INA ZC-78363 Engine Timing Set

INA Timing Chain Kit ZC-78363

INA ZC-78363 is a premium engine timing set for select GM trucks and SUVs with single roller .334 timing chain applications. It is built to support accurate valve timing service on vehicles such as the Chevrolet Silverado 2500 HD, Silverado 3500, and GMC Sierra 2500 HD.

Key Features

• Premium-grade INA engine timing set
• Includes the essential timing chain components needed for a complete repair
• Application-specific kit content varies by engine design
• High-performance chain additive is included in certain applications to reduce friction during break-in
• Cross-reference part number: 5591747100

Product Details

INA timing chain kits are assembled to help restore proper engine timing with the correct OE-style components for the application. The ZC-78363 part number is listed for 2004-2006 Chevrolet Avalanche 2500, Silverado 2500 HD, Silverado 3500, Suburban 2500, and 2004-2006 GMC Sierra 2500 HD, Sierra 3500, Yukon XL 2500, plus 2007 Chevrolet Silverado 2500 HD Classic, Silverado 3500 Classic, and 2007 GMC Sierra 2500 HD Classic. This kit is identified for single roller .334 applications and is part of INA’s premium engine timing set lineup.

In certain applications, INA timing kits include a specially formulated chain additive developed for Schaeffler by Liqui Moly to reduce friction during break-in and lower run-in wear. For buyers searching for an INA timing chain kit for Chevrolet Silverado 2500 HD Classic or a timing set for GMC Sierra 3500, ZC-78363 is the listed reference.

Common Repair Uses

• Restoring correct camshaft and crankshaft timing
• Replacing a worn or stretched timing chain assembly
• Addressing timing noise from chain wear
• Correcting timing-related drivability or performance concerns
• Servicing high-mileage GM V8 timing components

Installation Notes

• Verify engine code, chain style, and OE reference before ordering.
• Confirm the vehicle uses the listed single roller .334 application.
• Inspect related timing components during service and replace any worn parts as needed.
• Follow factory timing procedures and torque specifications during installation.

Quality Assurance

INA timing chain kits are engineered as premium replacement parts for engine timing service. The kit content is application-specific, and some versions include friction-reducing chain additive to support break-in performance. Part number ZC-78363 also cross-references 5591747100 for the same application.