Why does the BMW B58 oil filter O-ring need replacing at every service?

The BMW B58 oil filter O-ring compresses under pressure during each service interval and takes a set in that compressed position. Reusing the same O-rings risks an imperfect seal that can allow oil to seep past the housing, particularly relevant on B58 platforms where oil filter housing sealing failures are a documented issue. Replacing all four O-rings at every oil change or filter cleaning eliminates that risk entirely.

Is this BMW B58 oil filter O-ring kit compatible with the OEM filter?

No. This O-ring service kit is sized and designed exclusively for the MMX billet oil filter housing cap and MMX reusable oil filter system. It is not compatible with the OEM BMW oil filter or any other aftermarket filter brand. Only use this kit with the MMX system.

How many O-rings are in the kit and what do they seal?

The kit includes four O-rings — the complete set required to fully service the MMX oil filter and billet housing cap. All four should be replaced together at every service interval to maintain uniform sealing across the entire system.

Does this kit fit B57 diesel engines as well as B58 petrol engines?

Yes. The BMW B58 oil filter O-ring service kit is compatible with both the B58 petrol and B57 diesel 3.0L I6 engines. The MMX oil filter system uses the same housing and O-ring specification across both engine families. The full list of compatible diesel and petrol variants is in the Applications section above.

How do I install the replacement O-rings?

Remove the old O-rings from their grooves on the MMX housing and filter, clean the grooves, and seat the new O-rings fully and evenly with no twisting. Reinstall the filter and housing as normal. No additional tools are required beyond those used for the oil change or filter cleaning itself.

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BP PRICING DIFFERENCE

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Description

MMX Oil Filter and Billet Housing Cap O-Ring Service Kit for BMW B57 and B58 Engines

BMW B58 oil filter O-ring service kit from MMX Performance supplies the four replacement O-rings required to properly service the MMX billet oil filter housing cap and reusable MMX oil filter on B57 and B58-powered BMW models covering the M240i, M340i, M440i, 340i, 440i, 540i, 640i, 740i, 840i, Z4 M40i, and a full range of B57 diesel variants from the 330d through to the X7 xDrive30d. The BMW B58 oil filter O-ring service kit does not include the filter or housing; it is for existing MMX filter system owners who need replacement seals for ongoing servicing. The O-rings are identical to those originally supplied with the MMX system, ensuring a direct-fit replacement each time. MMX recommends replacing all four O-rings at every oil change or filter cleaning to maintain optimal seal integrity and prevent oil leaks. This best practice applies to any precision sealing system where an O-ring takes a set under compression over one service interval. This kit also addresses the well-documented oil filter collapse issue on B58 platforms by ensuring the MMX filter housing maintains a proper seal on every service.

Features

Four precision O-rings to fully service the MMX billet oil filter housing cap and reusable filter
Identical to the O-rings originally supplied with the MMX oil filter system
Maintains seal integrity and prevents oil leaks at every service interval
Addresses the well-documented B58 oil filter collapse risk
Direct replacement; straightforward installation
Compatible with B57 and B58 3.0L I6 engines

Applications

BMW 330d: G20, G21 | 2019-present
BMW 340d: G20, G21 | 2020-present
BMW 340i: F30, F31, F34 | 2015-2019
BMW 440i: F32, F33, F36 | 2016-2020
BMW 530d: G30, G31 | 2017-2023
BMW 540d: G30, G31 | 2017-2020
BMW 540i: G30, G31 | 2017-2023
BMW 630d: G32 | 2017-2020
BMW 640i: G32 | 2017-2023
BMW 730d: G11, G12 | 2016-2022
BMW 740d: G11, G12 | 2016-2020
BMW 740i: G11, G12 | 2016-2022
BMW 840d: G14, G15, G16 | 2019-2023
BMW 840i: G14, G15, G16 | 2019-present
BMW M240i: F22, F23, G42 | 2016-present
BMW M340i: G20, G21 | 2019-present
BMW M440i: G22, G23, G26 | 2021-present
BMW X3 M40d: G01 | 2019-2024
BMW X3 M40i: G01 | 2018-2024
BMW X3 xDrive30d: G01 | 2018-2024
BMW X4 M40d: G02 | 2019-2024
BMW X4 M40i: G02 | 2018-present
BMW X4 xDrive30d: G02 | 2019-2024
BMW X5 M50d: G05 | 2019-2020
BMW X5 xDrive30d: G05 | 2019-present
BMW X5 xDrive40d: G05 | 2020-present
BMW X5 xDrive40i: G05 | 2019-present
BMW X6 M50d: G06 | 2019-2020
BMW X6 xDrive30d: G06 | 2020-present
BMW X6 xDrive40d: G06 | 2020-present
BMW X6 xDrive40i: G06 | 2020-present
BMW X7 M50d: G07 | 2019-2020
BMW X7 xDrive30d: G07 | 2019-present
BMW X7 xDrive40i: G07 | 2019-present
BMW Z4 M40i: G29 | 2019-present

Notes

For use with the MMX billet oil filter housing cap and MMX reusable oil filter only. Not compatible with OEM oil filters
Billet oil filter housing cap and filter are pictured for reference only; not included with purchase
Sold as a set of 4 O-rings

Frequently Asked Questions

Why does the BMW B58 oil filter O-ring need replacing at every service? The BMW B58 oil filter O-ring compresses under pressure during each service interval and takes a set in that compressed position. Reusing the same O-rings risks an imperfect seal that can allow oil to seep past the housing, particularly relevant on B58 platforms where oil filter housing sealing failures are a documented issue. Replacing all four O-rings at every oil change or filter cleaning eliminates that risk entirely.
Is this BMW B58 oil filter O-ring kit compatible with the OEM filter? No. This O-ring service kit is sized and designed exclusively for the MMX billet oil filter housing cap and MMX reusable oil filter system. It is not compatible with the OEM BMW oil filter or any other aftermarket filter brand. Only use this kit with the MMX system.
How many O-rings are in the kit and what do they seal? The kit includes four O-rings the complete set required to fully service the MMX oil filter and billet housing cap. All four should be replaced together at every service interval to maintain uniform sealing across the entire system.
Does this kit fit B57 diesel engines as well as B58 petrol engines? Yes. The BMW B58 oil filter O-ring service kit is compatible with both the B58 petrol and B57 diesel 3.0L I6 engines. The MMX oil filter system uses the same housing and O-ring specification across both engine families. The full list of compatible diesel and petrol variants is in the Applications section above.
How do I install the replacement O-rings? Remove the old O-rings from their grooves on the MMX housing and filter, clean the grooves, and seat the new O-rings fully and evenly with no twisting. Reinstall the filter and housing as normal. No additional tools are required beyond those used for the oil change or filter cleaning itself.

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

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 Oil Filter & Billet Housing Cap O-Ring Service Kit for BMW Vehicles (with B57 / B58 engines) [MMR17-0000]

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MMX Oil Filter and Billet Housing Cap O-Ring Service Kit for BMW B57 and B58 Engines

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

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