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If you own a Subaru Forester, choosing the right timing belt kit matters for engine health and long-term reliability. A poorly specified kit can leave you with missing components or premature wear, while a complete, well-made kit reduces the risk of failure and simplifies repairs. This guide shortlists the top timing belt kits for the Forester and explains the criteria used to evaluate them, including component completeness and material durability. Read on to see the top picks and the key factors to check before you buy.
Looking for other parts? See all Subaru Forester parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Gates PowerGrip Premium Timing Belt Kit with Water Pump (TCKWP304) |  |
| Most Popular A crowd favorite that many people choose with confidence | ACDelco Gold TCK304 Timing Belt Kit with Tensioner and 3 Idler Pulleys |  |
| Best Quality Built to a higher standard if you want something more solid | IAG Performance Red Racing Timing Belt Kit with Billet Guide, Idlers & Tensioner for Subaru EJ Engines |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium Timing Belt Kit for Subaru Forester and compatible Subaru H4 engines |  |
| Most Sold A high-volume bestseller chosen again and again | Subaru Genuine Timing Belt Kit with Pulleys and Tensioner |  |
| Best Value for Money The sweet spot between price and what you get | JAVOUKA Head Gasket and Timing Belt Kit for Subaru 2.5L (EJ251/EJ253) |  |
| Best Overall The best all-around choice for most situations | AISIN Timing Belt Kit with Water Pump (TKF-004) |  |
1. Gates PowerGrip Premium Timing Belt Kit with Water Pump (TCKWP304)
| Brand | Gates |
|---|---|
| Automotive Fit Type | Vehicle Specific Fit |
| Model | PowerGrip Premium Timing Component Kit with Water Pump |
| Manufacturer Part Number | TCKWP304 |
This Gates PowerGrip timing belt kit supplies everything needed to service the timing system and the timing-driven water pump in one package. It is sold as a vehicle-specific fit and includes a premium timing belt, pulleys, tensioner components and a full-impeller water pump so you can replace all critical parts at once. In practice the kit is used during scheduled timing-belt intervals or when a leaking component forces an early job; replacing the water pump at the same time avoids a second teardown. Buyers report good fitment on Subaru SOHC engines, durable bearings, and straightforward installation for experienced DIYers or professional techs. A few users noted an occasional timing mark alignment discrepancy and one isolated pulley fitment issue that required minor adjustment, so careful verification of timing marks and component placement is recommended during install. This kit is best when you want a comprehensive, reliability-focused repair that minimizes future visits for the same failure area.
Best for: Reliability-focused buyers who prioritize doing the timing job correctly once and minimizing future failures by replacing all critical components during a single service.
Less Ideal for: Drivers who prefer minimal DIY involvement or those unwilling to verify fitment details during installation should consider professional installation or alternative solutions.
- Complete kit includes timing belt, pulleys, tensioner and water pump to replace the entire timing-driven cooling circuit at once
- Factory-style water pump with full impeller that matches original pump design for reliable coolant circulation
- Premium bearings and components noted by users for durability and long service life
- Vehicle-specific fit reduces parts mismatch and simplifies parts selection for compatible Subaru models
- Some installers reported timing mark alignment that required double-checking during fitment
- Rare reports of a pulley needing minor rework to avoid contact with the water pump housing
Verdict A comprehensive, vehicle-specific timing kit that prioritizes long-term reliability by replacing the belt and water pump together.
2. ACDelco Gold TCK304 Timing Belt Kit with Tensioner and 3 Idler Pulleys
| Item model number | TCK304 |
|---|---|
| Manufacturer | ACDelco |
| Manufacturer Part Number | 19185977 |
This ACDelco Gold timing belt kit supplies the main components needed when replacing a Subaru Forester timing belt: the belt itself plus a tensioner and three idler pulleys with supporting hardware and installation instructions. It is designed as a professional aftermarket replacement to match factory-quality performance and simplifies part sourcing by bundling the commonly replaced items in one package. In real-world use the kit saves time compared with buying parts separately and reduces the chance of missing a required item during a scheduled timing service. Some users report component origin and occasional fit issues, so confirm fitment for your Forester engine year and have a technician verify belt routing and tension during installation. For owners prioritizing convenience and a single-sourced solution, this kit makes the timing job straightforward, but expect a professional install to ensure correct timing alignment and longevity.
