Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If you drive an Acura TSX and are facing slipping, rough shifts, or fluid leaks, selecting the right transmission rebuild kit matters for reliability and drivability. The right kit supplies the parts you need to address common wear points and can reduce shop time if you are doing the work yourself or overseeing a rebuild. This guide covers the top shortlisted transmission rebuild kits for the Acura TSX and explains the most important criteria we used to evaluate them, including parts completeness and ease of installation. Read on to see which kits meet those standards and why they made the list.
Looking for other parts? See all Acura TSX parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Transnation Transmission Overhaul Seal and Gasket Kit for Honda (B134820C) |  |
| Best Quality Built to a higher standard if you want something more solid | Transnation B7XA CG1 Transmission Overhaul Seal and Gasket Kit |  |
| Best Budget The cheapest option that still gets the job done reliably | ClutchMaxPRO Heavy Duty Clutch Kit for 2009–2014 Acura TSX / 2003–2012 Honda Accord K24 |  |
| Highest Rated A top-rated pick with lots of positive feedback | FIWARY Auto Rebuild Master Kit CB7 for Honda/Acura Transmissions |  |
1. Transnation Transmission Overhaul Seal and Gasket Kit for Honda (B134820C)
| Manufacturer | Transnation |
|---|---|
| Model | MRVA MKYA GPLA RD5 RD7 MKZA GPPA MKYA GPLA Transmission |
| Manufacturer Part Number | B134820C |
| Item Weight | 1.76 pounds |
This overhaul kit supplies a broad set of seals and gaskets used when performing a transmission rebuild or reseal. Technicians would use it to replace worn or leaking seals, gaskets, and related soft parts during disassembly and reassembly of the gearbox. The listing emphasizes new, quality-controlled components and a manufacturer part reference for matching. In practical terms the kit simplifies service by grouping commonly replaced items so you avoid sourcing individual seals during a job. Because it is a soft-parts kit it does not include bearings, clutches, or hardened internal components, so a full refurbishment may require additional parts depending on wear. Also compatibility depends on matching the listed transmission model numbers to the vehicle, so confirm fitment for an Acura TSX transmission variant before purchasing. The kit's value is strongest for routine reseal jobs or as part of a broader rebuild where hard parts are replaced separately.
Best for: Balanced all-round buyers who want a single kit to handle the soft-part portion of an Acura TSX transmission service and prefer consolidated, factory-replacement style components.
Less Ideal for: People seeking a complete rebuild package that includes clutches, drums, or bearings or buyers who cannot confirm their TSX transmission code beforehand.
- Comprehensive set of seals and gaskets for a transmission overhaul
- Sold as brand-new, quality-controlled replacement parts
- Includes manufacturer part number to aid fitment verification
- Consolidates commonly replaced soft parts to streamline rebuild jobs
- Does not include internal hard parts like bearings, clutches, or gears which may be needed for complete rebuilds
- Fitment requires verification against specific transmission codes and may not cover every TSX variant
Verdict: A convenient, quality-controlled seal and gasket kit that simplifies the soft-part portion of an Acura TSX transmission overhaul.
2. Transnation B7XA CG1 Transmission Overhaul Seal and Gasket Kit
| Included Components | Gaskets, Oil Seals, Rings |
|---|---|
| Model | B7XA CG1 |
| Manufacturer | Transnation |
| Material Type | Plastic, Rubber, Steel |
This Transnation overhaul kit supplies the seals, gaskets, rings, and related small parts needed when rebuilding a B7XA CG1 automatic transmission commonly found in Honda and Acura vehicles. Technically it is used during a transmission rebuild or major service to replace worn sealing surfaces and restore hydraulic integrity. The kit advertises high-temperature resistant rubbers, anti-deforming sealing rings, thrust washers, and original-style gaskets to match factory interfaces, which helps reduce leaks and restore consistent line pressure when installed correctly. For a performance-oriented build on an Acura TSX, the kit provides the basic consumables needed to complement upgraded clutches or valvebody work without requiring custom fabrication. Limitations are typical of aftermarket rebuild kits: fit and tolerances depend on correct model matching and professional installation, and the listing does not include detailed torque specs, instructions, or a warranty for peace of mind.
