Bilstein B3 Rear Suspension Coil/Back Spring 36-313259 for BMW 3 Series E91 Touring/Estate (Wagon) & E93 Convertible/Cabriolet (2004-2013) – OE Spec Standard Suspension, Stock Height – Fits 335i 325d 330d 335d – Rear Axle Direct Fit Replacement

Bilstein B3 Rear Suspension Spring for BMW 3 Series E91 Estate and E93 Cabriolet | Part No. 36-313259

Restore stock ride height, comfort and handling on your BMW with this OEM-grade Bilstein B3 rear suspension spring, part number 36-313259. Engineered for the rear axle of BMW 3 Series E91 Touring and E93 Convertible models, including 335i, 325d, 330d and 335d, it is a direct-fit, high quality replacement that brings your car back to how it should feel from the factory.

If your estate or cabriolet sits low at the back, feels unsettled, or has an MOT advisory for a cracked spring, this is the dependable fix. Expect factory-level refinement, consistent ride height and stable road manners without harshness.

Why choose this Bilstein B3 spring

• Original equipment performance for standard suspension vehicles
• Calibrated rates to maintain balance, geometry and traction
• High tensile chrome-silicon or chrome-vanadium steel for strength and longevity
• Heat-set and stress-relieved to resist sagging over time
• Corrosion-protected finish for durability in UK conditions
• Ideal replacement for tired, cracked or broken rear springs

What you will notice

• Correct rear ride height restored
• Improved comfort over bumps and speed humps
• Predictable handling, better stability with passengers or luggage
• Confidence on motorways and B-roads, especially on loaded Touring models

Fitment details

Position: Rear axle

Chassis: BMW 3 Series E91 Touring and E93 Convertible

• E91 Touring 12/2004 to 12/2012 – 335i, 325d, 330d, 335d
• E93 Convertible 05/2006 to 12/2013 – 335i, 325d, 330d

Designed as a like-for-like replacement to maintain standard ride height and factory characteristics.

Technical highlights

• Precision-wound helical spring with model-specific ends for perfect seat location
• Miniblock and pigtail geometries used where required by OE design
• Shot-peened and surface conditioned for fatigue resistance
• Coated for excellent protection against rust and road grime

Part identifiers

• Manufacturer Part Number: 36-313259
• EAN: 4025258864514
• UPC: 651860871707

Our workshop experience

We have installed this exact Bilstein B3 rear spring on many customer E91 and E93 cars. Feedback has been consistently positive, with owners praising the restored stance, smoother ride and sure-footed stability. It is the hassle-free, OE-quality solution that simply works.

Ordering and compatibility check

We verify fitment before dispatch. At checkout, supply your UK registration or the last 7 digits of your VIN so we can confirm it is correct for your vehicle.

Fitting service

Professional installation available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote.

Helpful workshop tips

• For balanced handling, replace rear springs in pairs
• Inspect rubber spring pads and mounts while you are there, and replace if worn

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