BBB Industries 306-0103 Rack and Pinion Assembly

Reman Rack and Pinion for BMW Steering Repair

BBB Industries Reman Rack and Pinion 306-0103 is a hydraulic steering gear assembly built for BMW models equipped with power steering. It is a remanufactured rack and pinion with inner tie rods included, making it a direct-fit steering replacement for select BMW 3 Series and Z3 applications.

Key Features

• Remanufactured hydraulic rack and pinion assembly
• Inner tie rods included; outer tie rods not included
• Pressure port thread size: M16x1.50
• Return port thread size: M16x1.50
• Input shaft diameter: 0.625 in. (15.878 mm)
• Input shaft length: 2.375 in. (60.325 mm)
• Rack length: 38.75 in. (984.25 mm)
• Turns lock to lock: 3.375
• Distance between mounting holes: 9.25 in. (234.95 mm)
• Two mounting holes

Detailed Description

BBB Industries 306-0103 is part of the Reman Rack and Pinion line, a steering component category focused on remanufactured gear assemblies for vehicles that require hydraulic power steering. This unit is built for BMW applications and is listed for 1991-2002 BMW 3 Series and Z3 models with power steering, including Fits 1991-1998 BMW 318i, N/A; Fits 1992-1997 BMW 318is, N/A; Fits 1992-1995 BMW 325i, N/A; Fits 1992-1995 BMW 325is, N/A; Fits 1995-1999 BMW 318ti, N/A; Fits 1995-1999 BMW M3, N/A; Fits 1996-1998 BMW 328i, N/A; Fits 1996-1999 BMW 328is, N/A; Fits 1998 BMW 323i, N/A; Fits 1998-1999 BMW 323is, N/A; and Fits 1998-2002 BMW Z3, N/A. The hydraulic design, port sizing, and mounting dimensions are important reference points when matching a replacement rack to the original steering system. Part number 306-0103 is also a useful search reference when comparing steering gear options for BMW 318i, BMW M3, and BMW Z3 repairs.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Part Helps Address

• Excessive steering play or looseness
• Fluid leakage from the steering rack assembly
• Uneven or inconsistent steering response
• Noise or binding during steering input
• Wear in the hydraulic rack and pinion mechanism

Installation Notes and Tips

• Verify hydraulic steering system configuration before ordering.
• Confirm mounting hole spacing, input shaft dimensions, and port thread size against the original unit.
• Outer tie rods are not included, so inspect existing components during service.
• Bleed the power steering system after installation to remove air from the hydraulic circuit.
• Check alignment after rack replacement to restore proper steering geometry.

Quality Assurance

BBB Industries remanufactures steering components to meet application-specific fitment requirements. This rack and pinion is built as a remanufactured replacement for select BMW steering systems and is identified by part number 306-0103.