Original BMW N55 Valve Cover ASA-Bolt M6x56 for BMW 135i, M235i, M2, 335i, 435i, 535i, 640i, 740i, X1, X3, X4, X5, and X6 (2010–2019)

BMW's M6x56 ASA bolt holds the valve cover to the cylinder head on N55 inline-six models, from the 2010 535i GT through the 2019 X6 and 640i xDrive Gran Coupe. BMW names it the ASA-Bolt and sizes it as M6 thread by 56 mm long. Each bolt weighs about 30 grams. BMW's parts data shows production from September 2009. Every vehicle BMW pairs with this bolt is an N55 car, so the engine is the main point to check.

Original BMW Parts carry a 24-month parts warranty.

Valve cover bolts clamp the cover and its gasket against the head. Part number 11-12-7-603-563 is the N55 version. It covers the E82 135i, the E90 facelift 335i, the F30 and F34 GT 335i, the F22 and F87 M235i and M2, the F32 and F36 435i, the F07 and F10 535i, the F06, F12, and F13 640i, the F01 and F02 facelift 740i, 740Li, and ActiveHybrid 7, the F10 ActiveHybrid 5, and the F30 ActiveHybrid 3. On the X side it fits the E84 X1, F25 X3, F26 X4, E70 facelift and F15 X5, and E71 and F16 X6 with the N55. The M6x56 designation comes from BMW's parts data.

Technical Details

• Manufacturer: BMW
• Part number: 11-12-7-603-563
• BMW part name: ASA-Bolt
• Thread and length: M6 x 56 mm
• Weight: about 30 g (1.06 oz)
• Production start: September 2009
• Engine: N55
• Sold individually
• Warranty: 24 months on Original BMW Parts

Common Questions

Which engine uses this bolt?
BMW pairs it only with the N55 six-cylinder in the models above.

What size is it?
It is an M6 bolt, 56 mm long, and weighs about 30 grams.

Is it sold as a set?
No. It is sold as a single bolt, so order the number your job needs.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.