Bilstein 37-239817 Coil Spring - Front

Bilstein B3 OE Replacement Coil Spring for BMW X3

The Bilstein B3 OE Replacement coil spring restores factory ride height, spring rate, and suspension geometry for the BMW X3. This front spring is built to OE dimensions and design type, making it a direct replacement for standard suspension applications on 2004-2010 BMW X3 models.

Part number 37-239817 is part of Bilstein’s B3 OE Replacement line, a range focused on returning suspension performance to original factory specifications. The black powder coat finish adds corrosion resistance while maintaining a clean OE-style appearance.

Key Features

• OE replacement coil spring for the front suspension
• Built to match original dimensions, spring rates, and design type
• Black powder coat finish for added surface protection
• Restores factory suspension function and safety
• Compatible with 2004-2010 BMW X3, front, standard suspension only
• Bilstein 37-239817 for direct-fit OE-style replacement

Detailed Description

Bilstein B3 OE Replacement coil springs are engineered for drivers who want to return the suspension to factory specifications without changing the original ride characteristics. For the BMW X3, this front coil spring is matched to OE dimensions and spring rates so the vehicle maintains the intended stance, handling balance, and suspension response. If you are replacing a worn or sagging spring on a 2004-2010 BMW X3, front, standard suspension only, 37-239817 provides an OE-style solution that follows the original design requirements.

This part cross-references Lesjofors 4008457 for the same application.

What It Helps Address

• Front-end sag or uneven ride height
• Loss of factory spring rate and ride control
• Noisy or fatigued suspension components related to spring wear
• Restoration after a broken or weakened coil spring
• Factory ride and handling concerns on BMW X3 standard suspension models

Installation Notes and Tips

Compatible With 2004-2010 BMW X3, front, standard suspension only. Verify suspension configuration before ordering, since this spring is not listed for non-standard suspension setups. Inspect related front suspension components during replacement, including mounts and isolators, to confirm the system is returned to proper operating condition. Professional spring compression tools and correct service procedures are recommended for installation.

Quality Assurance

Bilstein manufactures the B3 OE Replacement line to meet OE dimensions, spring rates, and design types, supporting a factory-spec suspension restoration for the BMW X3. Part number 37-239817 is built as an OE-style replacement for standard suspension applications.