What is the MMX G-Series billet washer cap?

The MMX G-Series billet washer cap is a CNC-machined billet aluminum washer fluid filler cap that replaces the plastic factory cap on G-Series BMW M cars, adding a finished billet detail to the engine bay.

Which cars does it fit?

The MMX Performance billet washer fluid filler cap fits the G-Series M2 (G87), M3 (G80), and M4 (G82 and G83). It threads onto the factory washer fluid filler neck used across these models.

Is it hard to install?

No. The MMX billet washer cap threads onto the factory washer fluid neck by hand in seconds with no tools, making it one of the easiest engine bay upgrades available.

It is sold as a single billet washer fluid filler cap, which is all that is needed to replace the one factory washer cap on your car.

Is the fit secure and sealed?

Yes. The MMX billet washer cap is machined to thread precisely onto the factory neck, providing a secure, sealed fit that keeps washer fluid contained just like the OEM cap.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

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Description

MMX Performance Billet Washer Fluid Filler Cap for G-Series BMW M2, M3, and M4

The MMX G-Series billet washer cap replaces the plastic factory washer fluid filler cap on your G-Series BMW M2, M3, or M4 with a CNC-machined billet aluminum cap that dresses up the engine bay. It threads directly onto the factory washer fluid neck for a precise, secure fit and adds a finished, purposeful detail every time you open the hood. A simple, high-impact billet upgrade that takes seconds to install. Sold as a single billet washer fluid filler cap.

Features

CNC-machined billet aluminum construction
Direct threaded replacement for the plastic factory cap
Finishes the engine bay with a purposeful billet detail
Precise, secure fit on the factory washer fluid neck
Installs in seconds with no tools

Specifications

Material: CNC billet aluminum
Fitment: Factory washer fluid filler neck
Installation: Threaded, tool-free
Sold as: Single billet washer fluid filler cap

Applications

BMW M2 (G87): 2023-present
BMW M3 (G80): 2021-present
BMW M4 (G82 / G83): 2021-present

Notes

Confirm your factory cap is the current G-Series style before ordering. Sold as a single billet washer fluid filler cap.

Frequently Asked Questions

What is the MMX G-Series billet washer cap? The MMX G-Series billet washer cap is a CNC-machined billet aluminum washer fluid filler cap that replaces the plastic factory cap on G-Series BMW M cars, adding a finished billet detail to the engine bay.
Which cars does it fit? The MMX Performance billet washer fluid filler cap fits the G-Series M2 (G87), M3 (G80), and M4 (G82 and G83). It threads onto the factory washer fluid filler neck used across these models.
Is it hard to install? No. The MMX billet washer cap threads onto the factory washer fluid neck by hand in seconds with no tools, making it one of the easiest engine bay upgrades available.
How is it sold? It is sold as a single billet washer fluid filler cap, which is all that is needed to replace the one factory washer cap on your car.
Is the fit secure and sealed? Yes. The MMX billet washer cap is machined to thread precisely onto the factory neck, providing a secure, sealed fit that keeps washer fluid contained just like the OEM cap.

About MMX Performance

MMX Performance builds precision billet aluminum suspension and hardware upgrades for modern BMW M vehicles. Each component is machined in-house from billet 6061-T6 aluminum and engineered to remove the compliance and compromises of factory rubber parts, giving drivers sharper response and more consistent performance on the street and the track.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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MMX Performance Billet Washer Fluid Filler Cap for G-Series BMW M2, M3, and M4

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MMX Performance Billet Washer Fluid Filler Cap for G-Series BMW M2, M3, and M4

Features

Specifications

Applications

Notes

Frequently Asked Questions

About MMX Performance

Reviews