Delphi TBR3159 Rack and Pinion Bellows Kit - Front

OE-Style Steering Rack Bellows for BMW

The Delphi TBR3159 rack and pinion bellows kit is a standard replacement for front steering applications on select BMW models. Built with Delphi OE-focused engineering, it is made to match dimensional and material requirements for proper fit around the steering gear.

Key Features

• Rack and pinion bellows kit for front steering applications
• Black bellows color
• Standard replacement item grade
• OE-based dimensional and material analysis for fitment consistency
• Tested for temperature extremes below -40 C and above 120 C
• Exposed to 720 hours of salt spray during validation

Detailed Description

Delphi TBR3159 is a front rack and pinion bellows kit engineered for BMW steering systems that require a direct-fit replacement boot. It helps protect the steering rack from road debris, moisture, and contamination while maintaining the correct bellows shape and movement. This part is listed for applications including 1984-1994 BMW 318i, 1987-1992 BMW 325i, 1989-1991 BMW 525i, and other select BMW 3, 5, 6, 7, and M-series models. The Delphi TBR3159 also cross-references Beck/Arnley 103-2702 for the same application.

What It Helps Address

• Cracked or torn steering rack bellows
• Contamination entering the steering rack area
• Loss of protection around the rack and pinion assembly
• Improper bellows fit on BMW front steering systems
• Wear-related replacement needs on older BMW steering components

Installation Notes and Tips

Verify front-position fitment before installation and compare the original bellows dimensions to the replacement part. Inspect the steering rack, tie rod ends, and surrounding seals for wear before reassembly. For BMW 318i, 325i, 525i, 535i, 735i, and M3 front steering applications, confirm the vehicle year and model match the listed fitment exactly.

Quality Assurance

Delphi applies OE-focused testing and material analysis to its aftermarket steering portfolio. This bellows kit is validated for temperature extremes and salt-spray exposure to support durability in demanding driving conditions.