Original BMW Timing Chain Guide Bearing Bolt for BMW 1–7 Series, M2, M3, M4, X1, X3, X4, X5, X6, and Z4 (2006–2021)

Inside the timing case of BMW N20, N26, N51, N52, N54, N55, and S55 engines, Original BMW bolt 11-31-7-584-170 is the bearing bolt that secures the timing chain tensioner rail and guide rail to the engine block in BMW 1 through 7 Series, M2, M3, M4, X1, X3, X4, X5, X6, and Z4 models (2006–2021). The bolt secures the timing chain tensioner rail and guide rail to the engine block. Each bolt weighs 49 g. It is made in Germany. Timing chain guides keep the chain on its path between the crankshaft and camshafts, and the bolts that hold them stay in the engine for its whole life unless the timing system is opened.

Original BMW Parts carry a 24-month parts warranty.

BMW released 11-31-7-584-170 in July 2007 as the replacement for 11-31-7-516-112. Unlike many BMW supersessions, this one is marked exchangeable retrospectively, so the current bolt is approved for engines that left the factory with the earlier number. That is how the 2006 E90 325i and 330i, the E60 525i and 530i, and the 2006 Z4 fall under the same number as much later N20 and N55 cars. BMW supplies it as a single piece.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-31-7-584-170
• BMW part name: Bolt
• Function: Timing chain guide bearing bolt, securing tensioner rail and guide rail to the block
• Weight: 49 g (0.1 lb)
• Production start: July 2007
• Replaces 11-31-7-516-112, exchangeable retrospectively
• Made in Germany
• Sold as a single piece
• Warranty: 24 months

Common Questions

What does this bolt hold?
It secures the timing chain tensioner rail and guide rail to the engine block.

Can it replace 11-31-7-516-112?
Yes. BMW marks this supersession as exchangeable retrospectively.

Where is it made?
Germany.

PMB carries the factory BMW hardware that goes back into an open timing case.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.