# BMW MMR Aluminum Tank Cap - Mini Engine B58, N55, S54, S55, S63

> MMX Performance Oil Cap MMR03-0102-BL for compatible BMW and MINI models. Black anodized 6061 aluminum, spring-loaded closure, and reusable original gasket.

- URL: https://www.gt2i.ch/en/oil-system-accessories/217306-bmw-mmr-aluminum-tank-cap-mini-engine-b58-n55-s54-s55-s63-3666618840819.html
- Reference: MMR03-0102-BL
- Price: CHF 116.00
- Brand: MMX Performance - MMR
- Availability: out of stock

## Description

The MMX Performance tank cap for BMW and MINI replaces the original compatible cap with a CNC-machined, solid 6061 aluminum part. It is compatible with BMW B58, N54, N55, S54, S55, and S63 engines, as well as MINI B38, B48, B37, and B47 engines, provided the mounting of the original plug is verified.
Its glossy black anodized finish enhances the appearance of the engine compartment. Its grip surface makes it easy to handle when topping off engine oil, while its internal spring mechanism ensures a secure lock when closed.
This plug fully replaces the original part—it is not merely a decorative cover. Its design allows for orientation at 0° or 90° to align the logo with the engine’s longitudinal or transverse layout.
Features of the MMX Performance MMR03-0102-BL plug
Brand: MMX Performance.
PartNumber: MMR03-0102-BL.
Function: Engine oil tank cap.
Application: BMW and MINI models equipped with a compatible mounting system.
Material: 6061 aluminum.
Manufacturing: 5-axis CNC machining from solid stock.
Finish: Polished, then glossy black anodized.
Closure: Internal spring-loaded mechanism.
Orientation: 0° or 90°.
Corresponding origin reference number: 11128655331.
Gasket: Original plug gasket to be salvaged and reused.
Packaging: sold individually.
Compatible BMW vehicles and engine types
Applications include, in particular, the models listed below, with the original plug part number 11128655331 or confirmed mounting:
BMW 1 Series 135i (E82/E88): N54 or N55 engines, depending on the version.
BMW 1 Series M Coupe (E82): N54 engine.
BMW 1 Series M135i (F20/F21): N55 engine.
BMW 1 Series M140i (F20/F21): B58 engine.
BMW 2 Series M235i (F22/F23): N55 engine.
BMW 2 Series M240i (F22/F23): B58 engine.
BMW 3 Series 335i (E90/E91/E92/E93): N54 or N55 engines, depending on the version.
BMW 3 Series 335i (F30/F31/F34): N55 engine.
BMW 3 Series 340i (F30/F31/F34): B58 engine.
BMW 4 Series 435i (F32/F33/F36): N55 engine.
BMW 4 Series 440i (F32/F33/F36): B58 engine.
BMW M2 (F87): N55 engine.
BMW M2 Competition and M2 CS (F87): S55 engine.
BMW M3 (E46): S54 engine, with compatible plug mounting.
BMW M3 (F80): S55 engine.
BMW M4 (F82/F83), including CS and GTS versions: S55 engine.
BMW M5 (F10/F90): S63 engine.
Compatible MINI vehicles and engine types
For the following models, check for the presence of the original plug with reference number 11128655331:
MINI 3-door (F56) and 5-door (F55): B38 and B48 petrol engines, B37 and B47 diesel engines, depending on the version.
MINI Convertible (F57): B38 and B48 petrol engines, B37 and B47 diesel engines, depending on the version.
MINI Clubman (F54): B38 and B48 petrol engines, B37 and B47 diesel engines, depending on the model.
MINI Countryman (F60): B38 and B48 petrol engines, B47 diesel engine, depending on the version.
Not compatible with S58 and B48E engines. Some model variants use a different plug: check the mounting before ordering.
Mounting and Checks Before Ordering
Compare the underside of your original plug with the product images and verify its part number. The vehicle name or engine family alone is not sufficient to confirm compatibility.
Retrieve the gasket from the original plug and check its condition before reinstalling it. Verify its positioning and ensure the plug snaps into place completely when closed.
Prolonged exposure to excessive heat may alter the appearance of the anodized finish.
Key Features of the MMX Performance Oil Cap
A complete replacement for the original compatible plug.
Machined from solid 6061 aluminum with a glossy black anodized finish.
Easy to grip for maintenance operations.
Spring-loaded latch for a secure seal.
Can beoriented at 0° or 90° to adjust the logo’s orientation.

## Features

- Product type: Oil cap
- Main material: Aluminum