BMW Oil Filter Housing Gasket Leak

By the Radman Auto Repair team, independent auto repair in Etobicoke since 1999 · Updated November 2026

The oil filter housing gasket is one of the most common BMW oil leaks. The rubber gasket hardens with age, and oil drips onto the alternator and serpentine belt. On some engines, an oil-soaked belt can shred and get pulled behind the crankshaft pulley, damaging the front seal.

Symptoms

What Causes It

Before You Start

• Park on level ground, set the parking brake and chock the wheels. Never work under a car held up only by a jack: use rated jack stands.
• Let the engine and exhaust cool before you touch them; coolant systems are under pressure when hot.
• Wear safety glasses and gloves, and disconnect the 12V battery before unplugging electrical parts or working near airbags.
• Check for open recalls on your VIN (Transport Canada or the manufacturer’s site) before you buy parts: a recall repair is free at the dealer.
• Let the engine cool fully; the housing is near hot parts.
• If the belt is oil-soaked, replace it; a shredded belt can damage the engine.

Step-by-Step: BMW Oil Filter Housing Gasket

1. Confirm the leak. Look for oil at the oil filter housing and alternator.
2. Check the belt. Check the serpentine belt for oil and fraying.
3. Remove parts in the way. Remove the intake parts or covers blocking access.
4. Drain some oil. Remove the oil filter cap to let oil drain back to the pan.
5. Remove the housing. Unbolt the housing and lift it off.
6. Fit new gaskets. Clean the surfaces and fit the new housing and cooler gaskets.
7. Reinstall. Refit the housing and torque the bolts to spec.
8. Check for leaks. Top up oil, start the engine and check for leaks.

When to Stop and Bring It In

• The belt has shredded or the front seal is damaged.
• Oil is still leaking after the gaskets.
• There are other leaks, such as the valve cover.
• You don’t have the special sockets. See BMW repair.

Not sure, or out of time? Radman Auto Repair in Etobicoke does this repair every week. Book online or call (416) 742-4521.

Also Known As

Owners search for “BMW oil filter housing gasket leak”, “BMW burning oil smell”, “N52 oil leak”, “N55 oil filter housing gasket” or “BMW oil leak on belt”. BMW calls it the oil filter housing gasket.

Frequently Asked Questions

See also BMW Repair & Service, BMW Check Engine Light, Multi-Point Inspection, DIY Repair Guides by Manufacturer.

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20:58 31 Aug 26

I cannot say enough good things about Livio and the team at Radman Auto Repair in Rexdale. We brought in my son’s 2015 Mitsubishi Lancer because the A/C was malfunctioning. We had already been to two other shops, paid for diagnostics, and received different explanations, so we were frustrated and unsure what to do next. Livio was outstanding. He listened carefully, looked at the issue, and explained everything clearly and in detail in a way that actually made sense. He was able to narrow down what was going on within minutes, without guessing, pressure, or recommending unnecessary work. What really stood out was that he did not charge us another diagnostic fee after learning we had already paid for two separate diagnoses. Even better, the work was completed the same day, which was a huge relief. It is rare to find a mechanic who is knowledgeable, honest, patient, efficient, and genuinely focused on helping customers understand the real issue before they spend money on repairs. Livio truly gets it. We are so happy we found Radman Auto Repair and would highly recommend Livio and his team to anyone looking for trustworthy, skilled, and customer-focused service..

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I fix my cars myself but I always go to Radman for AC work. Been coming here for years and they do great work and are fairly priced. The guys are honest and reliable. Very clean waiting room too!

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