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Replacing the timing belt on a Toyota Highlander is one of the most important maintenance tasks you can perform to protect the engine and avoid major failures. Choosing the right timing belt kit matters because kits vary in component quality, fitment accuracy, and included hardware, all of which affect longevity and ease of installation. This guide covers our shortlisted timing belt kits for the Highlander and explains the criteria used to evaluate them. Below you will find the top picks and what to look for when selecting a kit for your Highlander, followed by practical guidance on key factors and common questions.
Looking for other parts? See all Toyota Highlander parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Autodevil Timing Belt Kit with Water Pump for Toyota 3.0L/3.3L |  |
| Best Quality Built to a higher standard if you want something more solid | AISIN TKT-033 Timing Belt and Water Pump Service Kit |  |
| Best Budget The cheapest option that still gets the job done reliably | ATRACYPART Timing Belt Kit with Water Pump (fits select Toyota V6 3.0L/3.3L) |  |
| Most Sold A high-volume bestseller chosen again and again | A-Premium Timing Belt Kit with Water Pump for Toyota 3.4L V6 |  |
| Best Value for Money The sweet spot between price and what you get | Torchbeam Timing Belt Kit with Water Pump for Toyota Highlander and Compatible Toyota/Lexus 3.0–3.3L |  |
| Best Overall The best all-around choice for most situations | AISIN TKT-021 Timing Belt Kit with Water Pump |  |
1. Autodevil Timing Belt Kit with Water Pump for Toyota 3.0L/3.3L
| Fitment | Toyota 3.0L and 3.3L models listed (Camry, Highlander, Sienna, Solara, ES300/ES330, RX300/RX330) |
|---|---|
| Replaces part numbers | 13540-20030, 13568-09080, 13503-0A010, 13505-0A010, TBK257A, WPTO033, 470-5817 |
| Includes | Timing belt, water pump, tensioner, bearings, gaskets |
This Autodevil kit supplies a timing belt, water pump, tensioner, bearings, and gaskets packaged for direct replacement on Toyota 3.0L and 3.3L engines. It is used when performing a timing service or water pump replacement together—installing the kit refreshes wear items that affect valve timing and cooling. Notable features include claimed factory-spec fitment to OEM part numbers and an included water pump so you do not have to buy separate components. In practice the kit offers a straightforward install for experienced DIYers or shops and saves the time of sourcing individual parts. Some users report the belt lacks printed timing marks, so careful alignment with engine marks is required during installation. Build quality appears consistent with budget-brand kits: many buyers report good fit and function, while long-term durability will depend on installation care and operating conditions. If you want a full replacement bundle for a Toyota timing job and are comfortable verifying alignment marks, this kit is a practical, cost-conscious option; if you prefer pre-marked premium belts for easier alignment, consider alternatives.
Best for: Reliability-focused buyers who prefer replacing all wear items at once to minimize repeat labor and want a factory-fit replacement bundle for Toyota 3.0L/3.3L engines.
Less Ideal for: Buyers who want premium brand belts with pre-printed timing marks for easier alignment or those unwilling to verify timing alignment during installation.
- Complete kit includes timing belt, water pump, tensioner, bearings, and seals for a single service job
- Engineered to match listed factory part numbers for straightforward fitment
- Saves time by bundling all replacement components needed for a timing and water pump service
- Timing belt does not include printed alignment marks which requires manual timing reference during installation
- Quality reflects a budget-oriented brand so long-term durability is not proven in short-term use
Verdict A budget-friendly, full timing-service bundle built for Toyota 3.0L/3.3L engines that simplifies the job but requires careful timing alignment during installation.
