What does the BMW magnetic oil sump drain plug actually do?

The BMW magnetic oil sump drain plug uses a high-strength magnetic tip to capture fine ferrous particles that wear off internal engine components such as crankshaft bearings and cam caps during normal operation. Without it, those particles remain suspended in the engine oil and continue circulating, accelerating wear on the very surfaces they pass over. Capturing them at the drain plug helps keep the oil cleaner and lubrication more effective between services.

Is this part of the MMX B58 oil filter kit, or a separate purchase?

This magnetic drain plug is available individually and is also one of three components in the MMX Lifetime Oil-Change Service Kit for B58 engines, alongside the lifetime oil filter and billet housing cap. Buyers with a B58 can purchase it standalone or as part of that bundle; the plug itself is universal across B, N, and S-series engines beyond just the B58.

How do I know if my engine uses the M12x1.5 thread?

The M12x1.5 thread covers the vast majority of B-series, N-series, and S-series BMW engines, as confirmed in the Applications list above. If your specific model or engine code is not listed, or you are unsure, contact MMX or Bulletproof Automotive directly to confirm fitment before ordering.

Why are sealing washers included with the plug?

Five replacement sealing washers are supplied because the washer should be replaced at every oil service to maintain a reliable seal, the same single-use principle that applies to any crush-type drain plug washer. Supplying five means several future services are already covered without needing to source replacement washers separately.

Is this worth fitting on a non-performance, daily-driven BMW?

Yes. While the benefit is most pronounced on high-performance or heavily driven engines where wear accumulates faster, internal wear and the resulting metal particulate occur in any engine through normal operation. The BMW magnetic oil sump drain plug is a low-cost, preventative upgrade suited to any B, N, or S-series BMW, not just performance applications.

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Description

MMX Magnetic Oil Sump Drain Plug for BMW Vehicles with B, N, or S-Series Engines (M12x1.5)

BMW magnetic oil sump drain plug from MMX Performance is a smart, effective upgrade for any BMW running a B, N, or S-series engine, designed to reduce long-term internal wear by capturing ferrous metal particles suspended in the engine oil. As crankshaft bearings, cam caps, and other internal surfaces wear during normal operation, microscopic metal debris enters the oil and continues circulating through the lubrication system, accelerating wear on the very components it passes through. The BMW magnetic oil sump drain plug pulls that debris out of circulation with a high-strength magnet at the plug’s tip, helping keep the oil cleaner and lubrication more effective with every mile driven. Machined from lightweight T6-6061 aluminum and finished in MMX’s signature gloss black anodizing, the plug is a full OE replacement that drops directly into the M12x1.5 thread found across the vast majority of B, N, and S-series engines, with no modification required. Supplied with five replacement sealing washers, the BMW magnetic oil sump drain plug is a simple, low-cost upgrade that delivers long-term peace of mind at every oil change, particularly valuable for high-performance or heavily driven engines where internal wear accumulates faster.

Features

High-strength magnetic tip captures ferrous metal particles suspended in engine oil
Reduces ongoing wear to bearings, cam caps, and other oil-fed components
Crafted from lightweight T6-6061 aluminum
Anodized in MMX signature gloss black finish
M12x1.5 thread pitch
Full OE plug replacement
Supplied with 5 replacement sealing washers

