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If your Mercedes-Benz ML-Class is showing slipping, harsh shifts, or fluid leaks, choosing the right transmission rebuild kit can get drivability back on track. The right kit replaces worn internal components and seals in a way that matches the vehicle's original specifications, reducing the chance of repeat issues and helping the transmission last longer.This guide covers seven shortlisted kits that meet core fit and coverage requirements. We evaluated each option for component completeness, seal and gasket quality, and compatibility with ML-Class transmission specifications. Read on to see the practical factors that matter when selecting a kit for your vehicle and which aspects to prioritize before starting the rebuild.
Looking for other parts? See all Mercedes-Benz ML-Class parts & accessories.
Top Picks at a Glance
| Best Quality Built to a higher standard if you want something more solid | GENERIC 722.9 Transmission Rebuild Kit with Clutch Plates |  |
| Best Value The sweet spot between price and what you get | 720-S Transmission Master Rebuild Kit for Mercedes 722.9 (T18900A) |  |
| Best Budget The cheapest option that still gets the job done reliably | Yeedaky Master Overhaul Rebuild Kit for Mercedes-Benz 722.6 5-Speed Transmission |  |
| Highest Rated A top-rated pick with lots of positive feedback | Transmission Master Rebuild Kit W5A580 for Mercedes T14100B |  |
| Most Popular A crowd favorite that many people choose with confidence | Solarhome Transmission Master Rebuild Kit for Mercedes T14100B |  |
| Best Seller A high-volume bestseller chosen again and again | TRANSPEED 722.4 Transmission Master Rebuild Kit for Mercedes-Benz |  |
1. GENERIC 722.9 Transmission Rebuild Kit with Clutch Plates
| Model | Transmission Rebuild Kit |
|---|---|
| Item model number | 722.9 |
| Manufacturer | GENERIC |
| Application | Fits specified MercedesBenz 722.9 models |
This rebuild kit supplies the clutch plates and associated replacement components needed to overhaul a Mercedes‑Benz 722.9 automatic transmission. It is designed for use during a full transmission rebuild or when clutch slipping, harsh shifts, or costly internal wear are diagnosed. The kit lists fitment across many Mercedes models from mid 2000s to 2010 and includes multiple part numbers to match common 722.9 service needs. For a performance‑oriented buyer, the practical benefit is restoring shift firmness and reducing slip without having to source individual plates, which saves time in the shop. Important limitations are that this is a parts kit only and does not include labor, seals, or gaskets beyond what is explicitly listed, so additional components or machining may be required for a complete rebuild. Buyers should verify the exact 722.9 submodel and matching part numbers before ordering to ensure proper fit and function.
Best for: Performance-oriented owners and independent shops seeking a quality parts package to restore shift feel and reduce slipping in Mercedes 722.9 transmissions during a rebuild.
Less Ideal for: Casual DIYers wanting a complete drop‑in solution with all seals, valve body work, or torque converter replacement should consider a more comprehensive kit or professional rebuild service instead.
- Made to replace clutch plates and core components for 722.9 transmissions, allowing a full clutch pack refresh
- Covers a wide range of Mercedes 722.9 applications from mid 2000s to 2010, reducing the need to source multiple kits
- Includes multiple part numbers referenced for compatibility with common service procedures
- Polished exterior finish may simplify visual inspection during installation
- Kit description does not list every included seal or gasket so additional parts may be needed for a complete rebuild
- No torque converters, valve body components, or labor included so further parts or machining could be required
Verdict: A targeted clutch plate rebuild kit for Mercedes 722.9 transmissions that helps performance buyers restore shift firmness without sourcing individual parts.
2. 720-S Transmission Master Rebuild Kit for Mercedes 722.9 (T18900A)
| Manufacturer | 720-S |
|---|---|
| Manufacturer Part Number | 722.9 |
| OEM Part Number | T18900A (T18902A+T189080A+T189081A) |
| Condition | NEW |
| Compatible With | MERCEDES Transpeed |
This master rebuild kit supplies the common internal components needed to overhaul a Mercedes 722.9 automatic transmission and is marketed as a full set compatible with Transpeed units. Typical use is a transmission bench rebuild or a shop-level overhaul where the technician replaces worn clutch packs, seals, and other internal parts included in the kit. The listing highlights OEM part numbers and a bundled package shown in images, plus manufacturer support and a warranty period. Practical benefits include having a consolidated parts set that can speed up rebuilds and reduce sourcing multiple individual components. Limitations to be aware of are that fitment should be double-checked using the vehicle VIN and transmission model before purchase, and the kit does not include labor, machining, or electronic components that might be needed depending on transmission condition. Buyers should plan on verifying exact compatibility and following installation guidance or videos during the rebuild.
