BMW Valve Cover
If you’ve noticed a burning oil smell or spotted oil leaking down the engine, your BMW may have a valve cover gasket issue. This is one of the most common oil-related repairs on engines like the N20, N55, and B58. At Torrance Motors, we specialize in fast, professional BMW valve cover replacement, using parts and procedures that meet or exceed factory specifications.
Common Symptoms of a Failing Valve Cover or Gasket
The valve cover gasket seals the top of your engine and keeps oil inside where it belongs. Over time, heat and pressure can cause this rubber seal to shrink, harden, or crack. Signs of failure include:
- Oil smell from the engine bay
- Visible oil on engine surfaces or near spark plugs
- Smoking from engine when idling
- Misfires or rough running (if oil leaks into spark plug wells)
- Low oil level or frequent top-offs
These symptoms often appear gradually, but if left unresolved, a leaking valve cover can damage ignition coils, spark plugs, and wiring—leading to more expensive repairs.
Which BMW Engines Are Affected?
We regularly perform valve cover replacements on the following BMW engines:
- N20 – Found in 320i, 328i, X1, and X3 28i
- N55 – Common in 335i, 535i, X5 35i, M235i
- B58 – Newer models like 340i, Z4 M40i, and 540i
- E39, E46, E60, E90, and earlier X3/X5 models
Plastic valve covers are especially prone to cracking with age and heat cycles. Some models may require full cover replacement rather than just the gasket.
Our Valve Cover Replacement Process:
At Torrance Motors, we start with a thorough inspection and diagnostic to confirm the leak’s origin. Once we’ve identified the issue, we:
- Remove the old valve cover and gasket
- Inspect for cracks or warping
- Replace the gasket (or full valve cover if needed)
- Clean all gasket surfaces and surrounding oil residue
- Torque the cover to BMW factory specifications
- Inspect coils and plugs for oil contamination
We include a detailed visual report and confirm the repair with a final test drive and check for leaks.
📅 Schedule a Valve Cover Inspection
Why Choose Torrance Motors?
- Experienced with BMW engine disassembly and reassembly
- BMW-specific tools for proper torquing and sealing
- 12-Month / 12,000-Mile Warranty on all repairs
- Honest, upfront pricing and photo-based reports
Related Services:
Oil leaks shouldn’t be ignored. Let Torrance Motors stop the mess at the source with expert valve cover replacement for your BMW.
