Rein BKK0128 Rack and Pinion Bellows Kit

OE-Quality Steering Rack Boot for BMW

Rein BKK0128 is an application-specific rack and pinion bellows kit for BMW steering systems. It is built to help keep dirt, sand, and road debris away from the steering rack while maintaining the original equipment-style fit needed for a proper repair.

Fits 1999-2008 BMW 323i, 328i, 323Ci, 328Ci, 320i, 325i, 330i, 325Ci, 330Ci, M3, and Z4 applications listed below. This Rein BKK0128 steering rack boot is made for BMW 3 Series and Z4 models where OE-style fit and sealing matter.

Key Features

• Application-specific design for the listed BMW fitments
• Matches original equipment design specifications
• Boot material is selected to resist cracking, wear, and leakage
• Includes the hardware needed for the repair, such as clamps, washers, and clips
• Rein BKK0128 is a direct-fit steering rack bellows kit for service replacement

Detailed Description

The steering rack boot protects the rack and related steering components from contamination that can accelerate wear. Rein Automotive builds this OE-quality power steering rack boot to match the original design for the specified BMW applications, helping restore the protective seal around the rack and pinion assembly. If you are replacing a damaged BMW steering rack boot on a 1999-2008 BMW 323i, 328i, M3, or Z4, this part number BKK0128 provides a fit-focused repair solution.

This part cross-references BMW 32131096909 and URO 32131096910 for the same application.

What It Helps Address

• Torn or cracked steering rack bellows
• Contamination entering the steering rack area
• Grease loss and moisture exposure around the rack
• Wear caused by road grit and debris
• Failed OE-style boot fitment during steering service

Installation Notes and Tips

Inspect the steering rack, tie rod ends, and surrounding seals before installation. Clean the rack area thoroughly, confirm the boot seats correctly on the housing and tie rod side, and verify that all retaining points are secured before returning the vehicle to service. For BMW steering rack boot replacement, confirm the vehicle year and model against the fitment list before ordering.

Quality Assurance

Rein BKK0128 is built to OE design specifications and manufactured with materials selected for durability in steering service. Rein Automotive positions this boot kit as an application-specific replacement for the listed BMW models, with fitment coverage for 1999-2008 BMW 323i, 328i, 323Ci, 328Ci, 320i, 325i, 330i, 325Ci, 330Ci, M3, and Z4 applications.