For BMW N20 N55 N62 B38 B48 Engine Timing Chain 11317504468 Model F10 F20 F21 F25 F30 F35

The genuine BMW Timing Chain (Part No.: 11317504468) is a high-precision transmission component specifically designed for BMW N-series and B-series engines. It ensures precise synchronization between the camshaft and crankshaft, guaranteeing efficient and stable engine operation. Manufactured from high-strength alloy steel using advanced production techniques, it delivers extended service life and exceptional reliability—making it the ideal choice for replacing worn chains or repairing engine timing systems.

1. Vehicle Compatibility Table

Compatible BMW Models (examples, subject to exact year and engine model):

Note:

• Variations may exist based on region or model revisions; verify using VIN or catalogs (e.g., RealOEM).

• Some diesel engines (e.g., N47) may not be compatible.

2. Key Features

• High Durability: Longer lifespan than timing belts (typically lasts the engine’s lifetime but requires periodic inspection).

• Precision Timing: Ensures synchronization between camshaft and crankshaft to prevent ignition timing errors.

• Anti-Stretch: Special heat treatment minimizes elongation over time.

• Optional Kits: May include tensioners, guides, or sprockets (depending on the package).

3. Manufacturing Process

• Material Forging: High-purity alloy steel shaped via cold/hot forging.

• Precision Machining: CNC-machined link profiles for perfect gear engagement.

• Surface Treatment: Carburizing or DLC (Diamond-Like Carbon) coating for wear resistance.

• Quality Control: 100% tension testing and magnetic particle inspection to eliminate defects.

4. Installation Guidelines

• Special Tools: Requires timing tools (e.g., BMW locking pins) to fix crankshaft/camshaft positions.

• Critical Steps:

  1. Mark old chain and gear positions before removal (if no tools are available).

  2. Inspect tensioners/guides; replace if worn.

  3. Manually rotate crankshaft 2-3 revolutions post-installation to check for interference.

• Torque Specifications: Follow repair manual strictly (e.g., angle torque for sprocket bolts).

• Warnings:

  • Incorrect installation may cause valve/piston collision, leading to severe engine damage.

  • Professional installation recommended, with ECU adaptation reset (e.g., via ISTA).