Best for: Convenience-driven owners who want a single-package timing belt solution to make a Forester timing service faster and easier while minimizing parts hunting.
Less Ideal for: Owners who prefer sourcing only manufacturer-specific OEM parts or who plan a DIY install without professional verification of fit and timing alignment should consider alternatives.
- Complete kit bundles timing belt, tensioner and three idler pulleys to cover a full timing service
- Marketed to meet factory-quality performance expectations for reliable operation
- Includes installation instructions to help guide professional or experienced DIY installers
- Simplifies parts sourcing for a single purchase instead of multiple components
- Some buyers have reported fitment inconsistencies so vehicle-year verification is necessary
- Certain components in the kit may be sourced from third-party manufacturers rather than domestic suppliers
Verdict A handy, all-in-one timing belt kit that streamlines a Subaru Forester timing service but verify fitment and use professional installation for best results.
3. IAG Performance Red Racing Timing Belt Kit with Billet Guide, Idlers & Tensioner for Subaru EJ Engines
| Compatible engines | EJ20 and EJ25 |
|---|---|
| Included components | Timing belt, billet guide, idler pulleys, tensioner, cog, small roller |
| Belt construction | Kevlar-reinforced with H-NBR tooth compound |
This IAG Performance timing belt kit supplies everything needed when replacing the timing belt on Subaru EJ engines, delivering a mix of race-proven upgrades and factory-quality hardware. The kit centers on IAG's red racing belt built with Kevlar-reinforced construction and H-NBR tooth compound for improved strength and heat resistance, which helps keep valve timing accurate under higher stress. It also includes OEM-spec idler pulleys and the factory-style tensioner to minimize failure risk, plus a CNC-machined 6061 billet aluminum timing belt guide that is adjustable for precise clearance. In everyday and spirited driving the stronger belt and solid guide reduce the chance of stretch or skip during elevated RPM or track use, while the OEM components lower the chance of premature bearing or tensioner problems. The main compromise is that this kit is targeted specifically at EJ-series Subarus, so buyers must confirm fitment for their Forester model year, and the upgraded belt and billet guide add cost over basic replacement kits. For a performance-focused Subaru owner wanting a durable, track-capable timing solution, this is a thoughtful, high-quality package.
Best for: Performance-oriented Subaru owners who prioritize durability and accurate valve timing under spirited driving or occasional track use and want a kit that combines reinforced belt materials with factory-quality moving parts.
Less Ideal for: Budget-focused drivers who only need a basic timing belt replacement for low-mileage, low-stress daily driving should consider simpler, lower-cost kits instead.
- Kevlar-reinforced red racing belt offers higher tensile strength and improved heat resistance versus standard belts
- Includes OEM-quality idler pulleys and timing belt tensioner to reduce risk of premature component failure
- CNC-machined 6061 billet aluminum timing belt guide is adjustable for precise belt clearance
- Complete kit contains all primary timing components needed for a belt service on EJ engines
- Fitment is limited to Subaru EJ20/EJ25 applications so it is not universal across all Forester engine generations
- Higher-spec belt and billet guide increase cost compared with basic replacement kits
Verdict A performance-focused, complete timing kit for Subaru EJ engines that pairs a much stronger Kevlar racing belt with OEM-style hardware and an adjustable billet guide for reliable high-stress use.
4. A-Premium Timing Belt Kit for Subaru Forester and compatible Subaru H4 engines
| Manufacturer Part Number | APTBK737 |
|---|---|
| Brand | A-Premium |
| Included parts | Timing belt, 2 idlers, idler sprocket, tensioner, 2 cam seals, crank seal |
| Vehicle fitment notes | Subaru Forester and other Subaru H4 2.2L/2.5L applications per listing |
This A-Premium timing belt kit is a budget-focused replacement package intended to refresh the timing drive on Subaru H4 engines used in Forester and similar models. The kit includes a timing belt, two idlers, an idler sprocket, a tensioner, two camshaft seals and a crankshaft seal so you can complete a standard timing belt service in one purchase. For DIYers or independent shops it simplifies parts sourcing and reduces the need to buy separate components. The description emphasizes correct engine timing, expected improvements in engine smoothness and fuel efficiency after installation, and a one-year unlimited-mileage guarantee. Expect basic, economy-grade components suitable for routine maintenance rather than extended high-performance use; longevity and fit depend on correct vehicle selection and installation. Buyers should verify exact vehicle fitment notes and VIN prompts before ordering to avoid mismatches. The kit is practical for scheduled timing service but not aimed at performance upgrades or heavy-duty applications.