Best for: Performance-focused owners and builders wanting a complete seal and gasket set to support a rebuilt or upgraded Acura TSX transmission and restore hydraulic reliability after clutch or valvebody modifications.
Less Ideal for: Drivers seeking a plug-and-play, guaranteed-sourced factory replacement with documented warranty or step-by-step guidance should consider factory-quality kits from established OEM suppliers or professional rebuild services instead.
- Includes a comprehensive set of seals, gaskets, rings and thrust washers for a full transmission overhaul
- Materials claim high temperature resistance and anti-deforming properties for improved durability
- Gaskets described as matching factory interfaces to simplify fitment during rebuilds
- No warranty is provided and the listing lacks detailed installation instructions
- Fitment depends on exact transmission model matching and may require verification with OEM codes
Verdict: Provides a full set of seals and gaskets to restore sealing and hydraulic function during a B7XA CG1 transmission rebuild for performance-focused Acura TSX builds.
3. ClutchMaxPRO Heavy Duty Clutch Kit for 2009–2014 Acura TSX / 2003–2012 Honda Accord K24
| Compatible engines | K24 2.4L |
|---|---|
| Clutch disc O.D. | 8-5/8" |
| Spline count | 24 spline |
| Kit contents | Pressure plate, clutch disc, release bearing, pilot bushing, alignment tool |
This ClutchMaxPRO kit supplies a full replacement clutch package intended for K24 2.4L Acura TSX and Honda Accord applications. It includes a heavy-duty pressure plate, a reduced-diameter clutch disc (8-5/8") with 24-spline hub, release bearing, pilot bushing, alignment tool, and installation guide so the whole clutch assembly can be replaced without reusing old parts. The vendor says the disc is slightly smaller than factory to reduce rotating mass, which can improve responsiveness and may aid longevity under moderate use. Practical benefits are that you get a ready-to-install kit with common service hardware and a clear fitment target, making it suitable for a DIY swap or a shop job. Important limitations are mixed user reports about durability and occasional fitment confusion, so careful verification of year and model before ordering and a competent installation are advisable. This is positioned as a budget-friendly alternative to higher-end OEM or performance kits rather than an upgrade for high-power builds.
Best for: Budget-conscious owners seeking a full, ready-to-install clutch replacement for K24 2.4L Acura TSX or Accord who prioritize upfront value over high-performance longevity.
Less Ideal for: Buyers looking for a high-capacity performance clutch for boosted or heavily modified engines should choose a purpose-built performance kit instead.
- Complete kit includes pressure plate, clutch disc, release bearing, pilot bushing, alignment tool and guide for one-stop replacement.
- Reduced-diameter disc lowers rotating mass which can improve throttle response and break-in behavior.
- Compatible specifically with K24 2.4L Acura TSX and Honda Accord applications, simplifying part selection when matched correctly.
- Includes installation hardware so shops or DIYers do not need to source additional components.
- Some customers report premature failures and inconsistent quality control across units.
- Disc diameter differs from factory which may require attention to pedal adjustment or installation details.
- Fitment mistakes reported when vehicle year/model not verified carefully.
Verdict: An affordable, complete clutch kit aimed at K24 Acura TSX and Accord owners who want a full replacement without sourcing extra parts.
