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If your Scion xB is showing slipping, delayed engagement, or rough shifts, a proper transmission rebuild kit can return drivability and extend service life. Choosing the right kit matters because kits vary in included seals, gaskets, and internal components, and correct fitment is essential for a durable repair. This guide covers our top 5 shortlisted transmission rebuild kits for the Scion xB. We evaluated each option for component completeness, fit and compatibility, and overall potential for restoring reliable transmission function. Read on to see the selection criteria and what to check before you buy or install.
Looking for other parts? See all Scion xB parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Remco Complete Transmission Rebuild Kit for 4L60E/4L65E/4L70E |  |
| Best Quality Built to a higher standard if you want something more solid | Alto Deluxe Level 2 Transmission Rebuild Kit for Chevy 4L60E/4L65E/4L70E |  |
| Best Budget The cheapest option that still gets the job done reliably | Transparts Warehouse TH350 Master Transmission Rebuild Kit Level 2 |  |
| Most Sold A high-volume bestseller chosen again and again | Raybestos Transmission Deluxe Level 2 Rebuild Kit for Chevy 4L60E |  |
| Best Overall The best all-around choice for most situations | World Wide Parts Outlet 4L60E Transmission Rebuild Master Kit with 3-4 Power Pack |  |
1. Remco Complete Transmission Rebuild Kit for 4L60E/4L65E/4L70E
| Compatible transmissions | 4L60E, 4L65E, 4L70E |
|---|---|
| Manufacturer | Remco |
| Includes | Gaskets, seals, friction & steel plates, pistons, filter |
This Remco rebuild kit groups all the parts needed to refresh a 4L60E-series automatic transmission in one shipment so a technician can complete an overhaul without sourcing individual components. It is typically used during a tear-down and rebuild to replace worn clutch packs, seals, gaskets and valve body-related seals and to renew pistons and the transmission filter. The kit’s matched friction and steel plate sets and pre-sorted components speed assembly and help maintain correct stack-up and clearances during rebuild. For reliability-focused buyers the practical benefit is a single, factory-quality replacement package that addresses common wear points and reduces the chance of missing a critical part mid-job. Limitations to note are occasional reports of missing or defective plates in some batches, so inventorying the contents before assembly is essential, and a professional installation is recommended since correct fitment and clearances are vital to long-term durability. Confirm the transmission code and year for your Scion xB before ordering to ensure exact compatibility.
Best for: Reliability-focused owners who prioritize a thorough, professional rebuild over piecemeal repairs and want a single kit that addresses every common wear point on their Scion xB transmission.
Less Ideal for: Budget DIYers seeking a basic repair patch or anyone who cannot verify transmission code and production year for exact fitment should consider other options.
- Complete kit includes gaskets, seals, friction plates, steel plates, pistons and filter so you do not need separate orders
- Matched and pre-sorted components simplify assembly and reduce errors during rebuild
- Built to meet factory dimensional and material standards for reliable shifting under daily driving loads
- Covers all major wear points in the transmission to reduce the chance of repeat repairs
- Some buyers reported missing or defective clutch steels or friction plates in individual kits
- Not a plug-and-play fix for inexperienced DIYers because proper assembly and measurement are required
Verdict A convenient, reliability-focused complete rebuild kit for 4L60E-series transmissions that saves time but requires careful parts inspection and professional installation.
2. Alto Deluxe Level 2 Transmission Rebuild Kit for Chevy 4L60E/4L65E/4L70E
| Compatible transmissions | 4L60E, 4L65E, 4L70E |
|---|---|
| Kit level | Deluxe Level 2 |
| Includes | Clutches, pump kit, pistons, valve-body shift kit, seals and gaskets |
| Manufacturer | Alto Products |
This Alto Deluxe Level 2 rebuild kit packages the parts needed to perform a thorough overhaul of a 4L60-series automatic transmission. It includes friction and steel clutch packs, accumulator pistons, gaskets and seals, a 13-vane pump kit, a Corvette servo, a forward sprag, and a Transgo-style valve body shift kit so you can address worn friction surfaces, leaking seals, weak pumps, and common shift problems in one job. For a performance-oriented rebuild the inclusion of updated shift components and bonded pistons helps restore firmer, more consistent shifts and improves durability under load. Installers will typically use the kit when refreshing a tired transmission during an engine/transmission swap or performance upgrade; some adjustments and specialty tools are recommended for correct clutch stack clearance and accumulator setup. The kit is broad and high quality but does not replace the need for accurate measurements, torque procedures, or any vehicle-specific adaptions when fitting a Scion xB that uses the 4L60-series transmission, so expect to source any model-specific fasteners or calibration steps separately.
