Bilstein 36-129041 Coil Spring - Front

Bilstein B3 OE Replacement Front Coil Spring

The Bilstein B3 OE Replacement front coil spring restores factory ride height, spring rate, and suspension geometry for select BMW 3 Series models. Built to OE dimensions and design standards, this spring is a direct replacement for worn or sagging front suspension components.

Finished in black powder coat, part number 36-129041 is part of Bilstein’s B3 OE Replacement line, which focuses on restoring original suspension function with OE-style fit and performance.

Key Features

• OE replacement front coil spring for factory-style suspension restoration
• Manufactured to OE dimensions, spring rates, and design type
• Black powder coat finish for added surface protection
• Bilstein B3 OE Replacement series
• Part number 36-129041

Detailed Description

Bilstein 36-129041 is a front coil spring engineered for BMW applications that require an OE-style replacement rather than a lowered or performance-tuned spring. It is built to match original spring dimensions and rate characteristics so the suspension can return to factory specifications for ride height, handling balance, and load support. This makes it a practical choice for BMW 318i, 325i, 328i, and related models when the original front spring has weakened, settled, or broken.

The B3 OE Replacement line is focused on restoring the vehicle’s original suspension behavior. For BMW 323i, 323is, 328is, 318is, and 325is front suspension service, this spring supports a direct OE-style repair approach. This part cross-references Lesjofors 4008407 for the same application.

Vehicle Fitment

• Fits 1999 BMW 323i, front, heavy duty version for standard suspension only; B3 OE Replacement
• Fits 1998-1999 BMW 323is, front, heavy duty version for standard suspension only; B3 OE Replacement
• Fits 1996-1999 BMW 328i, front, heavy duty version for standard suspension only; B3 OE Replacement
• Fits 1996-1999 BMW 328is, front, B3 OE Replacement
• Fits 1993-1998 BMW 318i, front, heavy duty version for standard suspension only; B3 OE Replacement
• Fits 1992-1997 BMW 318is, front, heavy duty version for standard suspension only; B3 OE Replacement
• Fits 1993-1995 BMW 325i, front, standard suspension only; B3 OE Replacement
• Fits 1992-1995 BMW 325is, front, heavy duty version for standard suspension only; B3 OE Replacement
• Fits 1992 BMW 318i, front, from 5/1992; B3 OE Replacement
• Fits 1992 BMW 325i, front, from 5/1992; B3 OE Replacement

Installation Notes and Tips

Verify the vehicle’s suspension type and model-year notes before installation, especially for standard suspension, heavy duty version, and from 5/1992 applications. Front coil spring replacement should be performed with proper spring compression tools and suspension service procedures. Inspect related front suspension components for wear before reassembly.

Quality Assurance

Bilstein manufactures B3 OE Replacement springs to OE dimensions, spring rates, and design types so the replacement matches factory suspension requirements for the listed BMW applications.