Original BMW Timing Chain Guide Rail for BMW E36 318i, 318is, 318ti, and Z3 (1993–1999)

Made in Germany and weighing only 14 g, this Original BMW timing chain guide rail holds the timing chain on its path between the crankshaft and camshaft sprockets on 1993–1999 BMW E36 318i, 318is, 318ti, and Z3 models with four-cylinder M42, M43, and M44 engines. Keeping the chain on that path is what keeps valve timing locked to crankshaft rotation, so the intake and exhaust valves open and close at the right moment. The guide limits excess chain movement and vibration while the engine runs. It works alongside the timing chain tensioner, which holds the chain at the correct tension so slack does not build up. A worn or broken guide lets the chain slap against nearby parts and, in severe cases, slip on its sprockets.

Original BMW Parts carry a 24-month parts warranty.

BMW's parts data calls this part 'Guide' and shows production starting in September 1993. It replaced the earlier 11-31-1-721-419, but BMW marks that change as not exchangeable retrospectively. If your engine was built before September 1993 or still carries the older guide, check with us before ordering. Across the E36 range, the same guide serves the four-cylinder 318 sedan, convertible, coupe, and 318ti compact, and it also appears on the Z3 with the M43 and M44.

Technical Details

• Manufacturer: BMW
• Part number: 11-31-1-734-694
• BMW part name: Guide (timing chain guide rail)
• Weight: 14 g
• Production start: September 1993
• Replaces 11-31-1-721-419, not exchangeable retrospectively
• Engines: M42, M43, and M44 four-cylinder
• Country of manufacture: Germany
• Sold individually
• Warranty: 24-month Original BMW parts warranty

Common Questions

What noise does a worn timing chain guide make?
The most common sign is a rattling or clattering from the engine, most noticeable at start-up or idle, caused by the chain hitting or rubbing nearby parts.

Can a bad guide cause running problems?
Yes. A worn guide can let the chain slip, which upsets cam timing and can cause misfires, stalling, or hard starting.

Does this guide work on its own?
It works together with the timing chain tensioner, which maintains chain tension while the guide controls the chain's path.

PMB Performance supplies factory timing parts for the M42 and M44 four-cylinder BMWs.

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and application notes before ordering. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.