Subaru Car Parts UK - Quality Used & Genuine Parts

How to Replace Subaru Headlights

Subaru headlight replacement is straightforward on most models thanks to the boxer engine's low profile providing excellent engine bay access. Whether replacing standard halogen units or upgrading to HID or LED headlights, this guide covers Outback, Forester, Impreza, WRX, Legacy, and Crosstrek models.

Step-by-Step Instructions:

1. Open the bonnet and secure it safely. Locate the rear of the headlight assembly from within the engine bay. Thanks to Subaru's horizontally-opposed boxer engine sitting low in the chassis, access to headlight mountings is excellent on all models. On Outback and Legacy models, the engine bay provides generous working space. Forester and Crosstrek benefit from higher bonnet lines giving clear overhead access. WRX and Impreza have straightforward access despite performance-oriented engine packaging. The boxer engine layout means headlights are easily accessible from above rather than requiring removal of other components.
2. Disconnect all electrical connectors. Subaru headlights typically have 2-4 electrical connectors depending on specification. These include main beam, dipped beam, side light, and on models with HID or LED headlights additional connectors for ballasts or control modules. Press the release tabs carefully and pull straight out to disconnect each connector. On WRX and STI models with high-intensity discharge headlights, handle ballast connectors carefully as they generate high voltage. Label connections if needed for easier reinstallation especially on models with multiple connector types.
3. Remove the headlight mounting bolts. Most Subaru models use 10mm bolts or Phillips screws to secure the headlight assembly. On Outback and Legacy, there are typically 3-4 mounting bolts along the top edge easily accessible once the bonnet is open. Forester and Crosstrek have similar bolt arrangement with excellent visibility from above. WRX and Impreza typically use 2-3 bolts with straightforward access. Some models may have additional lower mounting points requiring removal of undertray clips for access. Remove all mounting bolts completely and keep them organized for refitting with correct torque specifications.
4. Release any additional clips or retainers. Some Subaru headlights use supplementary plastic clips at various points for additional security. On Outback and Legacy models, check for clips at the inner corner near the grille. On Forester models, look for clips at the outer edge towards the wing. WRX and STI models may have additional clips securing performance-oriented headlight assemblies. Work carefully as plastic clips can become brittle with age especially on vehicles driven in harsh winter conditions with road salt exposure.
5. Carefully remove the headlight assembly. With all bolts and clips released, gently pull the headlight straight forward out of its mounting position. Subaru headlights typically slide forward on locating pins that ensure correct alignment for optimal beam pattern. Support the weight as you pull to prevent dropping the assembly which could crack the housing or damage mounting tabs. The boxer engine's low profile means you have excellent clearance for headlight removal without interference. If you feel resistance, stop immediately and check for missed fixings rather than forcing removal.
6. Transfer components to new headlight if needed. If your replacement doesn't include bulbs, ballasts for HID systems, or leveling motors, carefully transfer these from the old unit. When handling bulbs especially high-performance bulbs used in WRX and STI models, wear clean gloves to avoid touching glass surfaces with bare hands as skin oils cause premature failure and hot spots reducing bulb life. Check bulb condition and replace if worn or discoloured. Inspect ballast mounting points for cracks or damage before transferring.
7. Install the new headlight assembly. Reverse the removal process by aligning the new headlight with mounting pins and push firmly into place ensuring all locating pins engage correctly in their housings. The precision of Subaru manufacturing means headlights typically align perfectly without adjustment if pins are properly seated. Refit all mounting bolts and tighten securely to manufacturer specifications avoiding overtightening which can crack mounting points. Reconnect all electrical connections ensuring each clicks firmly into place. Test all lighting functions before final assembly including dipped beam, main beam, side lights, and indicators to confirm proper operation. Check headlight alignment after fitting using adjustment screws on the rear of the assembly for optimal visibility and MOT compliance.

Important Notes: Subaru headlight replacement benefits from excellent engine bay access thanks to the boxer engine layout. When handling new headlights, never touch lens or reflector surfaces as fingerprints affect light output and reduce visibility. HID headlights may require coding to the ECU to avoid warning lights on some newer models. Subaru's EyeSight safety system on newer models may require camera recalibration after headlight replacement if cameras are integrated into headlight assemblies consult specialist if warning lights appear after replacement.

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How to Replace Subaru Front Bumper

Replacing a Subaru front bumper is achievable in 45-90 minutes depending on model. This process covers Outback, Forester, Impreza, WRX, Legacy, and Crosstrek models, though specific screw locations vary between generations.

