BCBC S459 Engine Timing Crankshaft Sprocket

Overview

Melling S459 is an engine timing crankshaft sprocket for stock applications that require a direct replacement timing component. It is built for Toyota engines in Celica, Corona, and Pickup applications and is identified by part number S459.

Key Features

• Engine timing crankshaft sprocket for valve train service
• Stock application fitment for original-style engine rebuilds
• Manufactured to required specifications using current production processes
• Available in steel or powdered metal construction within the Melling timing gear and sprocket program
• One-keyway design for the listed application

Detailed Description

The Melling S459 timing crankshaft sprocket is part of the brand’s timing gear and sprocket program, which includes individual sprockets as well as complete timing kit options. For Toyota Celica, Toyota Corona, and Toyota Pickup engines in the listed stock applications, this sprocket provides the timing drive component needed during engine service or rebuild work. The S459 part number is also cross-referenced to 13521-38010 and G50068 for the same application.

Melling manufactures these sprockets to the required specifications with materials selected for engine timing service. The product line includes steel and powdered metal options, giving rebuilders a timing component built around the needs of the application rather than a universal fit.

What It Is Used For

• Replacing a worn or damaged crankshaft sprocket during engine rebuilds
• Restoring proper timing drive engagement in stock engine applications
• Addressing timing noise or wear related to sprocket deterioration
• Supporting accurate cam-to-crank timing setup during service

Installation Notes and Tips

Verify the engine application, timing set configuration, and keyway requirements before installation. Match the sprocket to the listed stock fitment and confirm compatibility with the timing chain and related components used in the engine build. Professional installation and timing verification are recommended after assembly.

Quality Assurance

Melling positions this sprocket within its timing gear and sprocket program for engine rebuild use, with manufacturing focused on required specifications and modern production methods.