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A correct timing belt kit is critical to maintaining engine timing and avoiding costly damage. For Scion xD owners, choosing the right kit affects longevity, service ease, and whether you need extra parts at install. This guide lists the top shortlisted timing belt kits for the Scion xD, selected for completeness and fit accuracy. We also explain the key evaluation criteria used to vet these kits and what to expect during installation. Read on to see the top picks and the factors to consider when planning a timing belt replacement on a Scion xD.
Looking for other parts? See all Scion xD parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Gates PowerGrip Premium Timing Belt Component Kit with Water Pump |  |
| Most Popular A crowd favorite that many people choose with confidence | AISIN TKT-002 Timing Belt and Water Pump Service Kit |  |
| Best Quality Built to a higher standard if you want something more solid | AISIN TKH-002 Timing Belt Kit with Water Pump |  |
| Best Budget The cheapest option that still gets the job done reliably | Gates PowerGrip Premium Timing Belt Kit with Water Pump (TCKWP265A) |  |
| Most Sold A high-volume bestseller chosen again and again | Nakuuly Timing Belt Kit with Water Pump (TKT-025) |  |
| Best Value for Money The sweet spot between price and what you get | A-Premium Timing Belt Kit with Water Pump (fits select Honda/Acura 3.0–3.7L V6) |  |
| Best Overall The best all-around choice for most situations | AISIN TKT-026 Timing Belt Kit with Water Pump |  |
1. Gates PowerGrip Premium Timing Belt Component Kit with Water Pump
| Brand | Gates |
|---|---|
| Model | PowerGrip Premium Timing Belt Component Kit with Water Pump |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Part Number | TCKWP249 |
This Gates PowerGrip kit supplies everything needed to replace a timing belt and the belt-driven water pump in one service session. It is packaged as a full component kit so you get the timing belt with alignment marks, idler pulleys, tensioner(s) and a water pump plus the supporting hardware and instructions, which makes it suitable for a do-it-yourself overhaul or a shop job. For a reliability-focused repair the included water pump and hydraulic tensioners reduce the chance of a premature failure after installation, and the belt markings and installation instructions cut down alignment guesswork. Some buyers have reported occasional packaging damage to the gasket and a few have questioned appearance of certain parts, so inspect components on arrival before you start the job. Expect to spend the usual time and labor for a timing-belt service on a Scion xD; this kit removes the need to source individual parts and lowers the risk of rework by replacing all critical components at once.
Best for: A reliability-focused buyer who wants a one-box solution for a thorough timing-belt service and prefers replacing all related components together to minimize the chance of future failures.
Less Ideal for: Buyers who need OEM-sourced parts for dealership-level restorations or those who prefer buying individual components separately to inspect each brand before installation.
- Complete package includes belt, pulleys, tensioner(s), water pump and installation hardware so you can replace all critical components at once.
- Belt comes with timing marks and instructions that simplify correct alignment during installation.
- Hydraulic tensioners and a matched water pump reduce the likelihood of premature component failure after service.
- Some customers reported inadequate internal packaging that can crease or damage the water pump gasket.
- A few reviewers noted variability in perceived part finish quality compared with factory parts.
Verdict A convenient, reliability-minded full timing-belt kit that replaces the belt and water pump together to reduce the chance of follow-up failures.
2. AISIN TKT-002 Timing Belt and Water Pump Service Kit
| Brand | AISIN |
|---|---|
| Material | Aluminum, Ceramic |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer Part Number | TKT-002 |
This AISIN service kit packages a matched water pump, timing belt, pulleys, gaskets, and installation instructions so you can replace the timing system and pump in one visit. It is designed as a vehicle-specific kit that includes factory-quality components from known suppliers rather than generic parts, which simplifies sourcing when you want to do the job right without shopping for individual items. Technically the kit reduces repeat labor by letting you change the belt and pump at the same time, and the included instructions and torque values make it practical for a competent DIYer or a shop handling routine timing jobs. Reported issues in some batches include missing studs, tensioner springs, or variations in supplied pulley hardware, so double-check the box before you start. If you need every minor seal or a thermostat gasket included, you may still have to buy those separately. For Scion xD owners focused on convenience, the AISIN kit covers the core parts most shops and DIYers need to complete a timing belt and water pump service efficiently.