Best for: Practical optimizers who want a single, budget-focused parts package to reduce returns to suppliers and simplify a DIY or small-shop rebuild of a Mercedes 722.9 transmission.
Less Ideal for: Shops or owners who need factory-quality remanufactured cores, electronic control components, or a plug-and-play reman service should consider alternative remanufactured assemblies.
- Complete parts bundle intended to cover common wear items for a 722.9 rebuild
- Lists matching OEM part numbers for easier fitment verification
- Offers manufacturer support with response within 24 hours
- Includes a limited warranty period for buyer protection
- Requires VIN confirmation to ensure correct fitment for a specific vehicle
- Does not cover machining, valve body calibration, or electronic modules that may be needed
Verdict: A cost-conscious, single-source rebuild kit that bundles the common internal parts needed to refresh Mercedes 722.9 transmissions.
3. Yeedaky Master Overhaul Rebuild Kit for Mercedes-Benz 722.6 5-Speed Transmission
| Manufacturer | Yeedaky |
|---|---|
| Model | Master Overhaul Rebuild Kit |
| Compatibility | Mercedes Benz 722.6 5-SPEED Transmission C-Typ |
| Exterior | Polished |
This master overhaul rebuild kit is packaged as a one-stop option for rebuilding the Mercedes-Benz 722.6 five-speed transmission. It includes the critical friction and steel clutch plates and matching components needed when performing a full transmission teardown and rebuild. The kit is built to the factory-style design to simplify installation for a competent technician and is presented as a budget-friendly alternative to dealer parts. In practice it is useful for addressing worn clutches, slipping gears, or during a full overhaul where matched friction materials and steels are required. Expect the practical benefit of having most consumable wear items in a single kit, which reduces sourcing time and helps keep shop labor focused. Limitations are typical of value-oriented kits: exact fit and long-term durability can vary compared with higher-end or factory parts, and professional verification of included components against your vehicle build is recommended before assembly.
Best for: Budget-conscious owners and independent shops looking to rebuild a Mercedes-Benz ML-Class with a cost-focused approach who prioritize complete coverage of common wear parts over premium-brand components.
Less Ideal for: Owners seeking an exact factory-level replacement with the highest longevity or those who prefer dealer-sourced components should consider higher-end or OEM kits instead.
- Includes matched friction and steel plates to cover most wear items for a full 722.6 transmission overhaul
- Designed to follow factory-style layout for straightforward installation by a technician
- Single kit reduces parts sourcing and keeps rebuild labor efficient
- Durability and long-term performance may not match OEM factory or premium rebuild kits
Verdict: Provides an affordable, all-in-one rebuild kit to replace worn friction and steel components in the Mercedes-Benz 722.6 transmission.
4. Transmission Master Rebuild Kit W5A580 for Mercedes T14100B
| Item model number | W5A580 |
|---|---|
| Applications | For Mercedes T14100B |
| Manufacturer | U/K |
This rebuild kit supplies the internal parts needed to overhaul the W5A580 family transmission used in Mercedes T14100B applications. It is packaged as a single kit that replaces worn internal components during a teardown and rebuild, so technicians use it when restoring shifting quality and eliminating slip or leaks. The listing highlights the factory-style item model W5A580 and identifies compatibility with Mercedes T14100B, which helps confirm fitment for the targeted ML-Class transmissions. Practical benefits include having a consolidated parts set that reduces sourcing time and ensures replacement parts match the transmission series. Limitations are that the listing does not detail each included component, clutch counts, or friction material types, so installers should verify the kit contents against a teardown before ordering. This kit is best used by experienced mechanics or shops familiar with Mercedes transmission rebuild procedures where correct parts matching is critical.
Best for: Reliability-focused owners and independent shops seeking a coordinated parts kit to restore a Mercedes ML-Class transmission to stable, long-term operation.
Less Ideal for: DIYers without transmission rebuild experience or anyone who needs a clearly itemized parts list before committing to a purchase.
- Designed for W5A580 transmissions used in Mercedes T14100B applications
- Provides a consolidated set of internal parts for a rebuild to simplify sourcing
- Sold as a complete kit to help restore shifting performance and address internal wear
- Listing lacks a detailed parts breakdown so buyers must confirm exact contents before purchase
Verdict: A focused rebuild kit for W5A580/T14100B Mercedes transmissions that simplifies parts sourcing for a proper transmission overhaul.
