INA ZS-S245 Engine Timing Camshaft Sprocket

INA ZS-S245 Engine Timing Camshaft Sprocket

The INA ZS-S245 engine timing camshaft sprocket is built for classic Oldsmobile valve train service where accurate cam timing matters. It is a direct-fit timing gear/sprocket solution for select 1950-1958 Oldsmobile 88, 98, and Starfire applications.

Key Features

• Engine timing camshaft sprocket for valve train repair
• Made from powdered metal, steel, or cast iron depending on application design
• Heat treated to exact hardness specifications for consistent durability
• OE-quality replacement engineered to meet or exceed original performance expectations
• INA part number ZS-S245 for easy identification

Detailed Description

INA timing gear and sprocket components are manufactured to OE-level standards using high-quality materials and controlled heat treatment. The ZS-S245 is intended for classic Oldsmobile timing service and is listed for 1957-1958 Oldsmobile 98 cam applications, 1957 Oldsmobile 88 cam applications, 1957 Oldsmobile Starfire cam applications, and 1950-1953 Oldsmobile 98 and 1950 Oldsmobile 88 applications after motor 8A-288505. This part cross-references 5540411100 for the same application. When servicing an Oldsmobile 98 camshaft sprocket or an Oldsmobile 88 timing gear application, ZS-S245 provides a cataloged replacement option with the correct fitment references.

What It Helps Fix

• Worn or damaged camshaft sprocket teeth
• Timing chain alignment issues caused by sprocket wear
• Excessive timing noise from a deteriorated gear surface
• Incorrect cam timing from a failed original sprocket
• Restoration needs on vintage Oldsmobile 88, 98, and Starfire engines

Installation Notes and Tips

Verify engine code and motor number before ordering, especially for 1950-1953 Oldsmobile 98 and 1950 Oldsmobile 88 applications that require use after motor 8A-288505. Inspect the timing chain, related gears, and valve train components during service so the new sprocket is installed with matched wear parts. Confirm the camshaft timing marks align exactly during assembly.

Quality Assurance

INA manufactures timing sprockets from high-grade metal materials and heat treats them to controlled hardness specifications to support OE-style fit and performance. The ZS-S245 is an INA timing gear/sprocket component built for consistent service in classic Oldsmobile engine timing repairs.