Best for: Convenience-driven buyers who want a single, ready-to-install kit to minimize parts sourcing and avoid repeat labor when servicing a Scion xD.
Less Ideal for: Buyers who need a fully exhaustive overhaul package that includes every minor seal, thermostat gasket, or specialty spring should look for a more comprehensive kit or purchase additional parts separately.
- Includes matched water pump and timing belt to replace both components in one service
- Contains pulleys, gaskets, and installation instructions for a single-box repair
- Uses reputable brand components commonly matched to factory specifications
- Diecast aluminum water pump housing and ceramic seals for durability
- Some reported kits have missing small hardware such as studs or tensioner spring
- Contents have varied between batches so you should verify all items before starting the job
Verdict A convenient, mostly complete timing belt and water pump kit that streamlines service for Scion xD owners but check the box for missing small parts before starting the job.
3. AISIN TKH-002 Timing Belt Kit with Water Pump
| Brand | AISIN |
|---|---|
| Material | Aluminum, Ceramic |
| Manufacturer | Aisin |
| Automotive Fit Type | Vehicle Specific Fit |
| Position | Center |
This AISIN TKH-002 kit packages the timing belt change and water pump replacement into a single box so you can do both jobs at once. It is intended for a timing-service overhaul: installers remove the old belt, replace the belt, tensioner, idler pulleys and water pump, fit the supplied gasket, then torque components to the vehicle-specific specs using the included instructions. Notable features are OEM-matched components from recognized suppliers and an Aisin diecast water pump with carbon ceramic seal for long life and reduced risk of coolant leaks. For someone focused on engine performance and longevity, the kit reduces downtime and avoids mixing part quality by supplying matched components. The main limitation is fitment: this kit is sold for specific Honda and Acura engines and must be verified for your vehicle application before purchase, and the job still requires mechanical skill and some specialty tools to remove the crank pulley and set timing correctly.
Best for: Performance-oriented buyers who prioritize factory-quality replacements and want matched components to protect engine timing and cooling systems during a service interval.
Less Ideal for: Casual DIYers without experience on interference engines or anyone who prefers paying a shop to handle timing belt and water pump replacement end-to-end.
- Complete kit includes water pump, timing belt, tensioner, idlers, gasket and installation instructions for a single-box service.
- OE-matched components from known suppliers provide factory-quality fit and finish comparable to factory replacement parts.
- Diecast aluminum water pump with carbon ceramic seal improves durability and lowers leak risk compared with generic pumps.
- Compatibility is vehicle- and engine-specific so you must confirm exact fitment before selecting this kit.
- Installation is a medium- to high-difficulty job that typically requires specialty tools and careful timing procedures.
Verdict Buy this kit if you want factory-quality, matched timing components and a durable water pump for a full timing-service job; skip it if you cannot confirm exact engine fitment or lack the tools and experience to install it correctly.
4. Gates PowerGrip Premium Timing Belt Kit with Water Pump (TCKWP265A)
| Brand | Gates |
|---|---|
| Model | PowerGrip Premium Timing Component Kit with Water Pump |
| Manufacturer Part Number | TCKWP265A |
| Position | Center |
This Gates PowerGrip timing belt kit combines the belt, idlers, tensioner, and water pump so you can replace the whole timing system in one job. For Scion xD owners doing a timing service, the kit simplifies routine maintenance by bundling the parts most commonly replaced together and avoiding multiple separate orders. Gates designs the kit components to match factory-fitment and reviewers report straightforward installation and good fit. The included water pump means you do not have to remove the assembly again if the pump fails later. Some parts in the kit are produced in different countries which may concern buyers focused on all-US manufacturing, and a few installers have noted minor clearance work may be required depending on the vehicle's timing cover and any prior modifications. The kit is aimed at budget-conscious owners who want a reliable, ready-to-install set of parts from an established supplier without buying expensive dealer components.
Best for: Practical, budget-conscious Scion xD owners who prioritize replacing the entire timing system at once to avoid repeat labor and want a reputable brand kit that balances cost and reliability.
