BMW 740i Oil Filter Housing Repair

Black BMW 740i car parked outside of our shop | Euro Auto Tech & Smog

Project Name: BMW 740i Oil Filter Housing Repair


Project Type: Residential


Location: La Mesa, CA


Duration: 2 days


Project Cost: $1,800


Primary Service Provided:

  • Oil Filter Housing Repair


Project Details

When a 2020 BMW 740i arrived at Euro Auto Tech & Smog with a coolant leak, our team quickly went to work to identify the root cause. Through a detailed diagnostic process, we traced the issue to a failing oil filter housing—an increasingly common problem on BMWs equipped with the B58 engine.


This engine uses a plastic oil filter housing paired with a metal oil cooler, a combination that often leads to cracks or gasket failures over time. When this happens, drivers may experience sudden coolant and oil leaks, risking severe engine damage if left unchecked.


Our skilled technicians efficiently replaced the faulty oil filter housing, restoring the BMW 740i’s reliability and protecting the engine from potential failure. We always recommend B58 BMW owners pay close attention to this component during regular maintenance, as early detection can prevent costly repairs down the road.

August 28, 2026
Let’s talk shop. This 2014 Audi SQ5 came through the shop with what looked like a fairly routine oil leak. But once we got it on the lift and started digging deeper, we found a little surprise hiding behind the symptoms. Let’s dive in. Diagnosis On the 3.0 supercharged V6, timing chain system issues can become a serious concern as mileage adds up. Chain stretch, worn guides, tensioner problems, and related components can lead to timing faults, rattling noises, especially on cold starts, and, if ignored, potentially major engine damage. Another major issue is that the timing chain is located at the rear of the engine, which means that replacement is an intensive, labor-heavy service requiring partial or full engine removal. What Needs to Be Done When timing chain wear is confirmed, the repair needs to be approached as a complete system, not simply “replace the chain” and call it a day. Depending on what the inspection reveals, this can include timing chains, guides, tensioners, seals, and other related components. We also inspect the surrounding areas for oil leaks and signs of wear while everything is accessible. Pro Tip: If you start hearing noticeable rattling on startup, the car develops timing fault codes, or you’re seeing unexplained oil leaks, don’t wait until the check engine light comes on. By that time, you might be dealing with a bigger problem. Result: A smooth ride and a happy driver. The goal isn’t just to quiet a noise or clear a code. It’s proper diagnostics to know the root cause and a proper mechanic who knows the proper repairs. Catch us every Friday for more shop talk. And remember: Good work ain’t cheap. Cheap work ain’t good. Euro Auto Tech & Smog | European Specialist | 7633 El Cajon Blvd #217, La Mesa, CA 91942
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