Rein Transmission Service Kit

Rein Transmission Service Kits: Complete, OE-Quality Solutions

When it comes to automatic transmission maintenance on European vehicles, cutting corners is rarely an option — and Rein Automotive understands that better than most. Transmission service kits from Rein are engineered as fully comprehensive service solutions, giving technicians and serious DIYers everything they need to complete a proper transmission service without hunting down individual components. That "all-in-one" philosophy is central to what makes Rein stand out in this category.

What’s Inside a Rein Transmission Service Kit?

Rein designs each kit around a specific transmission platform, so the parts list varies by application — but every kit is purpose-built for completeness. Depending on the kit, contents typically include:

• Oil pan (with integrated filter where applicable)
• Pan gasket and filter O-ring
• Drain plug and drain plug washer
• Valve body sealing adapter and sealing sleeves
• Harness plug sleeve and fill plug seal
• OEM valve body conductor plate (select kits)
• Dipstick tube cover locking pin and tube seal (select kits)

Rein service kits contain direct-fitting, OE-quality components for maximum durability, and parts included will vary depending on the specific vehicle kit, but all include oil pan, filter, gaskets/seals, and hardware. The goal is a single part number that covers the entire service event — no last-minute hardware runs required.

Engineered to Address Known Failure Points

What truly separates Rein's transmission kits from generic alternatives is the engineering intent behind each one. Rather than simply bundling the same parts that failed, Rein develops kits that target documented weak spots in specific transmissions.

Created in collaboration with highly experienced service technicians, these kits are a solution to the short-lived valve body sealing sleeves and adapter in ZF 6HP series transmissions. For the 722.6 platform found in millions of Mercedes-Benz vehicles, the kit was developed to address the common issue of automatic transmission fluid leaking through the harness plug — leaking fluid that travels to the conductor plate and causes improper function of the plate or the transmission’s ECU.

This problem-solving approach is a hallmark of the broader Rein brand. The Rein brand includes a growing number of "better than OE" parts for selected applications. These parts address known weaknesses and premature failures of factory parts, and many of these replacement and service solutions have been developed with the help of Rein’s Innovation Council — a hand-picked group of experienced professional repair technicians and shop owners throughout North America.

Wide Coverage for European Import Applications

Rein’s transmission service kits cover a remarkable breadth of popular European platforms. CRP Automotive offers Rein Automotive Automatic Transmission Service Kits for a wide range of European models equipped with ZF 6HP series transmissions. The Rein Transmission Service Kit provides application coverage for Mercedes-Benz models from 1996–2018 that feature 722.6 transmissions, with coverage also extending to Chrysler, Dodge, Freightliner, Jaguar, Jeep, and Maybach models from 1998–2018. Kits for the ZF 6HP platform service vehicles from Aston Martin, BMW, Hyundai, Jaguar, Kia, Land Rover, and Rolls-Royce. Combined, coverage provided by Rein Transmission Service Kits exceeds 1.4 million VIOs in the United States and Canada.

The Rein Standard: OE Quality, Verified

In German, ‘rein’ means ‘pure’ — and in the automotive industry, the Rein Automotive name has come to stand for quality and reliability. Today Rein Automotive distributes over 10,000 OE-quality parts. They are ISO 9001:2015 certified and have become recognized for their high-quality replacement parts, trusted by automotive enthusiasts, warehouse distributors, and professional repair technicians. Clearly labeled packaging includes the Rein part number, OEM part number cross-reference, parts description, GTIN number, box quantity, country of origin, and date code. That level of traceability matters when you’re working on a precision transmission.

For owners and shops maintaining late-model European imports, a Rein transmission service kit takes the guesswork out of sourcing parts — delivering a verified, transmission-specific solution engineered to restore proper function and help maximize the service life of the gearbox.