Best for: Budget-conscious Subaru Forester owners who prioritize replacing all timing drive components at once to avoid repeat labor and keep routine maintenance costs low.
Less Ideal for: Drivers seeking a heavy-duty or performance-grade timing kit for high-mileage or modified engines should consider premium aftermarket options or OEM-level replacements instead.
- Complete kit includes belt, tensioner, idlers, idler sprocket and crank/cam seals for a single service job
- Designed to match factory timing system layout for Subaru H4 engines used in Forester models
- Simplifies parts sourcing for DIY or independent-shop timing belt replacement
- One-year unlimited-mileage guarantee provides short-term reassurance
- Manufacturer does not list component materials or detailed lifespan testing for heavy-duty reliability
- Fitment requires careful VIN/vehicle verification because several Subaru variants and accessory configurations differ
Verdict A cost-conscious, all-in-one timing belt kit that covers a Forester timing job affordably but is best for routine maintenance rather than performance or heavy-duty use.
5. Subaru Genuine Timing Belt Kit with Pulleys and Tensioner
| Brand | Subaru |
|---|---|
| Manufacturer Part Number | 13028AA240 13033AA042 13073AA142 |
| Fits | 2004-2014 WRX, 2002-2012 STI, 2005-2013 Outback/Legacy/Baja Turbo, 2002-2014 Impreza Turbo, 2004-2013 Forester Turbo |
This kit supplies factory-quality timing components intended for turbo Subaru engines and is sold as a sealed, genuine Subaru parts set. It includes the timing belt, multiple idler pulleys, a cogged idler, and the hydraulic/ mechanical tensioner so you replace all wear items during a timing service. Mechanics and savvy owners typically use this kit when performing a timing belt change to restore proper valve timing and avoid engine damage. The main benefit is parts consistency and fitment that match factory expectations, which reduces the chance of installation surprises. Some customers report reliable long-term service and correct fit without modification. Limitations to be aware of are fitment exceptions for early WRX years and at least one historical report of a missing pulley in some orders, so check contents on receipt and confirm exact model-year compatibility before starting the job.
Best for: Risk-averse mainstream owners who prioritize reliability and want factory-spec replacement parts to restore engine timing with minimal guesswork.
Less Ideal for: Owners who need a budget aftermarket option or who require universal/multi-vehicle aftermarket kits that cover non-turbo models or different model years.
- Genuine Subaru factory-quality components for correct fit and compatibility
- Comprehensive kit that includes belt, multiple idlers and tensioner for a full timing service
- Sealed OEM parts reduce uncertainty about part provenance
- Covers a wide range of turbo Subaru models so one kit fits many common service years
- Does not fit 2002–2003 WRX without different idler part number
- Some buyers reported a missing idler in isolated orders so contents verification is advisable
- Not a universal kit—must verify exact model-year fitment before installation
Verdict Choose this genuine Subaru kit if you want factory-match timing components for turbo Subaru models and peace of mind during a belt service.
6. JAVOUKA Head Gasket and Timing Belt Kit for Subaru 2.5L (EJ251/EJ253)
| Fitment | Subaru 2.5L EJ251/EJ253 (Forester 2007-2010; Impreza/Legacy/Outback years listed) |
|---|---|
| Package contents | Head gasket set, timing belt kit, head bolts, multiple seals (86 pieces listed in title) |
| Manufacturer | JAVOUKA |
| ASIN | B0CR1LGD2H |
This JAVOUKA kit bundles a full multilayer head gasket set, head bolts and a timing belt kit intended for Subaru 2.5L EJ251/EJ253 engines used in Forester models from the 2007–2010 era. It is supplied as a comprehensive repair kit so you can replace the head gasket and timing components in one job without chasing separate parts. The kit includes the timing belt, head bolts and multiple gaskets and seals, plus timing tools in the package images, which reduces the chance of missing items during a scheduled overhaul. Buyers report the gaskets fit well and the head bolts torque correctly when following factory procedures. Expect a value-oriented, serviceable solution that gets the mechanical job done, but be prepared to verify fitment for VIN-specific Outback variants and inspect individual gaskets before installation since aftermarket intake or exhaust gaskets can sometimes need minor adjustment. This is best used by experienced DIYers or technicians who will follow Subaru torque and timing specs during installation.
