INA ZS-S850T Engine Timing Camshaft Sprocket

INA ZS-S850T Timing Camshaft Sprocket

The INA ZS-S850T is an engine timing camshaft sprocket for select GM and Saturn applications. It is built to OE-quality standards using powdered metal, steel, or cast iron construction with heat treatment matched to exact hardness specifications.

Key Features

• Engine timing camshaft sprocket for valve train service
• OE-quality replacement from INA
• Constructed from powdered metal, steel, or cast iron, depending on application
• Heat treated to controlled hardness specifications
• Cross-references INA Global Number 554 0528 100
• Part number: ZS-S850T

Application Details

Compatible with a wide range of 2000-2008 Chevrolet, Pontiac, Saturn, and Oldsmobile vehicles. Fits 2005-2008 Chevrolet Cobalt, cam; 2006-2008 Chevrolet HHR, cam; 2004-2008 Chevrolet Malibu, cam; 2007-2008 Pontiac G5, cam; 2007 Pontiac Solstice, cam; 2003-2007 Saturn Ion, cam; and 2002-2007 Saturn Vue, DOHC, cam. Additional coverage includes 2002-2005 Chevrolet Cavalier, 2004-2005 Chevrolet Classic, 2002-2005 Pontiac Grand Am, 2002-2005 Pontiac Sunfire, 2002-2004 Oldsmobile Alero, 2004 Saturn L300, 2001-2003 Saturn L200, 2001-2003 Saturn LW200, 2001-2002 Saturn L100, 2000 Saturn LS, 2000 Saturn LS1, and 2000 Saturn LW1.

What It Is Used For

• Replacing a worn or damaged camshaft sprocket
• Restoring correct cam timing in the engine
• Addressing timing noise caused by sprocket wear
• Correcting timing-related drivability concerns
• Supporting valve train repair during timing service

Installation Notes

Verify engine code, timing configuration, and OE reference before installation. This part cross-references INA Global Number 554 0528 100 for the same application. Follow factory timing procedures and torque specifications during camshaft sprocket replacement.

Quality Assurance

INA timing gears and sprockets are manufactured to meet or exceed OE quality and performance expectations, with materials and heat treatment selected for consistent durability in engine timing service.