INA ZS-2537 Engine Timing Crankshaft Sprocket

INA ZS-2537 Engine Timing Crankshaft Sprocket

INA ZS-2537 is an engine timing crankshaft sprocket built for OE-style fit and performance in a wide range of GM and Jeep applications. It is a direct replacement for vehicles such as the Chevrolet S10, Pontiac Fiero, and Jeep CJ7, with coverage spanning classic and late-model platforms.

Key Features

• Engine timing crankshaft sprocket for valve train service
• Manufactured from powdered metal, steel, or cast iron depending on application requirements
• Heat treated to exact hardness specifications
• Built to meet or exceed OE quality and performance targets
• Fits 1964-1993 applications across Chevrolet, GMC, Buick, Oldsmobile, Pontiac, and Jeep models
• Cross-reference: 5540370100

Detailed Description

This INA timing gear/sprocket is engineered for accurate crankshaft-to-camshaft timing in engines that require a precise OE-style replacement. The ZS-2537 part number is used across many GM passenger cars, trucks, vans, and SUVs, including Chevrolet Camaro, Chevrolet Astro, GMC Safari, Buick Skylark, and Pontiac Sunbird applications. If you are servicing a Chevrolet S10, GMC Sonoma, or Jeep CJ5/CJ7 timing system, INA ZS-2537 provides the correct crankshaft sprocket reference for the listed fitments.

INA uses quality-controlled materials and heat treatment processes to produce timing components with consistent hardness and durability. This helps maintain proper timing gear engagement during engine operation and supports reliable valve train function in compatible engines.

What It Is Used For

• Replacing a worn or damaged crankshaft timing sprocket
• Restoring correct camshaft and crankshaft timing alignment
• Addressing timing noise caused by gear wear
• Repairing timing system issues during engine rebuilds
• Servicing classic Chevrolet, GMC, Pontiac, Buick, Oldsmobile, and Jeep engines

Installation Notes and Tips

Verify the engine’s timing gear markings and application notes before installation. Some listed fitments include special notes such as intake manifold or crossflow configuration details, so confirm the engine setup against the vehicle’s original timing components. Replace related timing components as needed during service to maintain proper alignment and wear patterns.

Quality Assurance

INA designs this sprocket to meet or exceed OE quality and performance expectations. The part is manufactured from high-quality powdered metal, steel, or cast iron and heat treated to exact hardness specifications for consistent service life.