Genuine OEM BMW Strut Upper Spring Seat Insulator + Dust Boot/Gaiter 31306791712 – Coil Spring Perch Pad, Shock Rod Cover – F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 F87 F80 F82 F83 (1/2/3

BMW Strut Upper Insulator with Protective Sleeve - Part Number 31306791712

Restore that tight, quiet BMW feel with this genuine BMW upper perch rubber insulator complete with protective sleeve for the shock rod. This factory BMW component cushions the coil, reduces NVH, and keeps grit off the shock absorber shaft, helping your dampers last longer and perform as intended on both daily drivers and performance builds.

Ideal when refreshing shocks, fitting coilovers or lowering springs, this direct-fit piece replaces tired rubber that can cause creaks, knocks and vibration. Expect crisp steering response, fewer unwanted noises and a smoother, more settled ride. As a genuine BMW part you get exact fitment, correct materials and proper durability for F2x and F3x chassis cars.

Why it belongs on your BMW

• Original BMW part for precise fit and long-term reliability
• Cuts cabin noise and harshness by isolating the coil from the body
• Protective sleeve shields the shock rod from dust and debris to reduce wear
• Perfect partner for new shock absorbers, sport springs and coilover kits
• Maintains factory geometry and steering feel
• Durable rubber compound engineered for BMW loads
• Direct replacement using part number 31306791712

We use this part in-house and on customer cars. Feedback is consistently positive for fitment quality, noise reduction and ride refinement.

Models covered

Suits a wide range of BMW 1 Series, 2 Series, 3 Series and 4 Series on the F platform, including performance variants:

• 1 Series F20 F21
• 2 Series F22 F23 and F87 M2
• 3 Series F30 F31 F34 and F80 M3
• 4 Series F32 F33 F36 and F82 F83 M4

Popular fitments include 118i 120d 125i, 220i 230i 235i, 320d 330i 335i, 420i 430i 435i, plus M2 M3 M4 across the above platforms. If you are unsure, we will confirm compatibility before dispatch.

Free fitment check

Add your UK registration number or the last 7 digits of your VIN at checkout and we will verify this part suits your exact vehicle prior to shipping.

Professional fitting

Installation by professionals is recommended. MJ Modifications offers fitting at our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

Part number

31306791712

Manufacturer

BMW genuine part - original equipment quality

Warranty

Two years manufacturer warranty for UK customers and one year for international customers when a VIN is provided at checkout on compatible vehicles.

Search terms customers use

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