INA ZC-78734R Engine Timing Set

INA ZC-78734R Engine Timing Set

INA ZC-78734R is a premium engine timing set for select GM, Cadillac, Buick, Pontiac, Hummer, Saab, and Isuzu applications. It is built around the timing chain and related timing components needed to restore camshaft and crankshaft synchronization on vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade.

Key Features

• Premium-grade engine timing set from INA
• Includes the essential timing chain components for the repair
• Designed for applications with adjustable cam timing and 3-bolt cam configurations
• Part number ZC-78734R also cross-references 5591045100
• Fits a wide range of 1997-2007 GM V8 applications, including Chevrolet Corvette and GMC Yukon

Product Details

INA timing chain kits are assembled to cover the core parts needed for a timing service in one package. For this application, ZC-78734R includes the chain and is listed for vehicles with adjustable cam timing or 3-bolt cam setups, depending on the exact model and year. This makes it a direct-fit timing solution for many Chevrolet, GMC, Cadillac, Buick, Pontiac, Hummer, Saab, and Isuzu platforms that rely on precise valve timing for proper engine operation.

Use this timing set when servicing high-mileage engines or when timing chain wear, stretch, or timing noise has affected engine performance. The part number ZC-78734R is commonly searched for GM truck, SUV, and performance car timing repairs, including Silverado, Sierra, Tahoe, Yukon, Escalade, and Corvette applications.

What It Helps Fix

• Timing chain noise or rattling at startup
• Camshaft and crankshaft timing errors
• Engine misfire caused by worn timing components
• Rough idle or reduced engine performance from timing wear
• Check engine lights related to timing correlation faults

Installation Notes

Verify engine configuration, cam style, and model-year fitment before installation. This listing includes applications for adjustable cam and 3-bolt cam setups, so matching the exact vehicle notes is important for correct installation. Replace worn timing components as a complete service when the engine is already opened for timing repair.

Quality Assurance

INA timing chain kits are engineered to provide the essential components needed for a proper timing repair. The manufacturer notes that its timing chain kits are built to support accurate repair work and, in certain applications, may include a specially formulated chain additive developed with Liqui Moly to reduce friction during break-in and lower run-in wear.

• Fits 1997-2004 Chevrolet Corvette, N/A
• Fits 1998-2002 Chevrolet Camaro, N/A
• Fits 1999-2006 Chevrolet Silverado 1500, N/A
• Fits 1999-2006 GMC Sierra 1500, N/A
• Fits 2000-2004 Chevrolet Suburban 1500, N/A
• Fits 2000-2004 Chevrolet Suburban 2500, N/A
• Fits 2000-2004 GMC Yukon XL 1500, N/A
• Fits 2000-2004 GMC Yukon XL 2500, N/A
• Fits 2000-2006 Chevrolet Tahoe, N/A
• Fits 2000-2004 GMC Yukon, N/A
• Fits 2001-2004 Chevrolet Silverado 2500 HD, N/A
• Fits 2001-2004 Chevrolet Silverado 3500, N/A
• Fits 2001-2004 GMC Sierra 2500 HD, N/A
• Fits 2001-2004 GMC Sierra 3500, N/A
• Fits 2001-2003 Chevrolet Silverado 1500 HD, N/A
• Fits 2001-2003 GMC Sierra 1500 HD, N/A
• Fits 2002-2004 Chevrolet Avalanche 1500, N/A
• Fits 2002-2006 Cadillac Escalade, N/A
• Fits 2002-2006 Cadillac Escalade EXT, N/A
• Fits 2003-2004 Chevrolet SSR, N/A
• Fits 2003-2004 GMC Envoy XL, N/A
• Fits 2003-2004 GMC Savana 1500, N/A
• Fits 2003-2004 GMC Sierra 2500, N/A
• Fits 2003-2006 Chevrolet Express 2500, N/A
• Fits 2003-2006 Chevrolet Express 3500, N/A
• Fits 2003-2006 Chevrolet Trailblazer EXT, N/A
• Fits 2003-2006 GMC Savana 2500, N/A
• Fits 2003-2006 GMC Savana 3500, N/A
• Fits 2003-2006 Isuzu Ascender, N/A
• Fits 2003-2007 Hummer H2, N/A
• Fits 2004-2005 Cadillac CTS, N/A
• Fits 2004-2006 Cadillac Escalade ESV, N/A
• Fits 2004-2006 Cadillac Escalade EXT, N/A
• Fits 2004-2006 Pontiac GTO, N/A
• Fits 2004-2007 Buick Rainier, N/A
• Fits 2004 GMC Envoy XUV, N/A
• Fits 2005-2006 Chevrolet Avalanche 1500, N/A
• Fits 2005-2006 Chevrolet Silverado 1500, N/A
• Fits 2005-2006 Chevrolet Silverado 1500 HD, N/A
• Fits 2005-2006 Chevrolet Silverado 2500 HD, N/A
• Fits 2005-2006 Chevrolet Silverado 3500, N/A
• Fits 2005-2006 Chevrolet Suburban 1500, N/A
• Fits 2005-2006 Chevrolet Suburban 2500, N/A
• Fits 2005-2006 Chevrolet Tahoe, N/A
• Fits 2005-2006 GMC Sierra 1500, N/A
• Fits 2005-2006 GMC Sierra 1500 HD, N/A
• Fits 2005-2006 GMC Sierra 2500 HD, N/A
• Fits 2005-2006 GMC Sierra 3500, N/A
• Fits 2005-2006 GMC Yukon, N/A
• Fits 2005-2006 GMC Yukon XL 1500, N/A
• Fits 2005-2006 GMC Yukon XL 2500, N/A
• Fits 2005-2006 Pontiac Grand Prix, N/A
• Fits 2005-2006 Saab 9-7x, N/A
• Fits 2005-2007 Chevrolet Express 1500, N/A
• Fits 2005-2007 Chevrolet Express 2500, N/A
• Fits 2005-2007 Chevrolet Express 3500, N/A
• Fits 2005-2007 GMC Savana 1500, N/A
• Fits 2005-2007 GMC Savana 2500, N/A
• Fits 2005-2007 GMC Savana 3500, N/A
• Fits 2007 Chevrolet Silverado 1500 Classic, N/A
• Fits 2007 Chevrolet Silverado 1500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 3500 Classic, N/A
• Fits 2007 GMC Sierra 1500 Classic, N/A
• Fits 2007 GMC Sierra 1500 HD Classic, N/A
• Fits 2007 GMC Sierra 2500 HD Classic, N/A
• Fits 2007 GMC Sierra 3500 Classic, N/A