2. AISIN TKT-033 Timing Belt and Water Pump Service Kit
| Brand | AISIN |
|---|---|
| Position | Front |
| Compatible Vehicles | Lexus RX400h (2006-2008), Toyota Highlander (2006-2010) — 3.3L 3MZ-FE hybrid |
This AISIN TKT-033 kit groups the timing belt and water pump replacement parts you usually change together, supplying a matching water pump, Mitsuboshi timing belt, Koyo idler and tensioner bearings, an NTN hydraulic tensioner, gasket, and installation instructions. It is intended for the 3.3L 3MZ-FE Highlander hybrid and Lexus RX400h engines and streamlines a labor-intensive service by providing factory-quality components from known Japanese suppliers. The water pump uses a diecast aluminum housing and carbon ceramic-style sealing for durability, and the included instructions and routing diagram reduce guesswork during installation. The practical benefit is fewer parts-sourcing headaches and confidence in component compatibility when doing a timing service. Limitations are that camshaft and crankshaft seals are not included and you must confirm exact engine fitment before ordering, so additional parts or minor ordering work may still be required.
Best for: Performance-oriented owners who prioritize factory-quality components and want a complete, brand-matched kit to minimize replacement risk during a timing belt and water pump service.
Less Ideal for: Buyers who need a fully comprehensive overhaul kit including cam and crank seals or those who are unsure of their exact engine variant should consider alternative kits or additional parts.
- Kit includes matched components from reputable Japanese suppliers for consistent fit and performance
- Combines timing belt and water pump replacements to save labor time when servicing
- Water pump features diecast aluminum housing and premium internal seals for long life
- Includes installation instructions and belt routing diagram to simplify correct installation
- Does not include crankshaft or camshaft seals which many technicians replace during timing service
- Fitment is engine-specific so buyers must verify it matches the 3.3L 3MZ-FE hybrid engine
Verdict A high-quality, manufacturer-matched timing belt and water pump kit that simplifies a labor-heavy service for Highlander hybrid and RX400h owners, but you may need to buy seals separately.
3. ATRACYPART Timing Belt Kit with Water Pump (fits select Toyota V6 3.0L/3.3L)
| Brand | ATRACYPART |
|---|---|
| Model | AP-SB15 |
| Compatibility | Select Toyota/Lexus 3.0L and 3.3L V6 engines |
| Package includes | Water pump, timing belt, tensioner, idler, cam seals, crank seal, pulleys |
This ATRACYPART timing belt kit bundles a replacement timing belt, water pump, tensioner, idler, cam and crank seals, and related pulleys intended to refresh the timing system on compatible 3.0L and 3.3L V6 Toyota engines. It is typically used when performing a scheduled timing service or repairing a leaking or noisy water pump to avoid catastrophic engine damage. The kit’s practical benefit is convenience: you get the belt plus common wear items in one package so a shop or competent DIYer can complete the job without sourcing individual parts. Several buyers report correct fit and satisfactory performance, while others found missing or incorrect components in some batches or concerns about tensioner longevity, so careful inspection at receipt and professional installation are advisable. The included 12-month warranty provides some protection if a part fails early, but mixed reviews on fitment and component quality mean higher-risk-averse owners should verify each part before installation or choose a factory-quality alternative.
Best for: Risk-averse mainstream buyers who prioritize completing a scheduled timing service with a single-purchase solution and prefer replacing all common wear parts at once to reduce return visits.
Less Ideal for: Owners seeking factory-brand parts or those unwilling to inspect components on arrival should consider OEM or dealer-sourced kits instead.
- Comprehensive kit includes timing belt, water pump, tensioner, idler, cam and crank seals and common pulleys.
- Saves time sourcing parts by supplying the typical components needed for a full timing service.
- Many buyers report straightforward fit and restored engine operation when correct for application.
- Includes a 12-month warranty for initial defects or early failures.
- Some buyers received incorrect or missing components leading to fitment issues.
- Reports exist of tensioner failures by a minority of users which can cause severe engine damage if not caught.
- Belt may be supplied without factory timing marks, requiring extra care during installation.
Verdict A convenient all-in-one timing service kit for Toyota 3.0L/3.3L V6 engines that can save sourcing time but requires inspection on arrival because fitment and component quality have been inconsistent.
