Mercury 0.5 mm Oversize Piston Assy (735-835002T)

Mercury 0.5 mm Oversize Piston Assy (735-835002T)

The Mercury 0.5 mm Oversize Piston Assembly (735-835002T) is a critical internal engine component used in Mercury marine engines to ensure accurate tolerances, balanced compression, and reliable power generation after cylinder overhaul. In Mercury engines, the piston transmits combustion pressure to the crankshaft, generating the engine's fundamental power. The 0.5 mm oversize helps recapture ideal clearances in honed or widened cylinders.

This complete piston set, coded 735-835002T, features a balanced design encompassing the piston body, ring grooves, and pin fit. It is manufactured from durable alloys that maintain their shape under high temperatures and pressures. Correct sizing and surface finish reduce compression loss, balance oil consumption, and contribute to quieter engine operation. Using the wrong size piston can lead to knocking, excessive friction, and serious engine damage, making correct oversize selection crucial.

Mercury Oversize Piston Specifications

The 735-835002T Mercury 0.5 mm oversize piston assembly offers near-factory performance in revised engines thanks to its precise dimensions, balanced weight distribution, and reliable piston ring fit. Correct installation and proper break-in reduce friction, balance compression, and extend engine life. Using genuine Mercury spare parts provides a significant advantage in terms of system compatibility and long-term engine safety.