BMW F2x Engine Undertray Bracket Mount – Belly Pan/Splash

BMW F2x Lower Cover Mounting Adapter - OE M Adapter - P/N 51758050730

Secure the lower engine cover on your F2x like the factory intended. This original BMW M adapter is the correct mounting piece for the front floor panel system on selected 1 Series and 2 Series models, delivering precise alignment, quietness and durability mile after mile. If your splash tray is missing a support, sagging or you are adding the full aero panel setup, this is the proper OE solution that fits right the first time.

We have installed this adapter across numerous F20, F21 and F22 builds at MJ Modifications and customer feedback has been consistently positive for fit, finish and long term reliability. It is a simple, effective upgrade that keeps road grime and spray away from key components while helping maintain smooth airflow under the car.

Key reasons to choose this OE adapter

• Original BMW component for correct geometry and secure retention
• Designed for the factory lower engine cover system and aero floor panel
• Helps reduce noise, vibration and harshness by keeping the panel stable
• Supports underbody airflow for refinement and efficiency
• Direct-fit part with no guesswork or bodges

Compatibility

Suitable for selected BMW F2x chassis:

• 1 Series hatchback F20 and F21 including LCI variants
  • Typical engines and trims include 114d, 114i, 116d, 116i, 118d, 118i, 120i, 120d xDrive, 125i, 125d, M135i, M135i xDrive
• 2 Series coupe F22 including LCI variants
  • Common applications include 218d and 220d

Unsure this is right for your car? Add your UK registration or last 7 of the VIN at checkout and we will confirm compatibility before dispatch.

Part number

51758050730

What this part does

This adapter is the dedicated mounting piece for the BMW engine encapsulation system on F2x cars. It supports the lower shield often referred to as the lower splash tray, belly cover, sump guard, front floor panel or under shield, ensuring the panel sits tight against the chassis for optimal protection and aerodynamics.

Fitting and installation

Professional installation recommended. MJ Modifications offers fitting at our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

Why buy from MJ Modifications

• We supply authentic BMW OE components for the F2x platform
• Proven in-house on customer cars for perfect alignment and retention
• Friendly advice and a quick fitment check using your registration or VIN

Popular search terms

F20 lower cover bracket, F21 splash tray mount, F22 floor shield retainer, M135i tray support, 120i under cover fixing, 125i engine guard holder, 220d sump cover mount, F2x undertray hardware, BMW OE lower panel holder, front under shield support, engine encapsulation adapter F2x, BMW 1 Series 2 Series lower panel mount.