4. FIWARY Auto Rebuild Master Kit CB7 for Honda/Acura Transmissions
| Manufacturer | FIWARY |
|---|---|
| Model | MPXA,CB7 Auto Rebuild Master Kit |
| Manufacturer Part Number | SZHFH-QMP-GN02440 |
This FIWARY Auto Rebuild Master Kit CB7 is a full transmission overhaul package that combines overhaul, friction, and steel kits with gaskets and seals to restore a worn transmission to near-new function. It is intended for use during a transmission rebuild or major service and is built to match factory specifications for the listed transmission codes, making installation straightforward for a technician who verifies fitment. Notable features include CNC-machined components, multi-layer anti-corrosion protection, and claimed high-cycle durability, which should help long-term reliability in a daily-driven TSX. The kit consolidates needed friction plates, steels, and sealing components so you do not have to source parts separately, reducing shop time. Important limitations are the need to confirm the exact transmission code before ordering and that claimed military-grade testing and failure rates are vendor statements rather than independent certifications, so buyers should still inspect parts and rely on professional fitment checks.
Best for: Reliability-focused buyers who want a single, factory-quality kit to restore an Acura TSX transmission and who prioritize long-term durability and fewer return trips to the shop.
Less Ideal for: Buyers who cannot confirm their transmission code or who prefer kits with independent lab certification or OEM-sourced parts should consider other options.
- Complete kit includes overhaul, friction, steel kits plus gaskets and seals for a single-source rebuild
- Designed as a direct factory-quality replacement for the listed transmission codes to simplify fitment
- CNC-machined components and anti-corrosion coating aimed at improved durability
- Claims high-cycle testing which suggests better longevity under regular driving conditions
- Compatibility depends on matching specific transmission codes so incorrect ordering is possible
- Durability and failure-rate claims are vendor-provided and not independently verified
Verdict: A one-stop rebuild kit aimed at restoring transmission function with factory-quality replacement parts to minimize parts sourcing and shop time.
Choosing the Right Acura TSX Transmission Rebuild Kit: Key Factors to Consider
Parts Completeness
A complete kit should include all wear items required for a typical rebuild, such as friction plates, steels, seals, gaskets, and any necessary bushings or bearings. Missing components can lead to additional ordering delays and unexpected extra work during a rebuild.
Completeness matters because it reduces the risk of disassembly revealing hidden wear that was not accounted for. When evaluating kits, check whether torque plates, snap rings, or alignment tools are included or noted as required. A kit that anticipates common failure points helps you plan labor and avoid multiple teardown cycles.
Seal and Gasket Quality
Seals and gaskets restore the transmission's ability to hold fluid and maintain hydraulic pressure, so material quality and dimensional accuracy are critical. Poorly made seals can leak quickly, undermining the rebuild and causing drivability problems.
Consider whether the kit includes all external and internal seals relevant to the Acura TSX transmission, such as input and output shaft seals and internal line seals. Also review the materials used for gaskets and whether they are coated or reinforced for longevity.
Friction Material and Steel Durability
Friction plates and drum steels directly affect shift quality and longevity. The composition and heat treatment of these parts determine how well they resist glazing, warping, and premature wear under load.
Look for kits that specify friction material type and any treatments applied to steels. Durable friction materials maintain consistent engagement and reduce the likelihood of slipping, while properly machined steels reduce vibration and uneven wear that can shorten service life.
Hydraulic and Valve Body Considerations
Many transmission issues stem from hydraulic control problems rather than purely mechanical wear. Kits that address valve body service, such as including bore bushings, valve seals, or accumulator parts, help restore proper pressure regulation and shift timing.
Assess whether the kit acknowledges valve body-related components or at least supplies the seals and gaskets needed if valve body work is planned. Proper hydraulic restoration improves shift firmness and prevents erratic behavior that might otherwise persist after replacing mechanical wear items.
Documentation and Ease of Installation
Clear instructions, labeled parts, and a comprehensive parts list reduce installation errors and shorten labor time. For DIYers, step-by-step guidance and torque specifications are particularly valuable; for professional shops, clear documentation speeds workflow.
Kits that include exploded diagrams, checklist-style packing lists, or references to service procedures help ensure all included items are used correctly. Good documentation also flags any additional parts or special tools required to complete the rebuild so you can plan ahead.