Best for: Practical optimizers who want a single, cost-effective kit to complete a head gasket and timing belt job on a Subaru 2.5L engine and prefer consolidating parts to reduce downtime and parts hunting.
Less Ideal for: If you demand dealer-sourced factory parts or are uncomfortable confirming VIN-specific compatibility, choose a factory-quality replacement or consult a dealer instead.
- Full kit approach lets you replace head gasket and timing belt components in one service event
- Includes head bolts and multiple gaskets so fewer trips to source missing parts
- Timing tools shown in product materials reduce the need for separate specialty tools
- Designed specifically for Subaru 2.5L EJ251/EJ253 engine fitment so parts align to known engine layout
- Aftermarket intake or exhaust gaskets may require slight trimming or persuasion to seat perfectly
- Fitment notes exclude certain VIN variants so you must confirm engine code and VIN before ordering
Verdict A budget-friendly, all-in-one head gasket and timing belt kit for Subaru 2.5L engines that simplifies a major service for buyers who verify VIN-specific fitment.
7. AISIN Timing Belt Kit with Water Pump (TKF-004)
| Brand | AISIN |
|---|---|
| Model | Timing Belt Kit with Water Pump |
| Compatible Vehicles | Select Subaru Forester (see fitment) |
This AISIN timing belt kit is designed as a one-box service solution for Subaru Forester owners doing a timing service. It includes a factory-quality water pump plus an OEM-matched timing belt, hydraulic tensioner, idler pulleys, gaskets, and installation instructions so you can replace all wear items at once instead of doing piecemeal repairs. In practice the kit saves time because the major labor steps are identical whether you change the belt or the pump, and the included parts are sourced from known suppliers (NTN, Mitsuboshi, Koyo) which matches factory fit and finish. The diecast aluminum water pump with carbon ceramic seal is a notable durability upgrade over budget pumps. Limitations: the kit does not include a thermostat or special tools such as a crank holding tool or feeler gauge for setting belt-to-guide clearance, so plan to buy those separately if needed; a few users have reported occasional belt quality variation. For Forester owners who want a near-OEM replacement kit and prefer replacing all timing components at once, this AISIN package is a practical, reliable choice.
Best for: Balanced all-round Forester owners who prioritize long-term reliability and prefer a single, well-matched kit to service the timing system and water pump together.
Less Ideal for: Buyers who want a bare-bones budget option or a kit that includes every small accessory and tool out of the box should consider alternatives or add the missing items separately.
- Complete kit includes water pump, timing belt, hydraulic tensioner, idler pulleys, gaskets, and instructions for a single service job.
- Uses OEM-matched suppliers (Mitsuboshi, NTN, Koyo) for parts and a diecast aluminum water pump with carbon ceramic seal for durability.
- Saves labor time by allowing simultaneous replacement of belt and pump instead of separate jobs, reducing long-term maintenance cost.
- Does not include a thermostat, so buyers must source that separately when servicing cooling components.
- No specialty installation tools or feeler gauge included, which may require purchasing or borrowing tools for proper setup.
- A small number of reviews report belt quality issues, so inspecting the belt before installation is prudent.
Verdict A near-factory-quality, complete timing service kit for Forester owners who want to replace the belt and pump in one reliable job.
Choosing the Right Subaru Forester Timing Belt Kit: Key Factors to Consider
Component Completeness
A timing belt kit should include every item you would normally replace during a timing service so you do not have to source missing parts later. Missing components can force repeat disassembly or leave worn items in place, which undermines the whole repair. Look for kits that include the main belt, tensioner, idler pulleys, seals, and any accessory components specified for the Forester engine layout. Complete kits reduce downtime and help ensure all wear points are addressed at once.
