MMR Performance Baffled Oil Sump / Oil Pan Baffle Insert for BMW N55 F20 F21 F22 F23 F30 F31 F32 F33 M135i, M235i, 335i, 435i (RWD Only) Bolt-In Sump Baffle to Prevent Oil Starvation

BMW N55 Oil Control Plate Insert for F20 F21 F22 F23 F30 F31 F32 F33 RWD M135i M235i 335i 435i

Protect your N55 under hard braking and high-g cornering with this oil control plate insert. Designed to keep lubricant around the pick-up during aggressive driving, this anti-surge solution stabilises pressure and helps safeguard bearings and turbo components on road and track. If you enjoy track days, fast road blasts or spirited B-road runs, this is a must-have reliability upgrade.

We have run this upgrade on our own N55 builds and customer cars with excellent results. Drivers report greater confidence, consistent pressure readings and reduced risk of oil aeration when pushing on.

How it works

During heavy deceleration and lateral load, oil can slosh away from the pick-up, causing pressure dips that hurt longevity. This insert uses carefully positioned internal baffles and seven trap doors to keep the pick-up continuously fed, improving lubrication control in braking zones, long sweepers and rapid direction changes.

Key advantages

• Seven directional gates help retain oil around the pick-up during acceleration, braking and cornering.
• Improves pressure stability to reduce the chance of starvation on circuit and fast road use.
• Anodised T-6061 aluminium for strength, light weight and corrosion resistance.
• Simple bolt-in installation with no welding required.
• Vehicle-specific design for the N55 F-series platform for a precise, rattle-free fit.
• Ideal for track day cars, time-attack builds and performance road applications.

Compatibility

• BMW 1 Series F20 F21 M135i N55
• BMW 2 Series F22 F23 M235i N55
• BMW 3 Series F30 F31 335i N55
• BMW 4 Series F32 F33 435i N55

Notes: F-series rear-wheel drive only. Not suitable for xDrive.

Why enthusiasts choose this upgrade

• Prevents pressure drop under g loads for greater engine protection.
• Keeps lubricant where it is needed to support bearing and turbo health.
• Track-proven oil management for N55-powered F2x and F3x models.

Fitting service

Professional installation is recommended. Prefer us to handle it for you? MJ Modifications in Warwickshire offers fitting. Request a quote at info@mjmodifications.co.uk.

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Add proven oil management to your N55 and drive harder with confidence.