Bilstein 37-133726 Coil Spring - Front

Bilstein B3 OE Replacement Front Coil Spring

The Bilstein B3 OE Replacement coil spring is built to restore factory suspension height, spring rate, and original design geometry. This front coil spring is a direct OE-style replacement for select Mercedes-Benz C-Class applications, including Mercedes-Benz C230, C280, C350, C240, and C320 models with standard suspension.

Finished in black powder coat, the Bilstein B3 OE Replacement line focuses on matching original equipment dimensions and spring characteristics so the suspension can return to factory-spec function and safety. Part number 37-133726 is a front coil spring for drivers replacing a worn, sagging, or damaged original spring on the listed Mercedes-Benz vehicles.

Key Features

• OE replacement coil spring for factory-style suspension restoration
• Matches original OE dimensions, spring rates, and design type
• Black powder coat finish for added surface protection
• Front position application
• Bilstein B3 OE Replacement series
• Part number 37-133726

Detailed Description

Bilstein B3 OE Replacement coil springs are engineered to replace the original spring with the same dimensional and rate characteristics used by the vehicle manufacturer. That makes this spring a practical choice for Mercedes-Benz C230 front coil spring replacement, Mercedes-Benz C280 front suspension repair, Mercedes-Benz C350 front spring replacement, and Mercedes-Benz C240 or C320 front suspension service on standard suspension vehicles. The B3 OE Replacement line is focused on returning the suspension system to original function rather than changing ride height or handling balance.

This part cross-references Lesjofors 4056862 for the same application.

What This Part Helps Address

• Front-end sag from a weakened or collapsed spring
• Uneven ride height on standard suspension vehicles
• Noise or instability caused by a damaged coil spring
• Loss of factory ride quality after spring fatigue
• Suspension restoration after OE spring wear

Installation Notes and Tips

• Compatible With 2006-2007 Mercedes-Benz C230, front, standard suspension only
• Compatible With 2006-2007 Mercedes-Benz C280, front, standard suspension only
• Compatible With 2006-2007 Mercedes-Benz C350, front, standard suspension only
• Compatible With 2001-2005 Mercedes-Benz C240, front, standard suspension only
• Compatible With 2001-2005 Mercedes-Benz C320, front, standard suspension only
• Verify standard suspension configuration before ordering; this spring is not listed for other suspension setups
• Inspect related suspension components during replacement to confirm proper ride height and alignment

Quality Assurance

Bilstein designs the B3 OE Replacement series to meet OE dimensions, spring rates, and design types, supporting a factory-spec suspension repair on the listed Mercedes-Benz applications. Part number 37-133726 is built as an OE-style replacement for direct suspension restoration.