Less Ideal for: Buyers who insist on every component being manufactured in the United States or who prefer to source individual premium parts separately for custom installs.
- Complete kit includes timing belt, pulleys, tensioner, and water pump to cover all critical timing components in one purchase.
- Components are designed for factory-quality fit and have a history of straightforward installation and compatibility with common engines.
- Bundling the water pump reduces risk of future labor duplication since timing-driven pumps should be replaced when the belt is serviced.
- Some components are manufactured in multiple countries which may worry buyers seeking single-origin parts.
- Occasional reports of needing minor timing cover clearance for upgraded tensioner on certain installations.
Verdict A cost-effective, full timing system kit for Scion xD owners who want a single, ready-to-install package that avoids repeat labor while sacrificing nothing essential in fitment.
5. Nakuuly Timing Belt Kit with Water Pump (TKT-025)
| Brand | Nakuuly |
|---|---|
| Material | Alloy Steel + Rubber |
| Automotive Fit Type | Vehicle Specific Fit |
| Position | Front |
This timing belt kit supplies the major components needed when replacing the timing system and water pump on compatible Toyota 3.4L 5VZFE engines. It is intended for a complete service and includes the timing belt, water pump, hydraulic tensioner, idler and tensioner rollers, crank and camshaft seals, thermostat and accessory belts so you can replace everything in one job. In practical use the kit simplifies parts sourcing and cuts service time compared with buying individual parts. Several customers report good fit and function when parts were inspected and swapped in, while other reports note occasional fitment issues with tensioner components, a fragile paper-style water pump gasket, or missing timing marks on the belt which require attention during installation. For a risk-averse buyer this kit offers strong value if you carefully verify each part on arrival and are prepared to address small fitment or gasket changes during installation.
Best for: Practical, risk-averse mainstream buyers who prefer a single complete kit to minimize trips for missing parts and want to keep repair time and complexity low.
Less Ideal for: Do not choose this kit if you expect perfectly factory-ready fitment without any inspection or minor adjustments, or if you require guaranteed factory-quality tensioner machining out of the box.
- Comprehensive kit includes belt, water pump, hydraulic tensioner, idler/tensioner pulleys, seals and thermostat for a single-job replacement.
- Saves time compared with sourcing many individual parts and helps ensure component compatibility in principle.
- Multiple reviews report correct packaging and generally OEM-like fit for many installs.
- Includes accessory belts so you can replace drive belts at the same service interval.
- Some users report tensioner machining or fitment problems that required rework or reusing the original tensioner arm.
- Belt in some units arrived without timing marks which complicates installation for less experienced mechanics.
- At least one user found the supplied water pump gasket to be thin paper rather than a more durable gasket material.
Verdict A cost-effective all-in-one timing belt and water pump kit that covers most service needs but benefits from careful inspection and minor adjustments during installation.
6. A-Premium Timing Belt Kit with Water Pump (fits select Honda/Acura 3.0–3.7L V6)
| Material | HNBR |
|---|---|
| Automotive Fit Type | Vehicle Specific Fit |
| Position | Front |
This A-Premium timing belt kit supplies everything needed for a full timing-belt service: timing belt, serpentine belt, water pump with gasket, tensioner, idler pulleys, hydraulic tensioner and main seals. In practice the kit is used during a scheduled timing belt job where replacing the water pump and tensioning components at the same time reduces future labor. The belt is made from HNBR, which the seller highlights for heat and wear resistance, and customers frequently report straightforward fit and quiet operation after installation. The convenience of bundled parts and a matching water pump simplifies sourcing and can shave hours compared with ordering components separately. Limitations to note are that the kit is a vehicle-specific aftermarket replacement rather than a factory part and some users reported occasional early water-pump leaks in isolated cases, so careful pre-install inspection and proper torqueing are important. Also fitment must be checked against your vehicle before purchase because this kit targets specific engines and years.
Best for: Practical optimizers who prioritize getting a full, ready-to-install service kit that reduces repeat labor and parts hunting when doing a timing-belt job.
