INA ZS-S818T Engine Timing Camshaft Sprocket

INA ZS-S818T Timing Camshaft Sprocket

The INA ZS-S818T is an engine timing camshaft sprocket built for select Ford and Mercury applications. It is made to OE-level dimensional and material standards for accurate cam timing and dependable chain engagement.

Key Features

• Engine timing camshaft sprocket for valve train service
• Constructed from powdered metal, steel, or cast iron depending on application requirements
• Heat treated to exact hardness specifications
• Designed for silent type chain applications
• Cross-references INA Global Number 554 0520 100

Detailed Description

INA timing gears and sprockets are engineered to meet or exceed OE quality and performance expectations. The ZS-S818T is a direct-fit camshaft sprocket for timing system repair on vehicles such as the Ford Explorer, Ford F-150, Ford Bronco, Ford E-Series vans, Ford F-250, Ford F-350, Ford Mustang, and Mercury Mountaineer. This part number, ZS-S818T, is listed for silent type chain applications and supports precise camshaft timing in the engine valve train.

This part cross-references INA Global Number 554 0520 100 for the same application.

What It Helps Address

• Worn or damaged camshaft sprocket teeth
• Timing chain noise in silent type chain systems
• Incorrect cam timing caused by sprocket wear
• Timing system service on high-mileage Ford and Mercury engines
• Replacement during engine rebuild or timing component repair

Installation Notes and Tips

Verify engine code, timing chain style, and OE reference before installation. The fitment list includes 1994-2001 Ford and Mercury applications, with model-specific coverage for the Explorer, Mountaineer, Bronco, F-Series trucks, E-Series vans, and Mustang. Follow factory timing procedures and align all timing marks carefully during assembly.

Quality Assurance

INA manufactures timing sprockets from high-quality powdered metal, steel, or cast iron and heat treats them to exact hardness specifications for OE-level fit and function.