Step-by-Step Instructions:

1. Open the bonnet and secure it with the prop rod. Locate the upper bumper mounting fixings along the top edge just below the grille area. Most Subaru models have 4-8 screws or bolts securing the bumper along the top. On Outback and Legacy models, these are typically 10mm bolts or Phillips screws easily visible once bonnet is open. Forester and Crosstrek have similar fixings with excellent access from above. WRX and Impreza typically use Phillips screws with straightforward access. Remove all upper fixings systematically and keep organized as different generations may use different fastener types.
2. Access the wheel arch areas on both sides. Turn the steering wheel fully to one side to maximize access to the wheel arch liner. Behind each front wheel, locate the plastic arch liner securing clips and screws. Remove or release 3-5 plastic clips or screws securing the front section of the liner to expose side bumper mounting points. Subaru uses plastic push-in clips that release by pressing the center pin first before pulling the entire clip out. Some models use Phillips screws instead requiring screwdriver removal. Repeat on both driver and passenger sides. On WRX and STI models with performance-oriented bodywork, additional clips may be present.
3. Remove the side mounting screws from both wheel arches. Behind each wheel arch liner, you'll find 2-4 screws or bolts securing each side of the bumper to the wing. These are usually 10mm bolts or Phillips screws on Subaru models. Remove all side fixings on both driver and passenger sides completely. Keep track of which fixings came from which side as they may differ between left and right. WRX and STI models may have additional structural mounting points due to performance requirements and need special attention to ensure all fixings are removed.
4. Remove undertray screws and lower bumper fixings. Get underneath the vehicle safely using ramps or jack stands never work under a vehicle supported only by a jack. Locate and remove all screws and clips securing any engine undertray and the lower edge of the bumper. Subaru typically uses 8-12 fixings along the bottom edge. These may be Phillips screws, 10mm bolts, or plastic push-in clips depending on model year. You don't always need to remove the entire undertray just the front section for bumper access. On WRX and STI models, undertray may be more extensive due to aerodynamic requirements.
5. Disconnect fog lights, sensors, and electrical connections. Reach behind the bumper and disconnect all electrical connectors including fog lights if fitted typically one connector per side, parking sensor connections if equipped with EyeSight or parking assist systems usually 4 sensors across the bumper, and any additional connections for cameras on newer models with advanced safety systems or washer jets. Press release tabs carefully and pull straight out. Count connections as you disconnect to ensure you reconnect them all during refitting. Models with EyeSight may have additional camera connections requiring careful handling.
6. Release the bumper side clips and mounting tabs. Subaru bumpers are secured by plastic clips or metal brackets on each side that slot into the wing panels. With all visible fixings removed, firmly but gently pull the bumper forward from one corner while supporting the opposite side. You may need to wiggle slightly side-to-side to release the clips from their mounting points. Listen for clicks as clips disengage from wings. The precision of Subaru manufacturing means bumpers typically release cleanly once all fixings are removed without excessive force required.
7. Remove the bumper completely from the vehicle. With all fixings removed and clips released, carefully pull the bumper straight forward away from the vehicle supporting it evenly. Subaru bumpers are reasonably lightweight on Impreza and Legacy models but Outback, Forester, and Crosstrek bumpers are heavier due to size and benefit from a second person. WRX and STI bumpers may have additional weight from integrated cooling ducts and aerodynamic components. Place the removed bumper on a protected surface like cardboard or blankets to avoid scratching the painted surface.
8. Prepare and fit the replacement bumper assembly. Before installation, transfer any brackets, trim pieces, number plate mounting, fog light surrounds, or components from the old bumper if not fitted to your replacement part. On WRX and STI models, ensure all aerodynamic ducts and cooling channels are properly transferred as these are critical for engine bay airflow and intercooler cooling. Align the new bumper with mounting points and push firmly into place ensuring all side clips engage properly into the wing mounting points. Reconnect all electrical connections including fog lights, parking sensors, and EyeSight cameras ensuring each clicks firmly. Systematically secure with all screws, bolts, and clips in reverse order of removal. Test all electrical functions before final assembly including fog lights, parking sensors, and EyeSight functionality. Check panel gaps are even on both sides and adjust if needed before final tightening. On models with EyeSight, system recalibration at Subaru specialist may be required after bumper replacement.

