PistonA piston supplied as an aftermarket replacement, contact us to verify fit. Pistons turn up in hydraulic cylinders, hydraulic pumps and motors, and engine assemblies, and the right tolerances are not negotiable. A worn or scored piston bypasses pressure, drops lift speed, and burns through oil. Forklift repair shops install replacement pistons during cylinder and pump rebuilds when a bench inspection shows the bore is still serviceable but the piston is past spec. Fleet operators schedule the work during major PMs to head off the slow loss of capacity that catches operators by surprise.Aftermarket replacement part, cross-references original part number AC3EB-15-11830.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC3EB-15-11830, ac3eb-15-11830, AC3EB1511830, ac3eb1511830 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.