Original BMW Connecting Rod Bolt M10 x 1.25 for BMW E46 M3 and Z4 M (2003–2008)

This Original BMW connecting rod bolt clamps the rod bearing cap to the connecting rod in the S54 inline six of the 2003–2006 E46 M3 and the 2006–2008 Z4 M Coupe and M Roadster. It is an M10 x 1.25 bolt with an E12 Torx head and weighs 32 grams. BMW has produced it since November 2002. Rod bolts carry the full load of the cap holding the bearing around the crankshaft journal, so they are stretch-tightened fasteners rather than ordinary hardware.

Original BMW Parts carry a 24-month parts warranty.

Thread size matters on the S54 because BMW changed its connecting rods around February 2003. Early rods used a double hex M11 x 1.25 bolt meant to be reused, and those rods cannot take this bolt. Later engines use updated rods with this E12, M10 x 1.25 bolt, and it works only with the updated rods. Confirm which rod bolt your engine uses before ordering, or send us your VIN. BMW sells it individually.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-24-7-834-310
• BMW part name: connecting rod bolt
• Thread: M10 x 1.25
• Head: E12 Torx
• Weight: 32 g (1.13 oz)
• Production start: November 2002
• Replaces 11-24-7-831-331, not interchangeable backward
• Sold individually
• Warranty: 24 months on Original BMW Parts

Common Questions

Can I reuse the rod bolts when I replace rod bearings?
No. These bolts must be replaced every time the rod caps are removed.

Is this the same as part 11-24-7-831-331?
That is the earlier number this bolt replaced. BMW marks the change as not retroactive, so this bolt is not a drop-in for engines built around the older part.

PMB can help you build a complete S54 rod bearing parts order.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.