Cloyes S412T Engine Timing Camshaft Sprocket - Front

Cloyes S412T Timing Camshaft Sprocket

The Cloyes S412T is a specific-fit engine timing camshaft sprocket for Jeep applications that require a 46-tooth, single-row timing gear. Built from cast material with a precision-machined bore and keyway notch, it is made for accurate fitment in timing system service on Jeep CJ5, CJ7, Cherokee, J10, J20, and Wagoneer models.

For Jeep CJ5 timing sprocket replacement or Jeep Wagoneer engine rebuild work, this sprocket is designed to match the original application and support proper camshaft timing. The S412T part number is also referenced as 3197138 for the same application.

Key Features

• Engine timing camshaft sprocket for Jeep timing system service
• Specific fit design for application-matched installation
• Cast construction with gray finish
• 46-tooth sprocket with 1.0 chain row quantity
• Precision-machined bore for true fit
• Helical tooth form for quieter operation
• Keyway notch included for indexed installation
• Cloyes S412T cross-references 3197138

Detailed Description

Cloyes S412T is an engine timing camshaft sprocket used in the valve train timing system, where it works with the timing chain, tensioners, and guides to maintain correct camshaft synchronization. This sprocket is built for Jeep front-engine applications and is listed for 1971-1981 Jeep CJ5, 1976-1981 Jeep CJ7, 1974-1980 Jeep Cherokee, 1974-1980 Jeep J10, 1974-1980 Jeep J20, and 1972-1980 Jeep Wagoneer. If you are replacing a Jeep CJ7 timing camshaft sprocket or servicing a Jeep Cherokee front timing setup, the S412T provides the application-specific fit needed for rebuild and replacement work.

Cloyes manufactures timing components using CAD-based design, advanced materials, and functional testing for durability and performance. The helical tooth profile helps reduce operating noise, while the precision-machined bore supports accurate alignment during installation. The S412T part number should be matched to the vehicle application before installation.

Common Problems This Part Can Address

• Worn or damaged camshaft sprocket teeth
• Timing chain noise from an aging front timing set
• Incorrect camshaft timing caused by sprocket wear
• Service needs during engine rebuilds
• Replacement of a timing gear with poor bore fit or keyway wear

Installation Notes and Tips

Verify engine application, tooth count, and front timing configuration before installation. Cloyes recommends replacing the timing chain, tensioner(s), sprocket(s), and guide(s) together when servicing the chain, since these parts work as a system to keep chain tension and timing alignment consistent. Confirm the keyway notch orientation and bore fit during assembly, and follow the vehicle service manual for timing marks and torque procedures.

Quality Assurance

Cloyes timing sprockets are CAD designed, manufactured with advanced materials, and tested for function and durability to support reliable engine service. The S412T is built for dependable timing system replacement in Jeep CJ5, CJ7, Cherokee, J10, J20, and Wagoneer applications.