Less Ideal for: Buyers seeking guaranteed factory-original parts or those unwilling to inspect aftermarket components before installation should consider alternatives.
- Complete kit includes timing belt, serpentine belt, water pump, tensioner and seals for one-stop servicing
- HNBR timing belt material claims improved heat, chemical and wear resistance compared with generic rubber belts
- Multiple pulleys and hydraulic tensioner included reduce the need to source extra parts
- Customers report good fitment and quieter engine operation after installation
- Not a factory part so component fit and long-term durability can vary compared with OEM replacements
- A small number of users reported water pump leakage requiring attention after installation
Verdict A budget-friendly, full timing-belt service kit that streamlines a complete repair but requires inspection since it is an aftermarket replacement.
7. AISIN TKT-026 Timing Belt Kit with Water Pump
| Brand | AISIN |
|---|---|
| Material | Aluminum, Ceramic |
| Automotive Fit Type | Vehicle Specific Fit |
| Model | Timing Belt Kit with Water Pump |
This AISIN timing belt kit combines all the parts needed for a timed-drive system service: timing belt, water pump, tensioner, pulleys, gasket, and installation instructions in one box. It is intended for vehicle-specific replacement and includes factory-quality matched components from reputable suppliers, so installers get parts that fit and operate like the original equipment. The water pump uses a diecast aluminum housing and carbon ceramic seals for durability, and the kit is convenient for swapping both belt and pump in the same job to avoid duplicate labor. Typical use is a full timing service during scheduled maintenance or when replacing a failing pump or belt. Buyers should note the kit is vehicle-specific so fitment must be verified for the Scion xD application; some buyers reported missing small items on rare occasions, so check the box before starting work. For DIY mechanics and independent shops the kit saves sourcing time and reduces the risk of mismatched parts, while buyers seeking the absolute cheapest aftermarket option may find lower-cost alternatives elsewhere.
Best for: Balanced all-round buyers who value reliability and convenience when servicing the timing system and want a single, factory-quality kit that reduces the chances of parts mismatch.
Less Ideal for: Buyers who prioritize the lowest possible upfront cost or who need a generic universal kit for multiple different vehicles across a fleet.
- Complete kit includes timing belt, water pump, tensioner, pulleys, gasket and instructions so you can do the full service in one job.
- Factory-quality matched components from known suppliers to reduce fitment and compatibility issues.
- Durable water pump design with diecast aluminum housing and carbon ceramic seal for longer life.
- Saves time compared with sourcing individual parts and simplifies DIY or shop installs.
- Kit is vehicle-specific so incorrect engine/fitment selection will lead to incompatibility.
- Occasional reports of missing small components, so inventory the contents before starting the repair.
Verdict A comprehensive, factory-quality timing belt and water pump kit that streamlines a full timing service for buyers who want reliable, matched components.
Choosing the Right Scion xD Timing Belt Kit: Key Factors to Consider
Kit Completeness
A complete timing belt kit should include the timing belt plus all wear items that are typically replaced at the same service interval, such as the tensioner, idler pulleys, and seals. When the kit includes a water pump, it reduces the chance of contaminating a new belt with coolant and avoids a second labor cycle.
Incomplete kits often look cheaper but can lead to extra parts purchases and repeated labor. Confirm what is included so you can estimate the full scope of work and determine whether you need additional gaskets or fasteners before starting the job.
Fitment and Vehicle Specificity
Accurate fitment information specific to the Scion xD is vital. Kits designed for the exact engine code and model year minimize the risk of incorrect pulley sizes or mismatched belt lengths. Check the listed compatible engine variants and model years to ensure the belt geometry and tensioner orientation match your vehicle.
Ambiguous fitment details increase the likelihood of returns and installation delays. When fitment documentation is clear, you can proceed with confidence that the components will align with factory mounting points and belt routing.
Component Quality and Materials
The construction of the belt, bearings in idlers and tensioners, and the housing materials influence longevity and noise. Belts made from reinforced rubber compounds and pulleys with sealed bearings usually last longer and run quieter. Metal housings and corrosion-resistant surfaces help in climates with road salt or high humidity.
