INA ZS-S375 Engine Timing Crankshaft Sprocket

INA Engine Timing Crankshaft Sprocket ZS-S375

Replace a worn timing sprocket with an INA engine timing crankshaft sprocket built for OE-level fit and performance. Part number ZS-S375 is used on a wide range of classic Chevrolet and GMC trucks, vans, and SUVs from the 1980s and early 1990s.

Key Features

• Engine timing crankshaft sprocket for valve train service
• Made from powdered metal, steel, or cast iron depending on application design
• Heat-treated to exact hardness specifications
• Built to meet or exceed OE quality and performance targets
• Direct replacement for applications using INA Global Number 554 0713 100

Detailed Description

INA ZS-S375 is an engine timing crankshaft sprocket for select Chevrolet and GMC applications, including Chevrolet C10, K5 Blazer, Blazer, P20, R10, and V20 models, as well as GMC Jimmy, C1500, K2500, and related trucks and vans. This sprocket is part of the engine timing system and is engineered to deliver the dimensional accuracy and durability expected in OE-style valve train components. If you are servicing a Chevrolet C20 Suburban, GMC P2500, or a GMC V1500 Suburban, ZS-S375 is a fitment-specific replacement to verify against your original part.

This part cross-references INA Global Number 554 0713 100 for the same application.

What It Helps Fix

• Timing chain drive wear from a damaged sprocket tooth profile
• Engine timing noise caused by worn valve train components
• Timing alignment issues during engine rebuild or service
• Reduced timing system reliability from corrosion or material fatigue
• Incorrect replacement part selection for vintage Chevrolet and GMC engines

Installation Notes and Tips

Confirm tooth count, crankshaft fit, and timing set compatibility before installation. Inspect the timing chain, guides, and related valve train components at the same time, since a new sprocket is often installed as part of a complete timing service. Verify vehicle application carefully for 1982-1993 Chevrolet and GMC models, including C/K trucks, Suburban variants, vans, and utility models.

Quality Assurance

INA manufactures timing gears and sprockets to OE-quality standards using controlled materials and heat treatment processes for consistent hardness and wear resistance.