Febi 21135 Engine Timing Crankshaft Gear

Febi 21135 Engine Timing Crankshaft Gear

Febi 21135 is an engine timing crankshaft gear for chain-driven timing systems with a 20-tooth profile and a 36.0 mm inner diameter. It is a direct-fit replacement for select Mercedes-Benz diesel applications, including Mercedes-Benz 300D and Mercedes-Benz 300TD models from the late 1970s and early 1980s.

Key Features

• Engine timing crankshaft gear for chain-driven applications
• 20 tooth quantity for the specified timing setup
• 36.0 mm inner diameter for proper shaft fitment
• OE-style replacement part for select Mercedes-Benz diesel engines
• Part number 21135 for accurate ordering and catalog matching

Detailed Description

Febi 21135 is built for engine timing systems that use a chain to synchronize crankshaft rotation with the rest of the valvetrain. The gear’s 20 teeth and 36.0 mm inner diameter are the key dimensions to verify when matching the part to the engine. This makes it a practical replacement for Mercedes-Benz 300D and Mercedes-Benz 300TD vehicles where the original crankshaft gear matches these specifications. The part number 21135 is also useful when cross-checking catalog listings and service records.

This part cross-references Mercedes-Benz OE numbers 180 052 02 03 and 615 052 00 03 for the same application.

Vehicle Fitment

• Fits 1977-1981 Mercedes-Benz 300D, N/A. Notes: Inner Diameter 1 (mm): 36; No. of Teeth: 20; Engine Timing: chain.
• Fits 1979-1980 Mercedes-Benz 300TD, N/A. Notes: Inner Diameter 1 (mm): 36; No. of Teeth: 20; Engine Timing: chain.

Common Replacement Reasons

• Worn or damaged crankshaft gear teeth
• Timing chain drive noise caused by gear wear
• Incorrect crankshaft-to-camshaft timing from a failed gear
• Service replacement during engine timing repair
• Restoration work on Mercedes-Benz 300D or Mercedes-Benz 300TD diesel engines

Installation Notes and Tips

Confirm the engine uses chain timing and verify the 36.0 mm inner diameter and 20-tooth count before installation. Match the gear to the existing timing components and inspect the chain, guides, and related timing parts for wear during service. Proper alignment is critical in any Mercedes-Benz 300D or Mercedes-Benz 300TD timing repair, so compare the old part and catalog references before assembly.

Quality Assurance

Febi is an established aftermarket brand known for replacement engine components that follow OE-style specifications. Use the listed dimensions and fitment data to confirm application accuracy for Mercedes-Benz 300D and Mercedes-Benz 300TD models. Part number 21135 helps ensure the correct timing gear is selected for the intended engine.