Applications

BMW 135i: E82, E88 | 2008-2013
BMW 1M Coupe: E82 | 2011
BMW 330i: G20, G21 | 2019-present
BMW 335i: E90, E91, E92, E93, F30, F31, F34 | 2006-2015
BMW 340i: F30, F31, F34 | 2016-2019
BMW 430i: G22, G23, G26 | 2021-present
BMW 435i: F32, F33, F36 | 2013-2016
BMW 440i: F32, F33, F36 | 2016-2020
BMW 530i: G30, G31 | 2017-2023
BMW 535i: E60, E61, F10, F11 | 2007-2017
BMW 540i: G30, G31, G60, G61 | 2017-present
BMW 640i: F06, F12, F13, G32 | 2011-2023
BMW 740i: F01, F02, G11, G12, G70 | 2009-present
BMW 750i: F01, F02, G11, G12 | 2009-2022
BMW 840i: G14, G15, G16 | 2019-present
BMW M135i: F20, F21 | 2012-2016
BMW M140i: F20, F21 | 2016-2019
BMW M2: F87, G87 | 2016-2018, 2023-present
BMW M235i: F22, F23 | 2014-2016
BMW M240i: F22, F23, G42 | 2016-present
BMW M2 Competition: F87 | 2018-2021
BMW M3: F80, G80, G81 | 2014-2018, 2021-present
BMW M3 Competition: F80, G80, G81 | 2016-2018, 2021-present
BMW M4: F82, F83, G82, G83 | 2014-present
BMW M4 Competition: F82, F83, G82, G83 | 2017-present
BMW M5: F10, F90 | 2011-2016, 2018-2023
BMW M5 Competition: F10, F90 | 2014-2016, 2018-2023
BMW M8: F91, F92, F93 | 2019-present
BMW M8 Competition: F91, F92, F93 | 2019-present
BMW X3 M: F97 | 2019-2023
BMW X3 M40i: G01 | 2017-present
BMW X3 M Competition: F97 | 2023
BMW X3 xDrive35i: F25 | 2011-2017
BMW X4 M: F98 | 2019-2023
BMW X4 M40i: G02 | 2018-present
BMW X4 M Competition: F98 | 2019-2023
BMW X4 xDrive35i: F26 | 2014-2018
BMW X5 M: E70, F85, F95 | 2010-2013, 2015-2018, 2020-2023
BMW X5 M Competition: E70, F85, F95 | 2010-2013, 2015-2018, 2020-present
BMW X5 xDrive40i: G05 | 2019-present
BMW X6 M: E71, F86, F96 | 2010-2023
BMW X6 M Competition: E71, F86, F96 | 2009-2023
BMW X6 xDrive40i: G06 | 2020-present
BMW X7 xDrive40i: G07 | 2019-present
BMW Z3 M: E36/7, E36/8 | 2001-2002
BMW Z4 M: E85, E86 | 2006-2008
BMW Z4 M40i: G29 | 2019-present
BMW Z4 sDrive35i: E89 | 2009-2016
BMW Z4 sDrive35is: E89 | 2011-2016

Notes

Fits oil pans with M12x1.5 thread
Fits all B-series, N-series, and/or S-series engines including N55, S55, and B58
Contact us to confirm fitment for your vehicle
Sold as a single drain plug

Frequently Asked Questions

What does the BMW magnetic oil sump drain plug actually do? The BMW magnetic oil sump drain plug uses a high-strength magnetic tip to capture fine ferrous particles that wear off internal engine components such as crankshaft bearings and cam caps during normal operation. Without it, those particles remain suspended in the engine oil and continue circulating, accelerating wear on the very surfaces they pass over. Capturing them at the drain plug helps keep the oil cleaner and lubrication more effective between services.
Is this part of the MMX B58 oil filter kit, or a separate purchase? This magnetic drain plug is available individually and is also one of three components in the MMX Lifetime Oil-Change Service Kit for B58 engines, alongside the lifetime oil filter and billet housing cap. Buyers with a B58 can purchase it standalone or as part of that bundle; the plug itself is universal across B, N, and S-series engines beyond just the B58.
How do I know if my engine uses the M12x1.5 thread? The M12x1.5 thread covers the vast majority of B-series, N-series, and S-series BMW engines, as confirmed in the Applications list above. If your specific model or engine code is not listed, or you are unsure, contact MMX or Bulletproof Automotive directly to confirm fitment before ordering.
Why are sealing washers included with the plug? Five replacement sealing washers are supplied because the washer should be replaced at every oil service to maintain a reliable seal, the same single-use principle that applies to any crush-type drain plug washer. Supplying five means several future services are already covered without needing to source replacement washers separately.
Is this worth fitting on a non-performance, daily-driven BMW? Yes. While the benefit is most pronounced on high-performance or heavily driven engines where wear accumulates faster, internal wear and the resulting metal particulate occur in any engine through normal operation. The BMW magnetic oil sump drain plug is a low-cost, preventative upgrade suited to any B, N, or S-series BMW, not just performance applications.

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 Magnetic Oil Sump Drain Plug for BMW Vehicles (with B, N, or S-Series engine) [MMR03-0504]

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MMX Magnetic Oil Sump Drain Plug for BMW Vehicles with B, N, or S-Series Engines (M12x1.5)

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

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