BCBC S1239 Engine Timing Crankshaft Sprocket

Engine Timing Crankshaft Sprocket

Melling S1239 is a standard replacement engine timing crankshaft sprocket made from high alloy steel for stock applications. It is manufactured in the USA and built to required specifications for engine rebuild work.

• High alloy steel construction for timing system durability.
• Standard replacement grade for stock engine service.
• 29-tooth design with a single keyway.
• Made in the USA using current manufacturing processes.

Fitment Details

Compatible with a wide range of Ford, Lincoln, and Mazda applications. Fits 2011-2019 Ford Taurus, N/A; Fits 2011-2018 Ford Edge, N/A; Fits 2015-2017 Ford Expedition, N/A; Fits 2011-2017 Ford Explorer, N/A; Fits 2011-2017 Ford Flex, N/A; Fits 2011-2017 Ford Mustang, N/A; Fits 2011-2016 Ford F-150, N/A; Fits 2015-2016 Ford Transit-150, N/A; Fits 2015-2016 Ford Transit-250, N/A; Fits 2015-2016 Ford Transit-350, N/A; Fits 2015-2016 Ford Transit-350 HD, N/A; Fits 2011-2016 Lincoln MKS, N/A; Fits 2011-2016 Lincoln MKT, N/A; Fits 2011-2016 Lincoln MKX, N/A; Fits 2011-2016 Lincoln MKZ, N/A; Fits 2012-2015 Mazda CX-9, N/A; Fits 2012-2013 Mazda 6, N/A; Fits 2011-2012 Ford Fusion, N/A; Fits 2013-2019 Ford Police Interceptor Sedan, N/A; Fits 2013-2017 Ford Police Interceptor Utility, N/A; Fits 2015-2017 Lincoln Navigator, N/A; Fits 2017 Lincoln Continental, N/A. Special notes apply to 2011 Mazda 6 and 2011 Mazda CX-9 with silent primary timing chain stock applications.

Used For

• Replacing a worn or damaged crankshaft sprocket in the timing drive.
• Restoring correct chain engagement in stock engine builds.
• Addressing timing noise or chain tracking issues tied to sprocket wear.
• Supporting engine rebuilds that require new timing components.

Installation Notes

Verify tooth count, keyway count, inside diameter, and outside diameter before installation. Confirm the application notes for stock or silent primary timing chain configurations where listed. This part cross-references Cloyes S995 and SA Gear S1324 for the same application.

Quality Assurance

Melling manufactures this sprocket to required specifications using high-quality materials and current production methods. The S1239 is part of Melling's timing gear and sprocket program for engine rebuild service.