How do I choose the right cap?

Select the option that matches your BMW's refrigerant system: the Grey cap suits R1234YF systems and the Black cap suits R134A systems. Matching the refrigerant type ensures the MMX AC service caps fit your factory ports correctly.

Are they hard to install?

No. The MMX AC service caps thread onto the factory service ports by hand in seconds with no tools, making them one of the simplest engine bay upgrades.

Do they affect the AC system?

No. The MMX billet AC service caps are cosmetic covers for the service ports and do not change how the air conditioning system operates; they simply replace the factory plastic caps with billet aluminum.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

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Description

MMX Performance Billet Air Conditioning Service Port Caps for BMW

The MMX billet AC service caps replace the plastic factory air conditioning service port caps under your BMW’s hood with CNC-machined billet aluminum caps for a cleaner, more finished engine bay. Choose the version that matches your car’s refrigerant system so the fitment is exact, then thread them on in seconds. A small billet detail that elevates the look every time you pop the hood. Choose the cap that matches your factory refrigerant system.

Features

CNC-machined billet aluminum air conditioning service port caps
Direct threaded replacement for the plastic factory caps
Available to match R1234YF or R134A refrigerant systems
Finishes the engine bay with a subtle billet detail
Tool-free installation in seconds

Specifications

Material: CNC billet aluminum
Fitment: Factory AC service ports
Options: Grey R1234YF or Black R134A
Sold as: Air conditioning service port cap(s)

Applications

BMW models with factory R1234YF or R134A air conditioning service ports

Notes

Confirm whether your BMW uses R1234YF or R134A refrigerant before selecting a cap option. Choose the cap version that matches your factory refrigerant system.

Frequently Asked Questions

What are the MMX billet AC service caps? The MMX billet AC service caps are CNC-machined billet aluminum caps that replace the plastic factory air conditioning service port caps on BMW models, adding a clean billet detail to the engine bay.
How do I choose the right cap? Select the option that matches your BMW’s refrigerant system: the Grey cap suits R1234YF systems and the Black cap suits R134A systems. Matching the refrigerant type ensures the MMX AC service caps fit your factory ports correctly.
How are they sold? The MMX billet AC service caps are ordered by the option that matches your factory refrigerant system. Choose the correct version for your car at checkout.
Are they hard to install? No. The MMX AC service caps thread onto the factory service ports by hand in seconds with no tools, making them one of the simplest engine bay upgrades.
Do they affect the AC system? No. The MMX billet AC service caps are cosmetic covers for the service ports and do not change how the air conditioning system operates; they simply replace the factory plastic caps with billet aluminum.

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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