Bilstein B3 38-129230 Rear Coil Spring for BMW 3 Series E46 1998-2007 - OE/OEM Rear Axle Replacement, Standard/Stock Ride Height - Saloon/Sedan, Coupe, Convertible/Cabrio, Touring/Estate Wagon Suspension Spring

Bilstein B3 Rear Suspension Spring 38-129230 for BMW E46 3 Series

Refresh the way your E46 drives with this Bilstein B3 rear suspension coil, part number 38-129230. Built to original equipment standards for the back axle, it restores factory ride height and the composed, quiet road feel BMW intended. If your 3 Series has sagged springs, tired handling or uneven stance, this direct-fit replacement spring is the dependable fix.

We run Bilstein B3 springs on our own cars and our customers love the result. Fit, finish and ride quality are spot on, delivering a stock-height setup that feels taut, refined and confidence inspiring on British roads.

Key benefits

• Direct-fit rear spring for BMW 3 Series E46 platforms
• OE-level consistency and geometry for factory-correct height
• Engineered spring shapes such as pigtail and minibloc for stable performance
• Premium chrome vanadium or chrome silicon spring steel for strength and crack resistance
• Hot set during manufacture to minimise height loss over time
• Surface compression and protective coating for durability and corrosion protection

Who is it for

Owners seeking a like-for-like rear spring that keeps standard chassis height and brings back tight handling, clean ride comfort and predictable grip. Ideal when replacing a broken back spring, correcting a lean, or renewing suspension during a refresh.

Fitting position

Rear axle

Vehicle coverage

BMW 3 Series E46, including saloon, coupe, convertible and touring models between 1998 and 2007, across many petrol and diesel variants.

• E46 Saloon 12.97 - 05.05
  • 316 i, 318 i, 320 i, 323 i, 325 i, 325 xi, 328 i, 330 i, 330 xi, 318 d, 320 d, 330 d, 330 xd
• E46 Coupe 12.98 - 07.06
  • 316 Ci, 318 Ci, 320 Ci, 323 Ci, 323 i, 325 i, 325 Ci, 328 Ci, 330 Ci, 330 xi, 320 Cd, 330 Cd
• E46 Convertible 04.00 - 12.07
  • 318 Ci, 320 Ci, 323 Ci, 325 Ci, 330 Ci, 320 Cd, 330 Cd
• E46 Touring 06.99 - 05.05
  • 316 i, 318 i, 320 i, 323 i, 325 i, 328 i, 330 i, 318 d, 320 d, 330 d

Fitment check

We will confirm compatibility before dispatch. Add your UK registration or the last seven of your VIN at checkout and we will verify this rear spring suits your exact E46 model and drivetrain.

Professional installation

Prefer us to fit it We offer expert suspension fitting at MJ Modifications in Warwickshire. For a quote, email info@mjmodifications.co.uk.

Part identifiers

• Part number: 38-129230
• Range: Bilstein B3 OE Replacement
• Location: Rear axle
• Manufacturer: Bilstein
• EAN: 4025258566111
• UPC: 651860566115

Search terms shoppers use

E46 back axle spring, BMW 3 Series stock height rear spring, BMW E46 standard height suspension coil, E46 replacement rear coil, BMW 3er rear spring 1998-2007, E46 saloon back spring, E46 coupe back spring, E46 cabrio rear suspension coil, E46 touring rear spring, Bilstein B3 38-129230 spring, factory spec rear spring for BMW E46.