Top Tips: Subaru bumpers are designed for practical replacement with straightforward access. When refitting parking sensors or EyeSight cameras, ensure each clicks firmly into its mounting hole and is correctly aligned flush with the bumper surface for proper operation. Models with EyeSight safety system may display warning lights after bumper replacement if cameras are misaligned recalibration by Subaru specialist resolves this. Check all panel gaps between bumper and wings are even before final tightening of all fixings. WRX and STI bumpers must have all cooling ducts properly aligned for optimal intercooler airflow and engine bay cooling.

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Common Subaru Parts Problems & Solutions

Subaru vehicles are renowned for exceptional reliability and engineering excellence. Consumer Reports named Subaru the 2025 Best Overall Automotive Brand and Most Reliable Brand, marking the first time since 2020 that neither Lexus nor Toyota claimed the top spot. Subaru achieved this through consistent reliability across its lineup with eight Consumer Reports recommended vehicles including Outback, Forester, Crosstrek, Ascent, Impreza, Legacy, BRZ, and WRX. RepairPal ranks Subaru 14th out of 32 car brands with 3.5 out of 5.0 rating, average annual repair costs of just £617 versus £652 industry average, only 0.3 shop visits per year versus 0.4 average, and 13% severe repairs versus 12% average. However, certain components particularly in older models can experience specific issues. Here are the most commonly reported Subaru parts problems based on verified data from UK owners, mechanics, and industry specialists.

Head Gasket Failures (1997-2011 EJ25 Engines) - Most Notorious Issue:

• Affected Engines and Years: The head gasket problem is the most well-known Subaru issue affecting specifically the 2.5-litre naturally aspirated EJ series engines from late 1990s to early 2010s. The affected engines are EJ25D, EJ251, and EJ253 engines. This problem is limited to normally aspirated engines and does NOT affect turbocharged 2.0L or 2.5L engines used in WRX and STI models, nor does it affect 1.6L, 1.8L, 2.0L, 2.2L engines, or the EG and EZ series 3.0L, 3.3L, or 3.6L engines. The problem affected mostly single overhead cam engines not dual overhead cam performance variants.
• Root Cause and Failure Pattern: Starting in 1997, Subaru began using multi-layer steel shim head gaskets with graphite-type outer film coating. The graphite coating deteriorates over time allowing coolant to enter the combustion chamber and exhaust gases to enter the cooling system. In mid-1998, Subaru redesigned the 2.5L engine cylinder heads and camshaft configurations but this design also had problems with external oil and coolant leaks. In both designs, gaskets typically start failing between 120,000 and 150,000 miles. The failure progresses in stages starting with external oil and coolant leaks visible as seepage around head gasket areas, then advancing to exhaust gases entering coolant along with engine overheating, and finally internal breach causing severe overheating and potential catastrophic engine damage.
• Symptoms and Detection: Early signs include oil or coolant seepage around cylinder head perimeter visible when engine is clean, sweet smell of coolant in engine bay especially after driving, gradual coolant loss requiring periodic top-ups with no visible external leaks, and white residue or crystallization around head gasket areas. Advanced symptoms include overheating particularly under load or in traffic, white smoke from exhaust indicating coolant burning in combustion chamber, bubbles in coolant reservoir when engine running showing exhaust gases entering cooling system, and milky oil on dipstick or oil filler cap indicating coolant contamination. Important note Subaru models have splash pan with fibrous pad that soaks up oil and coolant making external leaks difficult to detect without removing undertray for inspection.
• Repair Costs and Procedures: Head gasket replacement is labor-intensive due to boxer engine's horizontal layout. While you can replace head gaskets with engine in car, most shops remove the engine for better access to clean engine deck properly and achieve best possible seal with new gaskets. Luckily the four-cylinder boxer engine is relatively easy to remove. If repairing yourself expect minimum £1,000 including sending cylinder heads to machine shop for resurfacing, new multi-layer steel head gaskets and head bolts, new engine mounts, timing belt with idlers and tensioner, new water pump and thermostat, plus coolant and oil. Professional shop repairs range from £1,500 to £4,000 depending on whether engine is removed and what additional work is performed. Higher costs £3,500-£5,000 include engine removal, complete timing belt service, water pump replacement, and thorough inspection of all engine seals.
• Prevention and Long-Term Solution: Once you replace head gaskets with newer upgraded multi-layer steel design, the engine will be good for a long time making the repair usually worth the expense if rest of vehicle is in good condition. To prevent or delay head gasket issues, monitor coolant levels regularly and investigate any unexplained loss, address any signs of overheating immediately never drive with overheating engine, maintain cooling system by flushing coolant at recommended intervals Subaru recommends coolant change around 100,000 miles and adherence is critical, and consider preemptive replacement with upgraded gaskets during major engine repairs or timing belt service on high-mileage vehicles. Due to boxer engine design all particulate matter falls to bottom where it sits in contact with head gasket and coolant circulation can cause particles to scrub against gasket accelerating deterioration making coolant maintenance crucial.

