INA ZS-S1222 Engine Timing Camshaft Sprocket

Engine timing sprocket overview

The INA ZS-S1222 engine timing camshaft sprocket is built for precise valve train timing in compatible GM applications. It is a direct-fit cam sprocket for vehicles such as the Chevrolet Impala, Chevrolet Malibu, and Buick Lucerne, with fitment listed by model and year.

Key features

• OE-quality timing gear/sprocket construction for accurate camshaft timing.
• Made from powdered metal, steel, or cast iron depending on application requirements.
• Heat-treated to exact hardness specifications for consistent durability.
• Fits multiple GM platforms, including Chevrolet, Buick, Pontiac, and Saturn models.
• INA part number ZS-S1222 for easy identification and ordering.

Detailed description

INA designs timing gear sprockets to meet or exceed OE quality and performance standards. The ZS-S1222 is engineered as a camshaft sprocket for engine timing service, helping maintain correct synchronization between the camshaft and the rest of the valve train. This part number, ZS-S1222, cross-references 5540400100 for the same application. Compatible vehicles include the Chevrolet Impala, Chevrolet Malibu, and Pontiac G6, along with additional Buick, Saturn, and Chevrolet models listed in the fitment data.

What it is used for

• Restoring proper camshaft timing after wear or timing component service.
• Replacing a damaged or worn timing sprocket.
• Addressing timing noise or timing-related drivability concerns tied to sprocket wear.
• Supporting accurate valve train synchronization in compatible engines.

Installation notes and tips

Verify engine code and fitment details before installation, since this part is listed for specific model-year combinations only. Follow the vehicle service procedure for timing component replacement and confirm all timing marks are aligned during assembly. Use the fitment notes to match the correct application for Chevrolet Impala, Chevrolet Malibu, and other listed GM models.

Quality assurance

INA states that its timing gears and sprockets are manufactured to meet or exceed OE quality and performance expectations. The ZS-S1222 is produced from high-grade metal materials and heat treated to exact hardness specifications for controlled strength and wear resistance.