MMR Oil Thermostat Lid And Caps - N54/N55/S55

Premium CNC Billet Oil Stat Cover and Cap Set for BMW N54, N55 and S55

Give your under-bonnet area a clean, motorsport-inspired look with this precision-machined oil stat lid and matching caps. Crafted in the UK from T6061 billet aluminium and finished in durable anodising, this upgrade replaces the factory oil housing top with a high-quality piece that looks as good as it fits.

Designed for BMW turbo straight-six platforms running N54, N55 and S55 engines, this direct-fit alloy set delivers a tight, rattle-free fit and a premium aesthetic that elevates any build. Our team has installed these on customer cars and the feedback has been excellent for both presentation and fitment.

Why enthusiasts choose this upgrade

• CNC precision from T6061 billet aluminium for strength and a crisp, high-end finish
• Direct replacement for the factory oil housing lid and caps with no cutting or modification
• Anodised surface for enhanced corrosion resistance and long-term appearance
• Optional extra piece with 1/8 NPT thread for easy addition of an oil pressure sender or oil temperature gauge
• Quick, straightforward install using basic hand tools
• Transforms the engine bay with a clean, performance look that complements other hardware

Ideal for

Owners seeking a smart engine bay refresh, BMW tuning projects, show cars, track day builds and anyone wanting a quality alloy oil housing lid and cap set for N54, N55 or S55 powered cars including many 1 Series, 2 Series, 3 Series, 4 Series and M models with these engines.

Add sensors with ease

Select the optional 1/8 NPT port version from the drop-down if you plan to run an aftermarket oil temperature or oil pressure gauge. This makes plumbing in a sender simple and tidy without extra adaptors.

Fitting service

Prefer professional installation? Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Notes

• Exposing anodised aluminium to excessive heat for prolonged periods can affect the finish. This is a characteristic of anodised products.
• Please ensure you select the version with 1/8 NPT provision if you require a sensor port.

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