4. A-Premium Timing Belt Kit with Water Pump for Toyota 3.4L V6
| Vehicle fitment | Toyota Tacoma 1999-2004, DOHC V6 3.4L |
|---|---|
| Kit contents | Timing belt, tensioner, idler, hydraulic tensioner, camshaft seals, crankshaft seal, water pump with gasket, belts, O-ring |
| Belt material | HNBR |
| Manufacturer part number | APTBK040PC |
This A-Premium kit bundles a timing belt, tensioners, idler, hydraulic tensioner, cam and crank seals, and a water pump with gasket to provide a full timing-system refresh for Toyota 3.4L V6 engines. For a Toyota Tacoma (1999–2004) the kit is intended to be used during a major service interval or when replacing a failing water pump to avoid repeat labor. The listing notes HNBR belt material for longer service life and includes multiple accessories so you can replace seals and tensioners at the same time. Practical benefits include having matching components in one package and a water pump sourced from the kit supplier so you do not need a separate part. Limitations to watch for are occasional reports of inconsistent tensioner and belt quality and the belt lacking factory timing marks, which means careful alignment or transfer of marks is required during installation. Some buyers reported fitment issues with secondary belts, so verify part fit for your specific Tacoma before installation.
Best for: Risk-averse mainstream buyers who prefer a single-package repair to minimize return trips and want a full-timing-service solution for a Toyota Tacoma 3.4L V6.
Less Ideal for: Do-it-yourselfers who want pre-marked belts or technicians who insist on OEM-sourced tensioners and pumps without aftermarket substitutions.
- Complete kit includes timing belt, hydraulic tensioner, idler, seals, and water pump so you replace all wear items at once.
- Timing belt specified as HNBR, which is marketed for longer life than standard CR belts.
- Includes water pump with gasket to eliminate the need for a separate pump purchase.
- Fits Toyota DOHC V6 3.4L engines for the listed Tacoma years, simplifying part selection for that engine.
- Some users reported premature failure of the hydraulic tensioner in the kit.
- Timing belt lacks molded timing marks, requiring mark transfer or careful alignment during install.
- Occasional reports of secondary belt fitment issues on some vehicles.
Verdict A convenient full-timing kit that includes a water pump and longer-life HNBR belt, useful for Tacoma 3.4L V6 owners who want a one-stop service solution but who should inspect tensioner quality and confirm belt alignment during installation.
5. Torchbeam Timing Belt Kit with Water Pump for Toyota Highlander and Compatible Toyota/Lexus 3.0–3.3L
| Vehicle Fitment | Toyota Highlander 2001-2007 (3.0–3.3L) and compatible Toyota/Lexus models listed |
|---|---|
| Belt Tooth Count | 211 teeth |
| Includes | Timing belt, hydraulic tensioner, idler/tensioner bearings, water pump with gasket, cam and crank seals |
| Manufacturer | Torchbeam |
This Torchbeam kit supplies everything needed when replacing the timing belt and water pump on compatible Toyota Highlander 3.0–3.3L engines. It is delivered as a full kit with a 211-tooth timing belt, hydraulic tensioner, idler/tensioner bearings, a replacement water pump with gasket, and cam/crankshaft seals so you can perform a comprehensive service in one job. The components are marketed as built to OEM-style specifications with heat-resistant guides and high-strength belt construction intended to reduce stretch and noise. For a DIYer or independent shop this simplifies parts sourcing and avoids multiple orders. Some buyers report consistent fit and dependable operation on daily-driven vehicles, while a few reviews mention missing small items in isolated shipments, so inspect the package immediately. The kit is pitched for long life with testing claims beyond 100,000 miles, but longevity depends on installation quality and proper coolant/system flushing when replacing the pump.
Best for: Practical optimizers who want a single purchase that lets them replace the timing belt and water pump in one service interval and minimize time spent sourcing parts.