Best for: Performance-oriented DIYers or professional builders who prioritize restoring or improving shift quality and durability when fitting a 4L60-series transmission into a Scion xB.
Less Ideal for: Owners seeking a plug-and-play, do-it-without-tools solution or those unwilling to perform precise measurements and adjustments during a rebuild should consider professional installation or a more basic kit with fewer measured components.
- Complete parts coverage including friction and steel clutches plus pump and valve-body shift kit
- Updated components aimed at firmer, more consistent shifts under load
- Includes bonded pistons, seals, and gaskets to address common leakage and wear points
- Quality clutch packs manufactured in the USA and premium gasket kit included
- Does not include vehicle-specific fasteners or torque/calibration instructions for Scion xB installs
- Installer must measure and set clutch pack clearance and other specs; additional tools may be required
Verdict A high-quality, performance-focused rebuild kit that restores shift firmness and durability but requires correct measurement and professional-style assembly for a Scion xB using a 4L60-series transmission.
3. Transparts Warehouse TH350 Master Transmission Rebuild Kit Level 2
| Brand | Transparts Warehouse |
|---|---|
| Kit type | Master rebuild kit |
| Friction material | ALTO high energy green friction plates |
| Manufacturer part number | 44006HE_L2 |
This Transparts Warehouse Level 2 master rebuild kit supplies the common consumables needed to rebuild a TH350 automatic transmission. It bundles Alto high-energy friction plates and steel plates along with sealing rings, metal-clad seals, gaskets, o-rings, piston seals, a front band, filter, modulator, and basic bushings so a competent DIYer or independent shop can replace worn friction surfaces and seals in one go. The Alto clutches are treated for improved heat resistance, which helps in stop-and-go driving and moderate towing. Practical benefits include getting most replacement friction and sealing parts in a single purchase and avoiding the need to source many small items separately. Limitations are that the kit focuses on consumables and wear parts rather than precision-machined components or performance upgrades, so it will not correct internal bore wear, pump damage, or valve body faults; professional inspection is still advisable. Fitment and installation require transmission-specific knowledge and the right tooling for correct clearances and reassembly.
Best for: Budget-conscious DIYers or independent technicians who prioritize lower upfront cost and want a single kit that supplies common wear items for a TH350 transmission rebuild on a Scion xB.
Less Ideal for: Owners seeking a full factory-quality overhaul to correct internal wear or users wanting performance-strengthened components; those cases are better served by a machine shop or premium rebuild kit and replacement parts.
- Comprehensive set of friction plates, steels, seals, gaskets, and rings to cover most TH350 rebuild tasks.
- Alto high-energy friction clutches with silicate treatment for improved heat resistance under load.
- Includes filter, modulator, and common bushings so fewer separate parts are needed during a rebuild.
- Saves time sourcing multiple small components by bundling wear items in one kit.
- Does not include machined or dimensional components needed to repair worn bores, pump, or valve body problems.
- Not a performance rebuild kit; no heavy-duty or upgraded internal components are provided.
Verdict A cost-focused master rebuild kit that bundles the essential friction and sealing parts for a TH350 rebuild, suitable for budget-minded Scion xB repairs but not for correcting internal transmission wear.
4. Raybestos Transmission Deluxe Level 2 Rebuild Kit for Chevy 4L60E
| Manufacturer | Raybestos |
|---|---|
| Brand | Transparts Warehouse |
| Manufacturer Part Number | R74008EB_L2 (Deep) |
| ASIN | B07K81J8TF |
This Raybestos Deluxe Level 2 rebuild kit is a full-package transmission rebuild set intended for overhauls of the 4L60E family. It includes Raybestos friction plates and steels, bonded pistons, a deep pan filter, band, bushing and bearing kits, multiple valves, a 13-vane pump kit, Corvette-style servo and a 29-element forward sprag plus gaskets and seals. In practice the kit supplies the common wear items a professional shop would replace during a typical rebuild, so it speeds installation and reduces the need to source parts individually. The inclusion of premium clutches and a pump kit helps restore line pressure and clutch grip, while the piston and seal assortment addresses internal leaks. Limitations to note are that this kit targets the 4L60E family used in many GM vehicles and does not include step-by-step instructions for novice DIYers, and some specific steel plate types used on later model transmissions may differ from factory originals, so parts checking during assembly is advised. For a risk-averse buyer seeking a near-complete parts set for a standard 4L60E rebuild, this covers most bases.
