Turner Motorsport Aluminium Undertray Underbody Skid Plate & Sump Guard - Milled Finish - BMW F8x M3/M4 (F80 M3, F82/F83 M4) S55 Oil Cooler Protector Belly Pan Engine Splash Shield Bash Plate

Heavy-duty undertray and oil cooler guard for BMW F8x platform

Protect the low-mounted heat exchanger on your S55-powered BMW with this premium aluminium underbody shield in a clean milled finish. The standard plastic splash panel offers little defence against stones, branches, speed humps and road debris. One strike can rupture the cooler and dump oil, risking serious engine damage. This upgraded front undertray gives you the confidence to enjoy fast-road and track use without worrying about unexpected impacts.

Engineered for the F80 M3 saloon, F82 M4 coupe and F83 M4 convertible, this robust front belly pan replacement combines strength, light weight and factory-style fit. It reuses the original fixing points for a simple bolt-on installation and preserves airflow to the heat exchanger just like the OE panel.

Why enthusiasts choose this aluminium underbody shield

• Serious protection for the S55 oil cooler and lower engine area from stones, kerbs, ice chunks and loose cargo on the motorway
• Maintains factory aerodynamics and cooling characteristics with a smart trim-seal interface around the cooler core
• 8-gauge 5052 aluminium construction for excellent impact resistance without excessive weight
• Approx. 5 lb total weight, only about 3 lb more than the plastic original yet far stronger
• Milled finish looks purposeful and is ideal for both daily-driven and track-day cars
• Direct fit using OE mounting points and hardware - no cutting or drilling required
• Among the lightest metal alternatives available for the F8x chassis
• US-made quality backed by our own road and workshop experience

Fitment and compatibility

• BMW F80 M3 - S55 3.0-litre
• BMW F82 M4 - S55 3.0-litre
• BMW F83 M4 - S55 3.0-litre

Construction and spec

• Material: 8-gauge 5052 aluminium
• Finish: Milled
• Weight: approx. 5 lb total
• Mounting: reuses factory fixings and locations
• Replacement hardware if required: BMW 07149126886 x11

Real-world results

We run this guard on our own builds and customer cars. Feedback is consistently positive: quieter underbody, proper OE-style fit and peace of mind against costly cooler damage. It is a must-have upgrade for any lowered F8x, spirited road driving or track work.

Common search terms

BMW M3 undertray, M4 sump guard, F80 engine splash guard, F82 undercar shield, F83 front undertray, S55 oil cooler protector, aluminium bash plate, BMW front underbody plate, belly pan upgrade, BMW performance parts UK.

Professional fitting available

Want it installed correctly the first time? Book professional fitment with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.