Original BMW Timing Chain Tensioner and Guide Rail for BMW 135i, 335i, 535i, 740i, X6, and Z4 (2007–2016)

Built in Germany, this Original BMW chain tensioner and guide rail is the main timing chain guide for the N54 twin-turbo six-cylinder in the BMW 135i, 335i, 535i, 740i, X6, Z4, and related models from 2007–2016. A timing chain guide keeps the chain on its correct path around the crankshaft and camshaft sprockets and works with the chain tensioner to hold proper tension, limiting chain movement and vibration. That control is what keeps valve timing in step with crankshaft rotation. The rail weighs 358 grams, and BMW production of this number dates to June 2006.

Every Original BMW part from PMB includes a 24-month warranty.

BMW names this part the chain tensioner and guide rail. Across the cars covered here, it fits the E82 coupe and E88 convertible 1 Series, the E90 sedan, E92 coupe, and E93 convertible 3 Series, the facelifted E60 5 Series, the F01 and F02 7 Series, the E71 X6, and the E89 Z4. A worn guide most often announces itself with a rattling or clattering noise from the engine, especially at startup or idle. As wear progresses, the chain can slip and upset the timing between crankshaft and camshafts, which can bring misfires, stalling, or hard starting.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-31-7-542-837
• BMW part name: chain tensioner and guide rail
• Engines: N54 and N54T
• Weight: 358 g (0.8 lb)
• Production start: June 2006
• Made in Germany
• Sold individually as one piece
• Warranty: 24 months

Common Questions

Is this the upper or lower guide?
This is the lower timing chain guide assembly, the main guide rail in the N54 timing system.

Do the 335is and 1 Series M use a different rail than the 335i?
No. BMW uses this same number on both the N54 and the higher-output N54T engine.

Order the correct N54 timing parts from PMB Performance and keep the job on schedule.

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.