INA ZS-S899 Engine Timing Crankshaft Sprocket

INA Timing Crankshaft Sprocket ZS-S899

The INA ZS-S899 engine timing crankshaft sprocket is built for precise valve train operation in select Ford, Mercury, Mazda, and Fusion-era applications. It is a direct-fit timing gear/sprocket solution for vehicles such as the Ford Focus, Mazda 3, and Mazda 6 when servicing the engine timing system.

Key Features

• Engine timing crankshaft sprocket for valve train service
• Made from powdered metal, steel, or cast iron depending on application design
• Heat treated to exact hardness specifications for consistent durability
• Built to meet or exceed OE quality and performance targets
• INA part number ZS-S899 for catalog and service identification

Detailed Description

INA timing gear and sprocket components are engineered for accurate timing engagement and dependable operation in the engine’s valve train. The ZS-S899 is a crankshaft sprocket used in timing system repairs where correct tooth profile, material strength, and heat treatment are important for maintaining synchronization. This part is listed for 2003-2007 Ford Focus, 2004-2007 Mazda 3, 2003-2007 Mazda 6, 2006 Ford Fusion, 2006-2007 Mazda 5, 2007-2008 Ford Escape, and 2007-2008 Mercury Mariner applications. This part cross-references INA Global Number 554 0820 100 for the same application.

What It Helps Address

• Worn or damaged crankshaft sprocket teeth
• Timing chain or belt drive synchronization issues
• Noisy or inconsistent engine timing operation
• Service replacement during timing system repair
• Fitment-specific timing component replacement for Ford Focus and Mazda 3 engines

Installation Notes and Tips

Confirm engine code and timing system configuration before installation. Replace the sprocket only after inspecting the full timing assembly, including the chain or belt, guides, tensioner, and related wear surfaces. Proper timing alignment is critical during service on Ford Focus, Mazda 6, and Mercury Mariner applications, so follow the vehicle service procedure and torque specifications exactly.

Quality Assurance

INA manufactures timing sprockets to OE-level material and hardness standards, using powdered metal, steel, or cast iron construction as specified for the application. The ZS-S899 is designed for precise fit and timing performance in the listed vehicles.