5. Solarhome Transmission Master Rebuild Kit for Mercedes T14100B
| Manufacturer | Solarhome |
|---|---|
| Part Number | 722.621-722.649 |
| Included Parts | Gasket and seal kit, Clutch pack, Steel plate kit |
| Condition | New |
This Solarhome master rebuild kit is a full overhaul set for Mercedes T14100B transmissions that combines a complete gasket and seal kit with friction plates, steel plates, and a clutch pack so you can replace worn internal components during a transmission rebuild. It is typically used in a shop or DIY rebuild where the transmission is disassembled and all sealing and friction components are replaced to restore shifting performance and stop leaks. Notable features include the comprehensive gasket and seal set and matched friction and steel plate kits, which simplify sourcing by bundling parts normally bought separately. The practical benefit is a single-package solution that speeds up rebuilds and helps ensure parts compatibility for the specified Mercedes transmission. Limitations are that the kit is specific to T14100B applications and does not include bearings, shafts, or machine work, so additional parts or service may be required depending on transmission condition and repair scope.
Best for: Convenience-driven owners and independent shops who prioritize a bundled, ready-to-install parts package to speed up a Mercedes T14100B transmission rebuild and reduce ordering hassle.
Less Ideal for: Buyers who need a complete teardown-to-rebuild kit including bearings, shafts, or valve body components should look for a more comprehensive overhaul or plan for additional parts and machining services.
- Comprehensive package includes gaskets, seals, friction plates, steel plates, and clutch pack so you get most internal wear parts in one purchase.
- Targets Mercedes T14100B transmissions specifically, reducing compatibility guesswork for that application.
- Saves time sourcing parts separately which is convenient for fast rebuilds or scheduled overhauls.
- Does not include mechanical components such as bearings, shafts, or valve body parts so additional purchases or machine work may be needed.
- Fitment is limited to T14100B transmissions and requires VIN or model confirmation to ensure correct application.
Verdict: A convenient all-in-one gasket, seal, and plate rebuild kit that speeds up Mercedes T14100B transmission overhauls.
6. TRANSPEED 722.4 Transmission Master Rebuild Kit for Mercedes-Benz
| Brand | TRANSPEED |
|---|---|
| Model | Master Kit |
| Item model number | 722.4 |
| Manufacturer Part Number | T20900A |
This TRANSPEED 722.4 master rebuild kit supplies the friction plates, steel plates, seals, and related components needed to overhaul a Mercedes-Benz 722.4 automatic transmission. It is intended for use during a transmission rebuild or clutch pack refresh and is packaged as a single set with parts matched to the 722.4 family. Notable features include friction plates formulated for strong heat resistance and adhesion plus fluororubber seals that the listing says offer oil and aging resistance for high-temperature service. For a risk-averse owner the kit provides a one-stop parts package that makes it easier to source compatible friction and steel components rather than buying piecemeal. Important limitations are that the listing focuses on friction and seal items only and does not cover installation, hard parts like solenoids or torque converters, or vehicle-specific verification beyond the 722.4 designation, so confirm your transmission code before buying. This kit suits a careful DIYer or an independent shop rebuilding the 722.4 transmission on qualifying Mercedes models.
Best for: Risk-averse mainstream buyers who prioritize having a complete, matched parts package when rebuilding a Mercedes 722.4 transmission and want to minimize sourcing uncertainty.
Less Ideal for: Shops or owners who need a full rebuild including hard parts or electrical components should choose a more comprehensive kit or buy additional OEM hard parts separately.
- Comprehensive master kit includes friction plates, steel plates and seals for a 722.4 rebuild
- Friction plates marketed for strong heat resistance and durable friction characteristics
- Seals made from fluororubber designed for oil, aging and temperature resistance
- Packaged as a single set to simplify parts sourcing for a rebuild
- Does not include hard parts such as solenoids, torque converter, or valve body components
- Fitment guidance is general to the 722.4 family so buyers must verify their transmission code
Verdict: A convenient, matched friction and seal rebuild kit for Mercedes 722.4 transmissions that streamlines parts sourcing for a clutch pack overhaul.
Choosing the Right Mercedes-Benz ML-Class Transmission Rebuild Kit: Key Factors to Consider
Component Coverage
A rebuild kit should include all the internal components commonly replaced during an ML-Class transmission overhaul. That typically means friction plates, steels, bands if applicable, clutches, thrust washers, and any small drive or reaction components required by the specific transmission design.
Missing parts force additional purchases and can delay the job. Comprehensive kits reduce the chance of overlooked failure points and help ensure that wear in one area is not left unaddressed. When evaluating coverage, compare the kit contents to the transmission tear-down or service manual for the ML-Class to confirm nothing essential is omitted.
Seal and Gasket Quality
Seals and gaskets are crucial for preventing fluid leaks and maintaining hydraulic pressure, which directly affects shift timing and firmness. High-quality elastomers resist heat and chemical breakdown from transmission fluid and maintain sealing surfaces under pressure.
