Original BMW 12.5 mm Engine Block Deck Dowel for BMW 3, 5, 7, and 8 Series, M5, X3, X4, X5, X6, Z3, and Z8 (1982–2019)

This Original BMW 12.5 mm dowel, part number 11-12-1-726-241, sits in the engine block deck and locates the cylinder head on BMW engines from the E28 528e through the X6 crossover. Dowels like this one hold the head in exact register with the block as it is lowered on, so the head gasket and the head bolts line up. BMW specifies a diameter of 12.5 mm and a weight of only 4 g (0.14 oz). The part has been in BMW production since June 1988.

Original BMW Parts carry a 24-month parts warranty.

BMW's parts data calls this part simply a dowel, with the dimension D=12.5MM, and it is used on the head-to-block joint of four-cylinder, six-cylinder, V8, and V12 engines alike. Engines that use it include the M20 in the E30 325i and 325e, the M42 and M44 in the E36 318i, 318is, and 318ti, the M60 in the E34 530i, and the S62 in the E39 M5. It is made in Germany and sold individually, so order the quantity your job calls for.

Technical Details

• Manufacturer: BMW (genuine part)
• Part number: 11-12-1-726-241
• BMW name: Dowel, D=12.5MM
• Function: engine block deck dowel for cylinder head alignment
• Weight: 4 g (0.14 oz)
• Production start: June 1988
• Made in Germany
• Sold individually
• Warranty: 24-month parts warranty

Common Questions

What size is this dowel?
BMW specifies a 12.5 mm diameter.

What does this dowel do?
It is a block deck dowel that aligns the cylinder head to the engine block.

Fitment & Compatibility

Use the fitment table below to confirm the exact year, make, model, submodel, and any application notes before ordering. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.