A-PLK5878L-AI Kit, Piston Liner; Thick Wall / Long Liner (5.152" Flange)One New Aftermarket Replacement Piston Liner Kit for Cummins 6CTA 8. 3 Engines This piston liner kit is designed for Cummins 6CTA 8. 3 (C Series) diesel engines equipped with the Thick Wall Long Liner configuration using Block 3802408. The kit services the cylinder assembly restoring compression, reducing oil consumption, and returning the engine to specification during an inframe or major overhaul. This is the Long Liner variant (9. 33" 237 mm liner