Cloyes C551 Engine Timing Chain - Left Upper

Engine Timing Chain Overview

The Cloyes C551 engine timing chain is built for precise crankshaft and camshaft synchronization in Mercedes-Benz applications. It is engineered for accurate valve timing, quiet operation, and OE-level performance in service.

Fits 2012-2020 Mercedes-Benz models in the left upper engine timing chain position, including SL550, SL63 AMG, GLE63 AMG, GLS550, CLS550, E550, S550, and related applications. The C551 timing chain is a direct service part for timing system repair on these vehicles.

Key Features

• Premium-material construction for timing system durability.
• Heat-treated and pre-stressed for stable chain performance.
• Engineered for accurate tooth engagement with sprockets.
• Supports quiet operation and consistent valve timing.
• Cloyes timing chain design backed by more than a century of timing-system experience.

Detailed Description

Cloyes C551 is part of the Engine Timing Chain line and is intended for Mercedes-Benz engines that require precise timing control. This chain helps maintain synchronization between the crankshaft and camshaft, which is critical for smooth engine operation and long-term performance. It fits 2012-2020 Mercedes-Benz SL550, 2012-2017 Mercedes-Benz S550, and other listed Mercedes-Benz models in the left upper position. The C551 part number is also useful when cross-referencing timing service needs, and this part cross-references 2780503716 for the same application.

Cloyes recommends servicing the full timing system during repair, including the chain, tensioners, guides, and sprockets, to maintain timing integrity. The C551 timing chain reflects Cloyes' focus on OE-level fit and timing accuracy for Mercedes-Benz engine service.

What It Helps Fix

• Timing chain stretch that affects camshaft synchronization.
• Excessive timing noise from worn chain components.
• Valve timing irregularities that can affect engine operation.
• Timing system wear during high-mileage service intervals.
• Repair needs on Mercedes-Benz engines with left upper chain placement.

Installation Notes

Verify engine code and timing system configuration before installation. Cloyes recommends replacing the chain together with the tensioners, guides, and sprockets during timing service. Confirm the left upper fitment listed for your Mercedes-Benz application before ordering.

Quality Assurance

Cloyes has supplied automotive timing systems since 1921, and the C551 is manufactured to support OE-level performance standards. The brand states this timing chain is backed by an industry-leading warranty and technical support.