Bilstein 37-161903 B3 Front Coil Spring for BMW 5 Series E60 (520i 523i 525i 528i) OE Replacement Front Axle

Bilstein B3 Front Road Spring for BMW 5 Series E60 520i 523i 525i 528i

Restore the crisp, factory feel of your E60’s front end with this Bilstein B3 front road spring. Built to genuine specification and engineered for the BMW 5 Series saloon platform, it reinstates correct stock height, ride comfort and steering precision on petrol models 520i, 523i, 525i and 528i. Ideal if your original spring has snapped, sagged or failed an MOT, this direct-fit replacement refreshes the front suspension without changing the character of your car.

Part number: 37-161903 | Also known as: BILSTEIN-37-161903

Why it is the smart choice

• Factory-correct geometry for the front end of the E60 chassis saloon petrol variants
• Consistent ride height and confident road holding on British roads
• Quiet, refined operation with OE-grade materials and manufacturing standards
• Direct-fit solution for the front axle, left or right side, with no modifications required

Engineering highlights

• High-tensile spring steel for exceptional durability and break resistance
• Hot set after forming to minimise height loss over time
• Shot-peened and coated for corrosion resistance and long service life
• Profiled ends and model-specific winding for accurate seating and load distribution

Compatibility

Designed for BMW 5 Series E60 saloon, petrol models:

• 520i E60
• 523i E60
• 525i E60
• 528i E60

Model years typically 2003 to 2010 for the E60 saloon. Front axle position only.

What our customers say

We have installed these springs on customer E60 cars and feedback has been excellent. Owners report restored stance, improved stability and that confident OEM driving feel once tired front springs are replaced with this Bilstein B3 unit.

Professional fitting

Want it fitted properly first time? Book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote.

Check before you buy

We can verify suitability before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm the correct application for your BMW E60 saloon.

Identifiers

• Manufacturer: Bilstein
• Part number: 37-161903 | BILSTEIN-37-161903
• EAN: 4025258630294
• UPC: 651860630199

Helpful search terms

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Choose the Bilstein B3 front road spring to bring your BMW’s handling and comfort back to its best with dependable, OE-level quality.