Less Ideal for: If you prefer manufacturer-branded parts from the vehicle dealer or require an extended manufacturer-backed warranty, this aftermarket kit may not meet those priorities.
- Complete kit includes timing belt, hydraulic tensioner, idler bearings, water pump with gasket, and cam/crank seals for one-stop servicing
- Designed to match factory-style fit and form which helps reduce installation adjustments
- Belt and guides described as heat-resistant and high-strength to limit stretch and noise
- Targets long service life with testing claims past 100,000 miles
- Some customers reported missing small components in individual kits so parts should be verified before installation
- Claims about lifespan are manufacturer stated and real-world durability will vary with installation and maintenance
Verdict A convenient, factory-style complete timing belt and water pump kit aimed at shoppers who want good value and a one-stop repair for compatible Toyota Highlander engines.
6. AISIN TKT-021 Timing Belt Kit with Water Pump
| Brand | AISIN |
|---|---|
| Model | Timing Belt Kit with Water Pump |
| Automotive Fit Type | Vehicle Specific Fit |
| Material | Aluminum, Ceramic |
This AISIN timing belt kit packages everything needed for a full timing system service into a single box, simplifying a multi-hour job. It is designed as a vehicle-specific kit with factory-quality matched components including a water pump with a diecast aluminum housing and carbon ceramic seal, a Mitsuboshi/Toyo timing belt, tensioner, and pulleys. For a Highlander, using this kit means replacing the belt and the water pump together, which reduces the chance of early failure of a new belt and saves return labor. The inclusion of installation instructions and OEM-matched components helps achieve correct fit and belt tension without mixing brands. The main limitations are that some owners still buy a few ancillary items separately, such as thermostat or crank sensors, and installers should verify exact Highlander engine fitment before ordering because engine variants affect compatibility. This kit is best for owners who want factory-level replacement parts and fewer fitment surprises during a timing service on their Highlander.
Best for: A balanced all-round buyer who values factory-quality replacement parts and wants a single kit to cover a full timing belt and water pump service on a Highlander without mixing component brands.
Less Ideal for: Buyers who prefer the lowest possible upfront cost or who plan to replace only a single component rather than the entire timing system should consider alternatives.
- Complete kit that includes water pump, timing belt, tensioner, pulleys, gaskets, and seals for a single service event
- Factory-matched components from reputable Japanese suppliers for consistent fit and durability
- Water pump uses diecast aluminum housing and carbon ceramic seal for improved longevity
- Installation instructions included to aid correct assembly and timing alignment
- Does not include some ancillary parts that may be needed for a full cooling/timing service such as certain thermostat housings or sensors
Verdict A full, factory-matched timing belt and water pump kit that simplifies a Highlander timing service with OEM-style parts, but verify exact engine fitment and order any extra sensors or thermostat parts separately.
Choosing the Right Toyota Highlander Timing Belt Kit: Key Factors to Consider
Kit Completeness
A complete timing belt kit should include all components you will replace during service, not just the belt. Missing items like the tensioner or seals can lead to additional trips to the parts store and raise the risk of premature failure if worn components remain.
Choosing a full kit reduces the chance of incompatible parts and ensures the service is done once and correctly. It also helps maintain correct belt tension and prevents oil leaks that can degrade the new belt, preserving the life of the repair.
Component Quality and Materials
The materials used for the belt, idlers, and tensioner bearings directly affect longevity. Higher-grade rubber compounds and reinforced cords resist stretching and heat better, while sealed bearings and hardened shafts in tensioners and idlers reduce wear.
Poor-quality materials can fail sooner and may shed debris that damages the belt. Prioritize kits whose descriptions emphasize durable materials and robust bearing construction to improve long-term reliability.
Fitment Accuracy
Exact fitment to Highlander engine mounting points and pulleys matters for smooth operation. A kit that requires modifications or uses poorly fitting parts can cause misalignment, premature wear, or noisy operation.