Excessive Oil Consumption (2011-2015 Models):

• Affected Models and Extent: Some Subaru engines particularly FB series engines used in 2011-2015 model years have been known to experience excessive oil consumption due to piston ring wear or other internal engine issues. This problem affected Outback, Legacy, Crosstrek, and Impreza models from these years. Oil consumption rates of up to 1 quart per 1,000 miles were reported which owners considered excessive requiring frequent monitoring and top-ups between service intervals. The issue became so widespread that a Class Action lawsuit was successfully taken out against Subaru for fitting vehicles with faulty piston rings that caused them to burn too much oil.
• Causes and Symptoms: The excessive oil consumption was attributed to piston ring wear, valve stem seal degradation, and in some cases related to head gasket issues allowing oil into combustion chambers. Symptoms include low oil level warnings appearing between service intervals, blue smoke from exhaust especially on startup or acceleration, oil level dropping noticeably requiring regular top-ups, and in severe cases fouled spark plugs from oil contamination. Some owners reported low oil level light appearing after only 2,000 miles since service.
• Solutions and Warranty Coverage: Subaru dealers were forced to replace pistons and oil rings to bring this issue under control though this was found to be only temporary stop-gap measure in some cases. As part of Class Action settlement, Subaru extended warranty coverage for affected vehicles and performed repairs under warranty for qualifying owners. To minimize oil consumption issues, regularly check oil levels especially on 2011-2015 models checking weekly or before long journeys, use high-quality synthetic oil and adhere to recommended oil change intervals, monitor for any signs of oil leaks or burning including blue smoke, and address excessive consumption promptly before engine damage occurs. Anything over 1 quart per 1,000 miles is considered excessive and warrants investigation.

CVT Transmission Problems (2010+ Models):

• Lineartronic CVT Issues: Subaru introduced continuously variable transmissions around 2010 across its lineup and these transmissions have been source of concerns for some owners. CVT problems include hesitation during acceleration where transmission delays response to throttle inputs, shuddering particularly at low speeds or during gear ratio changes, overheating under heavy load or in hot weather especially when towing or climbing hills, and in severe cases complete transmission failure requiring expensive replacement. Some owners report CVT feeling less responsive than traditional automatic transmissions.
• Warranty Extension and Prevention: In 2018, Subaru announced warranty extension program for its Continuously Variable Transmissions including models like Crosstrek, Legacy, Forester, Impreza, WRX, and Outback. This extended the warranty from original 5 years or 60,000 miles to 10 years or 100,000 miles whichever comes first, demonstrating Subaru's recognition of potential issues and commitment to customer satisfaction. To prevent CVT transmission problems, ensure proper maintenance of transmission fluid despite Subaru claiming "lifetime" fluid CVT manufacturers recommend changes every 30,000-60,000 miles, follow recommended service intervals for fluid changes using genuine Subaru CVT fluid only, avoid aggressive driving habits including rapid acceleration and abrupt braking which accelerate wear on transmission components, avoid prolonged towing or hauling heavy loads which stress CVT beyond design limits, and have any hesitation or shuddering inspected early before minor issues become major failures. Regular CVT fluid changes significantly extend transmission life.

Timing Belt Failures (EJ Series Engines):

• Critical Maintenance Item: Subaru engines equipped with timing belts such as EJ series engines are susceptible to timing belt failures if not replaced at recommended intervals. A broken timing belt can cause catastrophic engine damage as valves collide with pistons requiring costly repairs or complete engine replacement. Timing belt failure is entirely preventable through proper maintenance adherence.
• Replacement Schedule: To prevent timing belt failures, adhere strictly to manufacturer's recommended maintenance schedule for timing belt replacement typically around 100,000 miles or every 7-10 years whichever comes first. Never delay this critical service as timing belt age and mileage both contribute to failure risk. When replacing timing belt, always replace tensioner, idler pulleys, and water pump simultaneously as labor is already invested in accessing these components and water pump failure shortly after timing belt service wastes significant money on duplicate labor. Regular inspections of timing belt and related components during service intervals can help identify any signs of wear or impending failure including cracks, fraying, or glazing on belt surface. Note newer Subaru engines with timing chains rather than belts do not require this periodic replacement.