Compatibility and Fitment Specificity
A kit must match the specific transmission variant used in the Acura TSX model year you are working on. Fitment specificity avoids parts that are physically incompatible or that require additional machining or modification.
Confirm that part numbers or fitment notes align with your vehicle's transmission code and model year. Kits that clearly document fitment limits reduce the risk of mismatched plates, seals, or shafts and help ensure a straightforward installation.
How We Chose the Best Acura TSX Transmission Rebuild Kit
We selected kits that specifically target common failure modes in the Acura TSX transmission and prioritized components that restore proper hydraulic function and sealing. Key evaluation criteria included parts completeness, meaning whether the kit included friction plates, steels, seals, gaskets, and any required bushings or bearings; sealing integrity, focusing on the quality and range of seals and gaskets to address leaks; valve body and hydraulic considerations, such as whether the kit supplied components needed to restore pressure control; and documentation and installation support, including clear instructions and parts lists. We also considered the quality of included friction materials and steels, and whether torque-related hardware or alignment aids were provided when relevant.Kits were excluded if they lacked core sealing components, omitted common wear items, or were generic sets that did not reference fitment for the Acura TSX transmission family. We filtered out repair-only items that did not offer a complete rebuild scope and any kits that relied on buyers to source multiple critical parts separately. The result is a list of kits that provide a coherent, repair-oriented parts package and the installation information typically needed for a full transmission rebuild.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if my Acura TSX transmission needs a rebuild kit or just a repair?
Common signs that a rebuild kit is needed include repeated slipping, burnt-smelling fluid, loss of clutch engagement, or erratic shifting that service-level repairs do not fix. If issues persist after addressing fluid and simple external components, internal wear or hydraulic degradation often requires a rebuild kit. A diagnostic inspection of fluid condition, clutch pack thickness, and valve body function helps determine whether a full kit is warranted.
What parts should I expect to find in a typical transmission rebuild kit for an Acura TSX?
Typical kits usually include friction plates, steels, internal seals and gaskets, and sometimes bushings or bearings. More comprehensive kits may add valve seals, accumulator components, and small hardware needed during disassembly. The exact contents vary, so check the parts list to ensure the kit covers the wear items you plan to replace.
Can I install a transmission rebuild kit myself or should I use a professional?
Installation depends on your mechanical skill, tools, and the complexity of the job. Some owners with experience and proper tools can handle a rebuild, but transmission work often requires special tooling, precise measurements, and careful reassembly. If you are unsure about hydraulic adjustments or torque specs, a professional technician can reduce the risk of installation errors.
How important is fluid type and change interval after a rebuild?
Using the correct transmission fluid and following proper fill and break-in procedures are essential after a rebuild. The right fluid ensures proper hydraulic function and friction material compatibility. Follow manufacturer recommendations for fluid type and change intervals, and verify fluid level under operating conditions to prevent damage.
Will a rebuild kit fix leakage issues in the Acura TSX transmission?
A kit that includes all relevant seals and gaskets can address many common leaks, particularly those originating from degraded seals. However, leaks caused by housing cracks or damaged mating surfaces may need machining or additional repairs. Inspect the case and mating surfaces during disassembly to ensure sealing surfaces are sound before reassembly.
Conclusion
When choosing a transmission rebuild kit for an Acura TSX, prioritize completeness of parts, quality of seals and friction materials, and fitment specificity for your transmission variant. Balance hydraulic restoration needs with mechanical replacements to address the root causes of shifting problems.Expect some tradeoffs between a minimal seal-and-gasket set and a comprehensive overhaul kit; choose the level of coverage that matches the observed wear and planned scope of work. Good documentation and clear fitment notes will make installation smoother and help ensure a durable rebuild.
Explore More:
- Check out all Acura TSX parts & accessories
- Explore Transmission Rebuild Kits Maintenance & Repair Guides
- Explore Transmission & Drivetrain
- Browse all Auto Parts