Accurate fitment simplifies installation and reduces installation time. Look for kits with clear vehicle fitment notes and precise component dimensions to ensure parts align with the engine without force or alteration.
Included Hardware and Seals
Replacing seals, bolts, and tensioner hardware during the timing service is often overlooked but critical. Fresh seals prevent oil contamination of the new belt, and new mounting hardware ensures correct torque and clamping force.
Kits that include new cam and crank seals, proper fasteners, and any required shims reduce the risk of post-service leaks and the need to disassemble the front cover again. This attention to hardware extends the effective life of the repair.
Documentation and Installation Support
Clear instructions, torque specs, and installation notes are essential, especially if you plan a DIY job or are supervising a technician. Diagrams that show routing, timing marks, and tensioner settings reduce the risk of installation errors.
Kits that provide step-by-step guidance or reference OEM procedures help ensure correct timing tension and alignment. When documentation is lacking, factor in the potential extra time and effort to verify procedures from other sources.
Warranty and Parts Availability
A warranty indicates the manufacturer stands behind the kit components and can provide recourse if defects appear. Parts availability matters for future repairs or if you need to replace a single component later on.
Choose kits from suppliers with reasonable warranty terms and accessible replacement parts to avoid being forced into purchasing an entirely new kit for a single failed component. This can save time and reduce total ownership costs over the vehicle's life.
FAQ
How often should I replace the timing belt on a Toyota Highlander?
Replacement intervals vary by engine and model year, but many Highlander engines recommend service at multi-year intervals or specific mileage milestones. Check your vehicle’s maintenance schedule for the manufacturer’s suggested interval and consider inspection sooner if you notice oil leaks or belt wear.
Can I replace only the timing belt instead of the whole kit?
You can replace only the belt, but replacing the entire kit is usually recommended. Tensioners, idlers, and seals wear over time and can cause the new belt to fail prematurely if left unchanged. A complete kit reduces the risk of repeat labor and helps ensure long-term reliability.
What are signs that a timing belt or kit components are failing?
Common signs include unusual noises from the front of the engine such as whining or grinding, visible cracking or glazing on the belt, or oil leaks near timing cover seals. Some engines may exhibit rough running or misfires if timing is compromised. Any of these symptoms warrant inspection before catastrophic failure occurs.
Is it okay to use aftermarket timing belt kits on a Highlander?
Aftermarket kits often match OEM form and function and can be a suitable option when manufactured to proper standards. The important considerations are component quality, included parts, and documented fitment for the Highlander rather than the source label. Verify materials and included hardware before choosing an aftermarket option.
Do I need special tools to change a timing belt on a Highlander?
Replacing the timing belt typically requires basic hand tools plus a few specialty items such as camshaft locking tools, a torque wrench, and possibly a crankshaft holding tool depending on the engine. Proper tools help maintain timing accuracy and prevent damage during removal and installation.
How We Chose the Best Toyota Highlander Timing Belt Kit
We focused on kits that provide complete timing system service for the Toyota Highlander, emphasizing parts coverage, fitment precision, and durability. Key evaluation criteria included the completeness of included components such as belt, tensioner, idlers, and seals; the materials and build quality of moving parts; and how closely fitment matched factory mounting points and tolerances. We also assessed documentation and packaging for clarity during installation, the availability of replacement components, and whether the kit contained serviceable items that reduce future maintenance time. Exclusions included partial kits missing critical hardware, products that lack clear fitment information for the Highlander, and any options with unclear manufacturing traceability. The result is a curated list focused on reliability, proper fit, and practical serviceability for Highlander owners.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing a timing belt kit for a Toyota Highlander, prioritize completeness, component materials, and precise fitment to reduce the chance of follow-up repairs. New seals and proper hardware are small additions that greatly lower long-term risk. Balance the convenience of a full kit and clear installation guidance against warranty and parts support. Focusing on these factors helps you make a durable, serviceable selection that protects the engine and minimizes repeat labor.
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