AFA Industries has announced the availability of in-frame and complete overhaul kits for Cummins ISX15/QSX15 engines containing the newest design carbon scraper ring (also known as APR or anti-polishing ring) pistons and liners. The ISX15 and QSX15 engines are used in on-highway trucks, buses, motorhomes, industrial and off-highway applications. These kits and components are in addition to AFA’s complete offering of engine parts for the ISX/QSX engines.
This new design carbon scraper ring liner and low top ring piston combination reduce the carbon build-up and polishing of the cylinder walls by scraping the carbon from the sides of the piston, which also helps the engine by lowering oil consumption and increased oil filter flow, according to the announcement.
The kits include a specially hardened cylinder liner that is application-engineered for strength and durability, the company states. Specially machined for the carbon scraper ring that is installed at the top of the liner, the low top ring pistons are high-strength forged steel to ensure longer service life and are coated with a special manganese phosphate coating that reduces wear and improves break-in performance on initial start-up. AFA manufactures all of its gaskets and seals. A special tool must be used to install the piston in the liner.
See the chart below for particular CPL numbers and consult OE reference materials for exact applications.