INA ZS-2550 Engine Timing Gear

INA ZS-2550 Timing Gear for OE-Style Engine Service

INA ZS-2550 is an engine timing gear/sprocket built for direct replacement service in select GM applications. It is engineered to meet OE quality and performance expectations using durable powdered metal, steel, or cast iron construction with heat treatment to exact hardness specifications.

Key Features

• Engine timing gear/sprocket for valve train service
• OE-quality replacement design from INA
• Constructed from powdered metal, steel, or cast iron
• Heat treated to precise hardness specifications
• Cross-reference part number: 5540874100
• Part number: ZS-2550

Detailed Description

INA ZS-2550 is a timing gear intended for engine timing system repair where accurate gear engagement and durable material performance matter. This part number, ZS-2550, cross-references 5540874100 and is listed for select Chevrolet and Pontiac vehicles, including Camaro, Firebird, Caprice, Corvette, Impala, and Commercial Chassis applications. Compatible vehicle coverage includes Fits 1993-1997 Chevrolet Camaro, N/A; Fits 1993-1997 Pontiac Firebird, N/A; Fits 1994-1996 Chevrolet Caprice, N/A; Fits 1992-1996 Chevrolet Corvette, N/A; Fits 1994-1996 Chevrolet Impala, N/A; and Fits 1994 Chevrolet Commercial Chassis, N/A.

What It Helps Address

• Worn or damaged engine timing gear teeth
• Noise from timing system wear
• Timing irregularities caused by gear deterioration
• Service needs during engine front-end repair
• Replacement of an OE-style timing gear on GM V8 applications

Installation Notes and Tips

Verify engine application by year, make, model, and timing component configuration before installation. Inspect related timing components, seals, and drive parts during service so the new gear is installed into a clean, properly aligned timing system. Use the vehicle service manual for torque, alignment, and timing procedures.

Quality Assurance

INA timing gears are manufactured to OE-level quality targets and use controlled material selection and heat treatment to help maintain consistent hardness and wear characteristics.