Bilstein 37-294496 Coil Spring - Front

Bilstein B3 OE Replacement Coil Spring

Restore factory ride height and suspension geometry with the Bilstein B3 OE Replacement coil spring, part number 37-294496. This front coil spring is built for BMW X3 and BMW X4 models with standard suspension and no electronic suspension, making it a direct OE-style replacement for worn or sagging original springs.

Key Features

• OE replacement coil spring for front suspension service
• Manufactured to match original OE dimensions, spring rates, and design type
• Black powder coat finish for corrosion resistance
• Bilstein B3 OE Replacement series for factory-spec suspension restoration
• Direct fit for BMW X3 and BMW X4 front applications listed below

Product Line Details

The Bilstein B3 OE Replacement line is focused on restoring original suspension function rather than changing ride characteristics. These springs are produced to follow the OE dimensions and spring rate requirements of the factory part, including design details such as miniblock or central force configurations where applicable. For BMW X3 and BMW X4 owners, that means a replacement spring that supports the vehicle’s original suspension setup and safety-related geometry.

Fitment

• Fits 2015-2018 BMW X4, front, standard suspension without electronic suspension; B3 OE Replacement.
• Fits 2013-2017 BMW X3, front, standard suspension without electronic suspension; B3 OE Replacement.

This part cross-references BMW OE part number 31 33 6 787 135 for the same application. Part number 37-294496 is the correct reference when searching for a front coil spring for BMW X3 and BMW X4 standard suspension setups.

Common Issues This Spring Can Address

• Sagging front ride height from a fatigued original spring
• Uneven stance caused by spring wear or loss of spring rate
• Noisy or unstable front suspension behavior related to a weakened coil spring
• Factory ride quality changes after the original spring has deteriorated
• Suspension geometry concerns caused by a worn OE spring

Installation Notes

Install 37-294496 on the front axle only for the listed BMW X3 and BMW X4 applications. Verify that the vehicle has standard suspension without electronic suspension before ordering, and compare the removed spring to the replacement for correct side-by-side specification matching. Professional spring compressor tools and proper suspension service procedures are recommended during installation.

Quality Assurance

Bilstein manufactures B3 OE Replacement springs to OE dimensions, spring rates, and design types so the replacement matches factory specifications as closely as possible. The black powder coat finish adds a durable protective layer for everyday suspension service.