Genuine BMW F8X M3 M4 Front Left Strut/Shock Tower Top Mount Reinforcement Plate – Suspension Turret/Dome Upper Damper Mount Support, LH Nearside – Fits F80 F82 F83, LCI & Pre-LCI – OEM 31302361991

BMW M3 M4 F8X Front Nearside Suspension Turret Reinforcement – LCI Ready – OEM 31302361991

Safeguard the upper damper mount on your F80 M3, F82 M4 and F83 M4 with this factory BMW front left reinforcement plate. Purpose built for the F8X platform, this genuine component spreads load across the suspension turret to help prevent deformation, improve durability and keep alignment true on fast road, pothole ridden UK commutes and track days. Fully compatible with pre LCI and LCI models. Part number 31302361991.

Expect a perfect factory fit and finish. This left hand side plate installs under the upper mount, adding extra support without introducing noise or harshness. Ideal when refreshing suspension, fitting lowering springs or coilovers, or if you want extra protection before your next alignment.

Why choose this reinforcement

• Original BMW part for the best fit, materials and corrosion protection
• Distributes suspension loads around the turret to reduce the risk of dome distortion
• Great upgrade for cars on British roads, spirited driving and occasional circuit use
• Direct bolt on with standard hardware, no modification required
• Works with OE dampers, uprated springs and most performance setups
• Left hand front only, designed specifically for the nearside on F8X chassis

Part number

31302361991

In the box

• 1 x BMW Front Left Suspension Turret Reinforcement Plate

Vehicle compatibility

• BMW F80 M3 including LCI
• BMW F82 M4 including LCI
• BMW F83 M4 Convertible including LCI

Fitment confirmation

We will verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout for a quick compatibility check.

Professional fitting

Installation is straightforward for a trained technician. For fitting, choose MJ Modifications in Warwickshire. Request a quote via info@mjmodifications.co.uk.

Proven by us

We run these plates on our own builds and customer cars. Feedback has been superb, with owners praising the extra peace of mind when pairing with new suspension or after an alignment.

Warranty

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

Manufactured by

BMW – Original Equipment

Common search terms

F80 M3 front nearside suspension turret plate, F82 M4 damper top reinforcement left, F83 M4 convertible upper mount support left, F8X chassis turret strengthening plate LCI, BMW 31302361991 OEM reinforcement, M3 M4 left hand front damper mount plate, F80 F82 F83 suspension top reinforcement nearside, BMW upper mount reinforcement disc front left.