INA ZC-2538S Engine Timing Gear Set

INA ZC-2538S Timing Chain Kit

INA ZC-2538S is an engine timing gear set for select classic Chevrolet, GMC, Oldsmobile, and Pontiac applications. It brings together the core timing components needed for a proper timing service on compatible V8 engines, including chains, tensioners, and guides, with gears and sprockets included in certain applications.

Key Features

• Engine timing gear set for valve train service
• Includes essential timing chain kit components: chains, tensioners, and guides
• Some applications also include gears and sprockets
• Includes a specially formulated chain additive from Liqui Moly for Schaeffler
• Chain additive helps reduce friction during break-in and lowers run-in wear by up to 20%
• Cross-reference: This part cross-references 5540934200 for the same application.

Detailed Description

Built for timing system repair on older GM platforms, INA ZC-2538S supports service work on vehicles such as the 1976 Oldsmobile Cutlass, 1976 Pontiac Firebird, and 1975 Chevrolet C10. It is also listed for additional Chevrolet, GMC, Oldsmobile, and Pontiac models from 1967 through 1976, including the Chevrolet El Camino, GMC Jimmy, and GMC G15/G1500 Van. Use this kit when replacing worn timing components on compatible engines that require a complete timing gear set rather than a single chain or sprocket.

What It Helps Fix

• Timing chain stretch or slack
• Worn timing gears or sprockets
• Noisy timing drive operation
• Erratic camshaft timing caused by worn guides or tensioners
• Break-in wear after timing system service

Installation Notes and Tips

Verify engine identification and match the stamped gear markings noted in the fitment data before installation. For 1976 Oldsmobile Cutlass, Cutlass Supreme, and Omega, confirm cam gear stamp 14 on the gear hub and crank gear stamp GM71 on the face. For 1975 Chevrolet C10 and related truck/van applications, confirm the engine configuration noted in the fitment details before ordering. Professional installation is recommended, and all timing marks should be aligned carefully during assembly.

Quality Assurance

INA timing chain kits are assembled to include the core components needed for a complete timing repair, and the included chain additive is formulated to reduce friction during initial operation and lower run-in wear.

• Fits 1976 Oldsmobile Cutlass, N/A
• Fits 1976 Oldsmobile Cutlass Supreme, N/A
• Fits 1976 Oldsmobile Omega, N/A
• Fits 1976 Pontiac Firebird, N/A
• Fits 1976 Pontiac Grand LeMans, N/A
• Fits 1976 Pontiac LeMans, N/A
• Fits 1975 Chevrolet C10, N/A
• Fits 1972-1975 Chevrolet C10 Suburban, N/A
• Fits 1968-1969 Chevrolet C10 Suburban, N/A
• Fits 1975 Chevrolet C20, N/A
• Fits 1975 Chevrolet C30, N/A
• Fits 1975 Chevrolet El Camino, N/A
• Fits 1968-1973 Chevrolet El Camino, N/A
• Fits 1975 Chevrolet G10, N/A
• Fits 1975 Chevrolet G20, N/A
• Fits 1975 Chevrolet K10, N/A
• Fits 1968-1975 Chevrolet K10 Suburban, N/A
• Fits 1975 Chevrolet K20, N/A
• Fits 1975 Chevrolet K5 Blazer, N/A
• Fits 1975 GMC G15, N/A
• Fits 1971-1975 GMC Jimmy, N/A
• Fits 1971-1974 Chevrolet Blazer, N/A
• Fits 1971-1974 Chevrolet C20 Suburban, N/A
• Fits 1968-1969 Chevrolet C20 Suburban, N/A
• Fits 1971-1974 Chevrolet K20 Suburban, N/A
• Fits 1968-1969 Chevrolet K20 Suburban, N/A
• Fits 1971-1974 GMC G15/G1500 Van, N/A
• Fits 1967-1969 GMC G15/G1500 Van, N/A
• Fits 1971-1974 GMC G25/G2500 Van, N/A
• Fits 1967-1969 GMC G25/G2500 Van, N/A