INA ZC-78300 Engine Timing Set

INA ZC-78300 Engine Timing Set

Restore valve timing accuracy with the INA ZC-78300 engine timing set for a wide range of Chevrolet and GMC applications. This premium timing chain kit is built around the essential components needed for a proper timing repair, with a tensioner included for a complete service on supported vehicles.

Compatible With classic Chevrolet C10, Camaro, Corvette, and GMC Jimmy applications, this kit is also used across many full-size trucks and vans from the 1960s through the mid-1990s. The INA ZC-78300 is a practical choice when you need a timing chain replacement that matches the vehicle’s original configuration.

Key Features

• Premium-grade engine timing set from INA
• Tensioner included
• Single roller .334 application coverage noted in fitment data
• Engine timing kit for valve train service
• Cross-reference: 5591741100
• Fits a broad range of Chevrolet and GMC V8 applications, including C/K trucks, vans, Blazer, Jimmy, and passenger cars

Product Details

INA timing chain kits are assembled to cover the core parts needed for timing service, helping reduce the chance of missing critical components during repair. For this application, the kit includes the timing chain and tensioner, while chain guides, gaskets, and drive sprockets are not included. In certain INA timing kit applications, additional gears, sprockets, and a Liqui Moly chain additive may be supplied; refer to the exact application listing for confirmation.

This part number, ZC-78300, is listed across 1967-1996 Chevrolet and GMC vehicles, including Chevrolet Caprice, Monte Carlo, Impala, El Camino, Camaro, Corvette, C10, K10, and GMC G1500, K2500, and Jimmy models. It is also cataloged for select Pontiac, Buick, and Oldsmobile applications with the same single roller .334 notes shown in the fitment data.

Common Repair Uses

• Replacing a stretched or noisy timing chain
• Correcting camshaft and crankshaft timing issues
• Addressing timing-related drivability problems
• Servicing worn tensioner components during engine repair
• Restoring proper valve train synchronization on Chevrolet and GMC engines

Installation Notes and Tips

Verify engine configuration, timing chain style, and fitment notes before installation. This listing includes applications marked Single Roller .334, Heavy Duty, and Light Duty, so matching the exact engine setup is important. Because chain guides, gaskets, and drive sprockets are not included, inspect related wear items and replace them as needed during timing service.

Professional installation is recommended for timing set replacement. Confirm timing marks, chain alignment, and tensioner operation during assembly to ensure correct engine timing on Chevrolet C1500, GMC K1500, and similar applications covered by this part.

Quality Assurance

INA is a premium engine component brand within Schaeffler’s aftermarket portfolio. According to the manufacturer, its timing chain kits are packaged to support a complete repair approach and may include a specially formulated chain additive in certain applications to reduce break-in friction and run-in wear.