If your M50, M52, or M54 engine takes a few seconds to build oil pressure after sitting, there's a good chance that your factory oil filter housing drain back valve has failed. Over time, the factory plastic check valve degrades, allowing oil to drain completely out of the housing and back into the oil pan while sitting. Every cold start essentially becomes a dry start, resulting in a loud ticking noise and causing unnecessary wear on your engine's internals.
Unfortunately, BMW does not offer this check valve as a standalone part, forcing you to purchase a costly, complete oil filter housing assembly just to fix one failed plastic component. Thankfully, our team of BMW enthusiasts took note of this common failure mode and designed a permanent, cost-effective fix.
Our Billet Oil Filter Housing Drain-Back Valve is designed as a direct-fit upgrade for your factory oil filter housing. CNC-machined from high-strength billet aluminum, this upgraded valve restores positive sealing to keep the oil filter housing fully primed. Maintaining this hydraulic prime ensures rapid oil pressure stabilization upon startup, directly mitigating dry-start bearing wear and top-end lifter starvation without requiring the purchase of a complete OEM housing assembly.
If your M50, M52, or M54 engine takes a few seconds to build oil pressure after sitting, there's a good chance that your factory oil filter housing drain back valve has failed. Over time, the factory plastic check valve degrades, allowing oil to drain completely out of the housing and back into the oil pan while sitting. Every cold start essentially becomes a dry start, resulting in a loud ticking noise and causing unnecessary wear on your engine's internals.
Unfortunately, BMW does not offer this check valve as a standalone part, forcing you to purchase a costly, complete oil filter housing assembly just to fix one failed plastic component. Thankfully, our team of BMW enthusiasts took note of this common failure mode and designed a permanent, cost-effective fix.
Our Billet Oil Filter Housing Drain-Back Valve is designed as a direct-fit upgrade for your factory oil filter housing. CNC-machined from high-strength billet aluminum, this upgraded valve restores positive sealing to keep the oil filter housing fully primed. Maintaining this hydraulic prime ensures rapid oil pressure stabilization upon startup, directly mitigating dry-start bearing wear and top-end lifter starvation without requiring the purchase of a complete OEM housing assembly.
Features & Benefits:
Keeps the oil filter housing primed with oil to eliminate noisy dry startups
Precision-machined, anodized billet aluminum check valve body with zinc-plated steel plunger and spring
Maintenance-free sealed design engineered for lifetime durability
Easy installation — pry the old one out and press the new one in during oil filter housing gasket service
Product Development:
Our M5X Billet Aluminum Oil Filter Housing Drain-Back Valve was designed, engineered, tested, and quality inspected by our Research and Development team in our Wadsworth, Ohio, facility. We strive for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.
Prop 65 Warning
Cross Reference
11421740001
11421738639
11421713838
Product Q&A
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Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
E34
525i
M50 2.5L
For Non-VANOS M50B25 with Oil Filter Housing 11421738639
BMW
E36
323ic
M52 2.5L
Use vehicle selector to confirm fitment
BMW
E36
323is
M52 2.5L
Use vehicle selector to confirm fitment
BMW
E36
325i
M50 2.5L
For Non-VANOS M50B25 with Oil Filter Housing 11421738639
BMW
E36
325ic
M50 2.5L
For Non-VANOS M50B25 with Oil Filter Housing 11421738639
BMW
E36
325is
M50 2.5L
For Non-VANOS M50B25 with Oil Filter Housing 11421738639
BMW
E36
328i
M52 2.8L
Use vehicle selector to confirm fitment
BMW
E36
328ic
M52 2.8L
Use vehicle selector to confirm fitment
BMW
E36
328is
M52 2.8L
Use vehicle selector to confirm fitment
BMW
E39
525i
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E39
528i
M52 2.8L
Use vehicle selector to confirm fitment
BMW
E39
530i
M54 3.0L
Use vehicle selector to confirm fitment
BMW
E46
325Ci
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E46
325i
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E46
325xi
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E46
330Ci
M54 3.0L
Use vehicle selector to confirm fitment
BMW
E46
330i
M54 3.0L
Use vehicle selector to confirm fitment
BMW
E46
330xi
M54 3.0L
Use vehicle selector to confirm fitment
BMW
E53
X5
M54 3.0L
Use vehicle selector to confirm fitment
BMW
E60
525i
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E60
530i
M54 3.0L
Use vehicle selector to confirm fitment
BMW
E61
525i
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E83
X3
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E83
X3
M54 3.0L
Use vehicle selector to confirm fitment
BMW
Z3
2.3
M52 2.5L
Use vehicle selector to confirm fitment
BMW
Z3
2.5
M52 2.5L
Use vehicle selector to confirm fitment
BMW
Z3
2.5i
M54 2.5L
Use vehicle selector to confirm fitment
BMW
Z3
2.8
M52 2.8L
Use vehicle selector to confirm fitment
BMW
Z3
3.0i
M54 3.0L
Use vehicle selector to confirm fitment
BMW
Z4
2.5i
M54 2.5L
Use vehicle selector to confirm fitment
BMW
Z4
3.0i
M54 3.0L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
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