Best for: A risk-averse mainstream buyer who wants a near-complete, factory-quality parts kit to simplify a professional or careful DIY rebuild of a standard 4L60E transmission.
Less Ideal for: Buyers looking for step-by-step guidance or a kit specifically tailored to uncommon or highly modified transmission variants should consider pairing this with professional support or a specialist kit.
- Comprehensive parts list covers clutches, pistons, seals, gaskets, filter, pump kit and servo for a full rebuild
- Raybestos friction components made in the USA for consistent wear characteristics
- Includes a 13-vane pump kit to help restore hydraulic pressure and improve shift quality
- Supplies many bearing, bushing and washer kits so common internal wear items are replaced
- Does not include installation instructions, which can challenge inexperienced DIYers
- Some steel plate types may differ from late-model factory designs and require verification during assembly
Verdict A near-complete Level 2 rebuild kit that supplies most factory-quality internal parts for a standard 4L60E transmission rebuild but expects a knowledgeable installer.
5. World Wide Parts Outlet 4L60E Transmission Rebuild Master Kit with 3-4 Power Pack
| Compatible transmission | 4L60E (1997–2003) |
|---|---|
| Includes | Alto HEG 3-4 Power Pack, gasket set, band, deep pan filter, bushing kit |
| Application note | For deep pan units only |
This master rebuild kit assembles Alto friction packs, a higher-capacity 3-4 Power Pack module, molded pistons, a red Eagle band, a deep pan filter, and a bushing set to replace worn parts during a transmission overhaul. It is intended for 4L60E transmissions and is configured for deep-pan applications; the 3-4 Power Pack raises clutch holding capacity by about 30 percent versus a stock stack but requires the 3-4 gap to be set to .025-.040 during installation. Typical use is a full teardown and rebuild where you want upgraded clutch durability without sourcing individual aftermarket pieces. Practical benefits include a near-complete parts set and an upgraded clutch pack for stronger holding under load. Limitations are the deep-pan filter requirement which excludes shallow-pan Scion xB variants without modification, and users have reported occasional fitment or small-part quality issues like mismatched bushings or oversized filters so careful fit-checking is advised before assembly.
Best for: Balanced owners who want a single, mostly complete kit that upgrades clutch durability during a 4L60E rebuild and prefer not to source components separately.
Less Ideal for: Buyers who need a shallow-pan specific kit for an unmodified Scion xB transmission or those who expect a plug-and-play filter and bushings without any fitment checks.
- Includes Alto HEG 3-4 Power Pack to increase clutch holding capacity about 30% over stock
- Comes with a full gasket set, molded pistons, band, deep-pan filter, and bushings for a near-complete rebuild
- Built as a custom configuration by the seller using known Alto components for compatibility within the 4L60E family
- Useful for deep-pan 4L60E conversions where stronger 3-4 engagement is desired
- Filter and some rubber parts are sized for deep-pan applications and may not fit Scion xB shallow-pan setups
- Some buyers report inconsistent bushing and O-ring hardness or occasional missing parts requiring vendor follow-up
Verdict A near-complete 4L60E rebuild kit that boosts 3-4 clutch capacity and suits balanced buyers rebuilding with a deep pan but requires fit checks for Scion xB shallow-pan setups.
Choosing the Right Scion xB Transmission Rebuild Kit: Key Factors to Consider
Component Completeness
A kit should include the collection of seals, gaskets, filters, and internal components necessary for the scope of the rebuild you intend. Missing items force additional purchases and can introduce delays or compatibility uncertainty.
Evaluate whether the kit covers consumables like sealing rings and gaskets plus any wear parts that commonly fail in the Scion xB transmission. Full kits reduce the risk of installing worn parts that cause early failure and simplify planning for required tools and replacement intervals.
Fitment and Vehicle Specificity
Accurate fitment information ensures the parts match the Scion xB transmission variant and avoid time-consuming trial and error. Transmissions can differ by model year, engine pairing, or market, so clear compatibility details matter.
