Choosing the Right Transmission Filter Kit for a 2006 CLS55 AMG
Keep your CLS55 AMG's 5G-Tronic transmission shifting like new with the correct service parts.
- The 2006 CLS55 AMG uses the robust 722.6 5-speed automatic transmission.
- It is critical to replace the 13-pin electrical connector during a filter service to prevent common leaks and potential electrical damage.
- Use only transmission fluid that meets the MB 236.14 specification.
- Choosing an OEM supplier brand like Hengst or a reputable aftermarket brand like Wix provides a good balance of quality and value.
Is it Time for a New Transmission Filter?
A clogged transmission filter can starve the system of clean fluid, leading to serious issues. If you notice your CLS55 AMG exhibiting harsh shifting, delays when going into Drive or Reverse, or making unusual whining noises, your filter might be to blame. In severe cases, the transmission may go into "limp mode," where it gets stuck in a single gear to prevent further damage. A burning smell from the fluid or finding dark, gritty fluid on the dipstick are also clear signs that a service is overdue.
🎬 Watch these six warning signs of a clogged transmission filter.A Known Issue: The 13-Pin Connector
A very common problem on the 722.6 transmission is a leak from the 13-pin electrical connector, also called the pilot bushing. The O-rings on this part can degrade, allowing transmission fluid to leak out. This can cause shifting problems and, in a worst-case scenario, fluid can travel up the wiring harness into the transmission control module (TCM), causing major electrical issues. It is highly recommended to replace this inexpensive part during any transmission filter service.
🎬 See how to fix a leaking 722.6 transmission adapter plug.Choosing the Right Aftermarket Transmission Kit
Not all aftermarket parts are created equal. For a high-performance vehicle like the CLS55 AMG, using a quality kit is essential. The kits typically include a filter, pan gasket, and sometimes a drain plug washer and the 13-pin connector.
- Tier 1 (OEM Suppliers): Brands like Hengst and Elring are often the original equipment manufacturers for Mercedes-Benz. Choosing these brands is the closest you can get to dealer quality without the dealer price tag. They offer a guaranteed fit and performance that matches the original part.
- Tier 2 (Reputable Aftermarket): Brands like Wix and Beck Arnley have a strong reputation for producing quality filters and components that meet or exceed OEM standards. These are a reliable and cost-effective choice for most owners. Forum users often report good experiences with these well-known brands.
- Tier 3 (Budget Options): Brands such as ATP and Premium Guard offer the most affordable kits. While they can get the job done, the quality of materials, especially the gasket, may not be as high as the premium brands. For a precision vehicle like an AMG, it's often worth spending a little more for the peace of mind that comes with a higher-tier brand.
Pro Tip: Fluid is Everything
When servicing your transmission, using the correct fluid is just as important as the filter. Your 722.6 transmission requires fluid that meets the MB 236.14 specification. This fluid has superseded older versions like 236.10 and 236.12 and is fully backward compatible. Always verify the fluid type and capacity before starting the job.
Cost of a New Transmission Filter Kit
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Kit | $21 - $115 |
| New OEM Kit (Dealer) | $75 - $200 |
| Shop Labor | $150 - $300 |
Frequently Asked Questions
How often should I change my transmission filter?
For the 722.6 transmission in the CLS55 AMG, a service interval of 40,000 to 60,000 miles is recommended. Due to the high performance of the AMG model, sticking to the lower end of this range is a good practice to ensure longevity.
What is included in a typical transmission filter kit?
A basic kit includes the filter and the transmission pan gasket. More comprehensive kits will also include a new drain plug washer, a new 13-pin electrical connector, and a lock pin for the dipstick tube.
Can I perform this replacement myself?
Yes, this is a DIY-feasible job for an intermediate home mechanic. It requires safely lifting the car, basic hand tools, a torque wrench, and an infrared thermometer to check the fluid temperature. The most critical part of the job is refilling the transmission to the correct fluid level, which must be checked at a specific temperature (usually 80°C). An aftermarket dipstick tool is required, as the car did not come with one from the factory.
🎬 Follow this step-by-step guide for a 722.6 transmission service.Are there any recalls for the transmission on this vehicle?
No, there are no specific NHTSA recalls for the transmission, filter, or related components on the 2006 CLS55 AMG. Recalls found for this model year relate to the sunroof bonding.
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Technical Specifications
OEM Part Numbers: 1402770095 A1402770095
Fits Mercedes-Benz 5-Speed 722.6 Automatic Transmission (5G-Tronic).
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Mercedes-Benz CLS55 AMG: