Bilstein 36-225866 Coil Spring - Rear

Bilstein B3 OE Replacement Rear Coil Spring

The Bilstein B3 OE Replacement coil spring restores factory-style suspension height and spring rate for the rear of select BMW sedans. Built to OE dimensions and design standards, this spring is a direct replacement for worn or sagging original equipment.

Compatible with rear suspension applications on the BMW 525i, 530i, and 535i listed below, this Bilstein coil spring helps return the vehicle to original ride characteristics and factory-spec suspension function.

Key Features

• Bilstein B3 OE Replacement series
• Rear coil spring for standard suspension only
• Manufactured to OE dimensions, spring rates, and design type
• Black powder coat finish
• Restores factory suspension geometry and ride height
• Part number 36-225866

Detailed Description

Bilstein B3 OE Replacement springs are engineered as direct replacements for original factory springs, matching the OE dimensions and spring rate required for proper suspension performance. This rear coil spring is built for standard suspension applications on BMW 525i, BMW 530i, and BMW 535i models, helping maintain the original ride quality and load support expected from the factory setup. The black powder coat finish adds corrosion resistance for long-term service.

This part cross-references Lesjofors 4208407 for the same application. Part number 36-225866 is the correct reference when searching for a rear OE-style spring for these BMW applications.

What It Helps Address

• Sagging rear ride height
• Broken or fatigued original coil springs
• Uneven rear suspension stance
• Loss of factory spring rate and support
• Restoration of OE suspension behavior on BMW 525i, BMW 530i, and BMW 535i

Installation Notes and Tips

• Fits 1989-1995 BMW 525i, rear, standard suspension only
• Fits 1994-1995 BMW 530i, rear, standard suspension only
• Fits 1989-1993 BMW 535i, rear, standard suspension only
• Verify standard suspension configuration before ordering
• Inspect related rear suspension components during spring replacement
• Professional spring compression tools and proper service procedures are recommended

Quality Assurance

Bilstein B3 OE Replacement springs are manufactured to meet OE dimensions, spring rates, and design requirements for factory-spec restoration. Part number 36-225866 is built for consistent fitment and suspension function on the listed BMW rear applications.