Belt and Tensioner Durability
The construction and materials of the belt and tensioner determine how long the system will perform under heat and load. Belts with reinforced cords and heat-resistant rubber compounds resist stretching and cracking. Tensioners and idlers with sealed bearings and corrosion-resistant surfaces maintain correct tension and reduce noise. Higher durability components extend service intervals and offer better protection against catastrophic engine damage.
Fitment and Compatibility
Correct fitment for the Subaru Forester engine is essential to avoid installation problems or incorrect clearances. Kits should list compatible engine codes or model years and provide clear instructions for orientation and torque specs. Poorly matched parts can lead to misalignment, abnormal wear, or failure during startup. Confirming fitment up front saves time and reduces risk during installation.
Included Hardware and Seals
Bolts, washers, and sealing components are often torque-critical and should be renewed during a timing service. Using reused or incorrect fasteners can affect mounting security and sealing around the water pump and cam covers. Kits that include OEM-grade or equivalent hardware and new cam or crank seals help ensure a proper, leak-free installation and reduce the chance of oil contamination that can degrade belt life.
Installation Support and Documentation
Good instructions, clear diagrams, and access to torque values or timing marks make a complex job far more predictable. Kits that include step-by-step guides or online resources reduce the likelihood of mistakes. For those doing the work themselves, clear documentation can shorten the job and help ensure correct tensioning and alignment. Professional installers also benefit from straightforward documentation that matches factory procedures.
Warranty and Manufacturer Support
A meaningful warranty and accessible support indicate confidence in component longevity and provide recourse if parts fail prematurely. Warranty terms can vary in coverage and duration, and support channels help resolve fitment or replacement questions. While warranties do not prevent failure, they reduce risk and signal that the manufacturer stands behind their product.
FAQ
How often should I replace a timing belt on a Subaru Forester?
Timing belt service intervals vary by engine and model year, but they are usually specified by the manufacturer in miles or years. It often depends on age, mileage, and driving conditions. Consult your vehicle maintenance schedule for the exact interval and consider replacing related components at the same time to avoid repeated labor.
Does a timing belt kit include the water pump?
Some timing belt kits include the water pump, while others do not. Including the water pump is common because it is accessible during the timing service and can prevent future labor to replace it. Verify the kit contents before purchasing so you know whether the pump is supplied or must be bought separately.
Can I replace the timing belt kit myself?
Many experienced DIYers can replace a timing belt kit with the right tools, space, and a clear procedure, but it is a technical job that requires careful timing and torque control. If you are unsure, professional installation reduces the risk of incorrect alignment, which can lead to serious engine damage.
What happens if a timing belt fails on a Forester?
Failure of the timing belt can cause the cam and crank to lose synchronization, which may result in valve damage or severe engine problems depending on the engine type. Because of the potential for extensive damage, timely replacement according to the recommended interval is an important preventative measure.
Are aftermarket timing belt kits reliable?
Aftermarket kits can be reliable when they use quality components and match factory specifications, but quality varies between manufacturers. Look for kits that specify materials, include sealed bearings and proper hardware, and offer clear fitment for the Forester. Warranties and documented testing add confidence.
How We Chose the Best Subaru Forester Timing Belt Kit
We focused on kits that provide full engine timing system coverage and clear fitment for Subaru Forester engines. Our selection process emphasized completeness of included parts, durability of belts and tensioners, compatibility with factory service procedures, and the availability of installation support such as clear instructions or diagrams. We considered component quality by looking for reinforced belt construction, sealed bearings in idlers and tensioners, and corrosion-resistant hardware. Compatibility with Forester engine layouts and ease of replacement were also important, since some kits require special tools or steps. We prioritized kits that include all routine replacement items to avoid additional trips to the parts store. We excluded partial kits that omit critical items like tensioners, water pumps, or idler pulleys, and we filtered out options lacking clear fitment guidance for Subaru Forester models. The resulting list highlights kits that balance component completeness, long-term durability, and installability.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing a timing belt kit for a Subaru Forester, prioritize kits that provide full component coverage, durable belts and tensioning hardware, and clear fitment information. Those factors reduce the chance of repeat work and help protect the engine from catastrophic failure. Balance durability, included hardware, and installation support when making your decision. Replacing related items at the same time typically offers the best long-term value and peace of mind.
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