Inferior materials may show early cracking, glazing, or bearing failure. Look for information on material specifications, bearing seals, and any manufacturer claims about expected service life or testing standards.
Installation Documentation and Support
Clear instructions, torque values, and timing marks included with the kit make installation more predictable and reduce the chance of errors. Detailed documentation helps whether you are a competent DIYer or supervising a technician. Support channels such as customer service lines or online resources can be useful if an uncommon issue arises during assembly.
Kits that include diagrams and specific steps tailored to the Scion xD will save time and reduce risk. Lacking documentation can increase labor time and the probability of incorrect tensioning or misalignment.
Compatibility with Water Pump and Ancillary Parts
Since many timing belt services coincide with water pump replacement, consider whether the kit covers the pump or, alternatively, whether the pump model is known to be compatible. Also verify related items like camshaft or crankshaft seals, accessory belts, and tensioner bolts. Coordinating all related components avoids early rework and ensures the fresh belt is not compromised by a failing water pump.
If the kit does not include the water pump, plan to source a compatible pump and seals with matching life expectancy to the new belt to maintain overall system reliability.
Service Interval Guidance and Maintenance Planning
Knowing the recommended service interval for timing belt replacement helps you plan the job and budget for associated parts. Manufacturer or industry guidance on mileage or years between changes should inform whether you replace just the belt or the whole kit. Proper interval planning also allows you to address correlated maintenance tasks like coolant changes or valve cover inspections while the engine is open.
Failing to follow interval guidance increases the risk of belt deterioration and catastrophic engine damage. Consider both time and mileage, and account for environmental factors like frequent short trips or severe climates that may warrant earlier replacement.
FAQ
How often should I replace the timing belt on a Scion xD?
Replacement intervals often depend on both mileage and age. Many manufacturers recommend changing the timing belt between set mileage and years, so check your vehicle’s maintenance schedule and consider earlier replacement if the belt shows visible wear or you drive in severe conditions.
Can I replace just the timing belt and keep the old tensioner?
It is usually advisable to replace the tensioner and idler pulleys when you replace the timing belt. These parts wear alongside the belt, and reusing them can risk premature failure, added labor, and potential engine damage if a bearing or the tensioning mechanism fails.
Should I replace the water pump when doing a timing belt service?
Replacing the water pump at the same time is commonly recommended because the pump is often driven by the same belt and is accessible during the job. Replacing both at once prevents the need to remove the new belt if the pump later leaks or fails.
What if a kit’s fitment information is unclear for my model year?
If fitment details are ambiguous, seek clarification from the seller or manufacturer documentation before purchasing. You can also compare part numbers or consult a repair manual to verify dimensions. Avoid proceeding without confirmation to prevent installation delays.
Are OEM kits necessary, or are aftermarket kits acceptable?
Both OEM and reputable aftermarket kits can be suitable. The key is that the kit offers correct fitment, quality components, and clear documentation. Evaluate material specifications and included parts rather than relying solely on OEM versus aftermarket labeling.
How We Chose the Best Scion xD Timing Belt Kit
Our editorial process focused on attributes that matter specifically for timing belt kits for the Scion xD. We prioritized complete kits that include the belt, tensioner, idlers, and water pump where applicable, because missing parts often lead to multiple trips to the parts store. Fitment accuracy and model-specific compatibility were essential to reduce installation errors. Durability of materials and manufacturer-specified service life guided our assessment of long-term value. We also examined documentation quality, including clear instructions and torque specifications, to help ensure correct installation. We excluded kits that lacked essential components, had vague fitment information, or used unspecified third-party parts with no material details. We did not consider pricing as a primary filter, but kits that omitted core items were removed from contention. The final shortlist balances component completeness, documented fitment for the Scion xD, material durability, and installation support.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right timing belt kit for a Scion xD means prioritizing completeness, correct fitment, and durable components. Focus on kits that include tensioners, idlers, and any commonly replaced seals or the water pump to minimize the chance of repeat labor. Balance material quality and installation support when planning the service, and align the replacement with recommended service intervals and maintenance items. That approach reduces risk and keeps engine timing reliable for the long term.
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