INA ZS-S827 Engine Timing Crankshaft Sprocket

INA Timing Crankshaft Sprocket ZS-S827

The INA ZS-S827 timing crankshaft sprocket is built for engine timing service where OE-level fit and tooth accuracy matter. It is used across a wide range of GM applications, including Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Corvette models with matching camshaft configurations.

Key Features

• Engine timing crankshaft sprocket for valve train service
• Made from powdered metal, steel, or cast iron depending on application
• Heat treated to exact hardness specifications
• Built to meet or exceed OE quality and performance targets
• Cross-reference: INA Global Number 554 0807 100

Product Details

INA ZS-S827 is a crankshaft sprocket used in engine timing systems to maintain accurate chain engagement and cam/crank synchronization. This part is listed for many Chevrolet, GMC, Cadillac, Buick, Pontiac, Hummer, Saab, and Isuzu vehicles, including Fits 2007-2013 Chevrolet Silverado 1500, with 1 Bolt Cam; Fits 2005-2006 Chevrolet Silverado 1500, with 3 Bolt Cam; and Fits 2007-2013 GMC Sierra 1500, with 1 Bolt Cam. It also appears in applications such as Fits 1997-2004 Chevrolet Corvette and Fits 2008-2014 GMC Yukon, with 1 Bolt Cam.

This part number, ZS-S827, is a direct-fit timing gear/sprocket solution for engines that require precise crankshaft timing alignment. The design and material selection support consistent wear resistance and OE-style performance in timing service.

What It Helps Address

• Timing chain drive wear at the crankshaft sprocket
• Incorrect cam/crank synchronization from a worn sprocket
• Noise or rough operation related to timing component wear
• Timing service on GM V8 and related engine applications
• Replacement of a damaged or corroded timing gear

Installation Notes and Tips

Verify engine configuration before ordering, especially 1-bolt cam and 3-bolt cam applications noted in the fitment data. Confirm the vehicle’s year, make, model, and engine timing setup against the existing sprocket before installation. Proper timing alignment during assembly is critical for correct engine operation.

Quality Assurance

INA timing sprockets are manufactured to OE-quality standards using controlled materials and heat treatment processes for consistent hardness and durability. The part is engineered for the listed applications and backed by INA’s manufacturing focus on timing components.