Suspension Component Wear:

• Common Wear Items: Like any vehicle, Subarus are susceptible to wear and tear on suspension components such as struts, shocks, control arms, and bushings. Over time worn suspension components lead to decreased ride quality, handling issues, and potential safety concerns particularly given Subaru's focus on all-wheel drive capability and dynamic handling. Symptoms include clunking noises from suspension over bumps, excessive body roll in corners, uneven tire wear patterns, and decreased steering precision.
• Prevention and Maintenance: To prevent suspension problems, inspect suspension system regularly during routine maintenance intervals particularly on vehicles used for off-road driving or driven on poor road surfaces, replace worn components as needed to maintain optimal performance and safety, always replace suspension parts in pairs for balanced handling across both sides, and have wheel alignment checked and adjusted after suspension component replacement to prevent premature tire wear. Subaru's symmetrical all-wheel drive system benefits from properly maintained suspension to deliver optimal traction and handling characteristics.

Windshield Cracking (Forester, Crosstrek, Outback):

• Unusually Prone to Cracking: Some Subaru models particularly Forester, Crosstrek, and Outback have been reported to be more susceptible to windshield cracking than average. Cracks can develop from minor impacts or even temperature changes and spread quickly requiring expensive windshield replacement. The large windshield area on these SUV models combined with steeply raked angle may contribute to increased stress on glass.
• Prevention and Solutions: To minimize windshield cracking risk, avoid sudden temperature changes such as blasting defroster on frozen windshield, park in shaded areas to reduce heat-related expansion and contraction, address small chips immediately before they spread into full cracks using windshield repair services, consider using windshield protection film to add extra layer of durability, and check if your model qualifies for extended Subaru warranty claims. Maintain proper following distance to reduce rock chip impacts from vehicles ahead.

Subaru Reliability Assessment:

Outstanding Overall Reliability with Known Issues: Subaru's reliability is exceptional and industry-leading. Consumer Reports 2025 named Subaru Best Overall Automotive Brand and Most Reliable Brand marking first time since 2020 neither Lexus nor Toyota claimed top spot. This achievement stems from Subaru's consistent reliability across entire lineup with eight Consumer Reports recommended vehicles. The Crosstrek earned outstanding 4.5 out of 5.0 RepairPal rating ranking FIRST out of 26 compact SUVs with only £492 annual repair costs and just 0.1 shop visits per year making it exceptionally reliable. RepairPal ranks Subaru 14th out of 32 brands overall with 3.5/5.0 rating, annual repair costs of just £617 versus £652 industry average well below average, only 0.3 shop visits per year versus 0.4 average showing vehicles visit shop less frequently, and 13% severe repairs versus 12% average slightly above but nearly matching industry standard.

Head Gasket Legacy: The head gasket issue affecting 1997-2011 EJ25 naturally aspirated engines represents Subaru's most significant historical reliability concern. However this problem is now well-understood, entirely preventable through proper maintenance, and completely resolved through upgraded gasket replacement. Modern Subaru engines from 2012+ do not suffer from these issues. When buying used Subarus from affected years, verify head gasket replacement has been performed with upgraded multi-layer steel gaskets or factor repair cost into purchase price. Once addressed, these engines are exceptionally durable and reliable often exceeding 300,000 miles.

Prevention and Maintenance: To maximize Subaru reliability, adhere strictly to maintenance schedules particularly coolant changes every 100,000 miles, perform timing belt replacement on EJ series engines every 100,000 miles or 7-10 years never delay, change CVT fluid every 30,000-60,000 miles despite "lifetime" claims using only genuine Subaru CVT fluid, monitor oil levels regularly particularly on 2011-2015 models and address excessive consumption promptly, inspect suspension components regularly and replace worn parts, address any overheating issues immediately, and maintain cooling system properly. When buying used Subarus, verify full service history especially timing belt and head gasket work, inspect for oil or coolant leaks carefully checking undertray area, check CVT operation for any hesitation or shuddering, and have pre-purchase inspection performed by Subaru specialist. Despite known issues, Subaru remains one of most reliable brands available with exceptional longevity, outstanding all-weather capability, and loyal enthusiast following proving engineering excellence and durability.

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