Poor seals lead to leaks and low line pressure, which will cause slipping and erratic shifting. Look for kits that specify material types or include multiple thickness options for gaskets where dimension tolerance matters. Properly fitting seals that match ML-Class bore and shaft dimensions minimize the need for custom modification during installation.
Dimensional Tolerances and Fitment
Transmission components must fit within tight tolerances for the assembly to function correctly. Plates, drums, pistons, and valve body interfaces should match OEM dimensions or clearly state acceptable tolerances.
Kits that provide tolerance information or are designed specifically for ML-Class transmission variants reduce the risk of clearance issues or preload errors. Accurate fitment speeds the rebuild process and reduces the chance of early failures caused by improper component interaction.
Material and Manufacturing Standards
Materials influence durability and performance under load and heat. Friction materials should be rated for automatic transmission applications and hard parts should resist deformation and wear. Quality coating or treatments on steel parts can reduce corrosion and scuffing.
Manufacturing consistency also matters. Components produced with controlled machining and heat treatment practices tend to have more predictable performance. Verify whether the kit maker follows recognized production standards or provides material specifications when possible.
Hardware and Installation Support
A good kit includes the fasteners, snaps, springs, and any exclusive hardware required for the rebuild. Missing or generic hardware can complicate reassembly and may require sourcing specific fasteners or clips later.
Clear labeling, organized packaging, and included instructions or a parts list save time and reduce installation errors. While not a substitute for a factory manual, practical installation notes or reference numbers help technicians match parts during reassembly.
Compatibility With Service Procedures
Rebuild kits should align with known ML-Class service procedures, including torque specs, clearances, and any special assembly steps. Components that require alternate procedures or additional machining add complexity and risk.
Consider whether the kit necessitates extra tools, modifications, or calibration steps beyond the standard rebuild workflow. Kits designed to integrate smoothly into existing service routines reduce labor time and lower the chance of assembly mistakes.
How We Chose the Best Mercedes-Benz ML-Class Transmission Rebuild Kit
Our selection process focused on editorial filters that reflect real-world transmission rebuild needs for the Mercedes-Benz ML-Class. We prioritized kits that provide comprehensive component coverage, including friction materials, gaskets, seals, and hard parts needed for a typical overhaul. Fitment accuracy to ML-Class transmission specifications was required to reduce installation complications.We evaluated material quality and tolerance precision, since durable materials and correct dimensions affect longevity and shift quality. Packaging completeness and clear hardware identification were considered to simplify installation and reduce the risk of missing parts. We also checked documented compatibility with ML-Class transmission model years and typical service procedures.Kits that only included a subset of seals or a single component were excluded, as were offerings with unclear fitment information. We did not include remanufactured complete transmissions or donor cores; the list is limited to rebuild kits intended for in-place overhaul and component replacement.
Our full evaluation process is outlined in our review methodology.
FAQ
What does a transmission rebuild kit for an ML-Class typically include?
A typical kit contains friction plates, steels, seals, gaskets, and the small hardware needed for reassembly. Some kits also include thrust washers and selective shims to set clearances. The exact contents depend on the transmission variant, so check the parts list against the service manual before starting work.
How do I know which kit fits my ML-Class transmission?
Identify the exact transmission model and year for your ML-Class from the vehicle or service documentation. Then match those identifiers to the kit's stated fitment. Kits that list specific transmission codes or year ranges for the ML-Class are more likely to fit without modification.
Can I rebuild an ML-Class transmission myself?
Some experienced DIYers can complete an in-place rebuild, but it requires mechanical skill, proper tools, and a service manual. Tasks such as measuring clearances, setting pump tolerances, and installing seals demand precision. If you are unsure, working with a qualified technician is usually safer.
How important are gaskets and seals during a rebuild?
Gaskets and seals are critical for maintaining fluid pressure and preventing leaks. Worn or incorrect seals lead to low line pressure and poor shifting performance. Replacing seals and gaskets with properly fitting pieces is essential to restore reliable operation.
What should I do if a kit is missing parts on arrival?
First, verify the kit contents against the included parts list. If pieces are missing, contact the supplier or manufacturer to request replacements and document the discrepancy. Avoid beginning the rebuild until you have all required components to prevent delays or incomplete repairs.
Conclusion
Choosing the right rebuild kit for a Mercedes-Benz ML-Class comes down to matching coverage, fitment, and material quality to the transmission variant you are servicing. Prioritize kits that include all necessary friction components, seals, and any required hard parts so you do not face unexpected gaps during the rebuild.Balance ease of installation against material and dimensional accuracy. Proper seals and correct tolerances will have the biggest effect on shift quality and longevity, while comprehensive packaging and clear parts lists will reduce install time and errors.
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