Choose kits that list exact transmission codes or clear application notes. Kits designed specifically for the Scion xB reduce the chance of incorrect bolt patterns, mismatched sensors, or filler locations that complicate installation.
Seal and Gasket Quality
Seals and gaskets are critical to prevent leaks and maintain hydraulic pressure inside the transmission. Inferior materials can harden or swell and lead to persistent leaks or slipping.
Look for kits that specify durable elastomers and well-cut gaskets. Attention to material quality and proper sealing geometry is especially important in sections exposed to heat and friction, where long-term sealing performance affects reliability.
Included Wear Components
A rebuild is most effective when worn friction elements, bushings, and other wear-prone parts are replaced alongside seals. Kits that include these items reduce the chance of early rework and help restore proper valve body and clutch operation.
Determine which wear components are included and whether they align with common failure modes for the Scion xB transmission. Replacing these parts during the rebuild can improve shift quality and extend time between major services.
Instructions and Parts Documentation
Clear parts lists and installation guidance reduce installation errors and help you verify that the kit matches the job. Well-documented kits make it easier to identify missing items and to follow torque or sequencing notes during reassembly.
Prefer kits that provide exploded diagrams, itemized lists, or reference to service procedures. Good documentation is useful for both DIY mechanics and professional shops to ensure correct assembly and to speed troubleshooting if issues arise.
Durability and Materials
Materials used for bushings, seals, and friction components affect longevity and resistance to heat and contamination. Robust materials help the rebuilt transmission tolerate real-world driving conditions.
Assess whether the kit describes material upgrades or hardened parts where appropriate. Consider how component choices relate to expected service life, and whether the kit supports a durable repair versus a short-term fix.
FAQ
How do I know which Scion xB transmission rebuild kit fits my vehicle?
Check your vehicle identification and the transmission code on the case or service documentation. Kits that list specific transmission codes or model years make it easier to confirm fitment. When in doubt, match the kit part list and bolt patterns to the transmission you are servicing.
Does a rebuild kit include everything needed to overhaul the transmission?
Many kits include seals, gaskets, filters, and commonly replaced wear parts, but content varies. Some kits are comprehensive while others are partial. Review the included components list closely and plan to source any missing items before starting the job.
Should a DIYer attempt a transmission rebuild on a Scion xB?
A rebuild can be approached by experienced DIYers who have proper tools, a clean workspace, and familiarity with transmission assembly. The task requires precision and attention to sealing surfaces and torque specs. If you are unsure of the procedures, consider professional support to avoid costly rework.
How long does a transmission rebuild typically take with a complete kit?
With the right tools and a complete parts kit, a thorough rebuild usually takes multiple days, factoring disassembly, inspection, replacement of components, and careful reassembly. Time depends on your experience level and access to proper equipment, such as a lift and torque tools.
What are common signs that a rebuild kit should replace specific components?
Look for leaks, slipping under load, delayed engagement, metal debris in the fluid, or inconsistent shift quality. These symptoms often point to worn seals, gaskets, or friction components that a rebuild kit can address when combined with inspection and proper reassembly.
How We Chose the Best Scion xB Transmission Rebuild Kit
We focused on kits specifically intended for the Scion xB platform and prioritized options that include the core components needed for a comprehensive rebuild. Key evaluation criteria included component completeness, such as seals, gaskets, filters, and any friction or hardened parts; accuracy of fitment information for the Scion xB transmission model; material quality and expected durability of wear items; clarity of installation guidance or parts lists; and the balance between component coverage and likely longevity. We excluded kits that only offered partial coverage with minimal seals or single-item replacements, plus any listings that lacked clear vehicle fitment data. We did not include complete remanufactured transmissions or generic universal kits that require extensive modification. The final list emphasizes kits that provide the correct transmission rebuild components for the Scion xB and that make a full or near-full overhaul feasible without extensive supplementary purchases.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting a transmission rebuild kit for a Scion xB, prioritize complete kits with clear fitment information and high-quality seals and wear components. Component completeness and accurate vehicle specificity reduce the risk of installation errors and repeat repairs. Balance the scope of the kit against the condition of the transmission you are repairing. Good documentation, durable materials, and coverage of common wear items will help you achieve reliable shift quality and extend the time before the next major service.
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