01
Real experience
We test before we recommend.
PRODUCT DESCRIPTION
MMR Billet Oil Filler Cap for BMW | MINI
The MMR Performance oil filler cap, made from machined aluminum for BMW (with original part number 11128655331), makes oil top-ups a pleasure. Designed to instantly enhance the aesthetic of your BMW's engine bay, with a glossy black anodized finish. This cap is compatible with all BMW B38, B48, B37, B47, B58, N54, N55, S54, S55, and S63 engines (original part number 11128655331).
Meticulously machined from a solid billet using the latest 5-axis CNC technology, polished, and bright anodized to maintain its beauty year after year.
It joins our range of engine accessories, offering a complete transformation of the engine bay. Our design allows the cap to be installed in either a 0 or 90-degree orientation, keeping it aligned with longitudinal or transverse engine layouts.
You'll never again have to worry about whether you tightened the oil cap properly, as our internally sprung cap clicks firmly shut and locks into place. This cap will ensure you never again have the problem of oil leaks from the standard cap; a common issue on many of these engines due to their deterioration over time and mileage.
Each cap is manufactured from a solid billet of aerospace-grade 6061 aluminum. It is meticulously machined from this billet using the latest 5-axis CNC technology, before being polished and anodized with a bright finish to maintain its beauty year after year.
The carefully considered design provides ample finger grip, making installation and engine oil filling easy.
Our MMR cap is compatible with all engines with a rounded filler cap. Please compare the underside of your original oil cap with the product image to confirm (OE part number 11128655331).
Features
Made from precision-machined solid aluminum.
Ensures you'll never again have problems with oil leaks from the standard cap.
Complete replacement for the original cap, not just a glued-on cover.
Joins our range of engine customization products for a complete engine bay transformation.
Glossy anodized finish to maintain its beauty year after year.
Additional Information
Please note that you will need to reuse your original oil filler cap seal.
Please note that if the part is exposed to excessive heat for prolonged periods, this may affect the overall finish, which is inevitable with anodized aluminum products.
Installation Information
Our cap is compatible with all BMW B38, B48, B37, B47, B58, N54, N55, S54, S55, and S63 engines (Original Part Number: 11128655331).
Vehicle Compatibility
Model Variant
The cap is compatible with all BMWs (Original Part Number: 11128655331):
B38
B48
B37
B47
B58
N54
N55
S54
S55
S63
The cap is compatible with all MINIs (Original Part Number: 11128655331):
B38
B48
B37
B47
This cap is not compatible with the newer B48E engines.










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
01
We test before we recommend.
02
We help you choose the right part.
03
Only trusted manufacturers.
04
Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.