Aluminum Oil Filter Cap – BMW B48 | OEM 11428583900
The original plastic oil filter cap on BMW B48 engines cracks, strips, or seizes over time — making oil changes difficult and causing leaks. This aluminum replacement cap is far more durable — machined to OEM thread specifications with an integrated O-ring seal. BMW models with B48 engine — 318i, 320i, 330i, 418i, 420i, 430i, 518i, 520i, 530i, X1 F48, X2 F39, X3 G01, X4 G02, X5 G05 (B48 variants)
When to Inspect This Part
- mixture faults or an intake air leak
- rough or unstable idle
- increased oil consumption
- whistling or excessive crankcase vacuum
What's Included
- 1 × Aluminum Oil Filter Cap
Part Number / PN
KLB48
Important Fitment Check
Before ordering, compare the part design, dimensions, connectors, and every available OEM/P/N marking with the part installed on the vehicle.
FAQ
How do I confirm fitment for this Aluminum Oil Filter Cap?
Compare the exact OEM/P/N and physical design with the installed part. Do not select the part by vehicle model alone.
What symptoms may indicate a problem with this Aluminum Oil Filter Cap?
Confirmed symptoms include mixture faults or an intake air leak, rough or unstable idle, increased oil consumption, whistling or excessive crankcase vacuum. Diagnose the original assembly before ordering so another fault is not mistaken for this part.
What is included with this Aluminum Oil Filter Cap?
The confirmed kit contents are: 1 × Aluminum Oil Filter Cap.
Does this listing include the complete surrounding assembly?
No. It includes only the item or repair components identified for this SKU. Inspect related parts separately and replace them only when diagnosis confirms a fault.
What should be checked before installation?
Check the OEM/P/N, dimensions, connectors, orientation, and condition of the mating components. Installation should follow the correct service procedure for the specific vehicle and assembly.
Read All
Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings