Changsha Haochang Machinery (HC Enginepart) is a China-based manufacturer and exporter of replacement engine parts for Mitsubishi S6R and S6R2 series diesel engines, covering crankshafts, cylinder liners, piston rings, pistons, cylinder heads, and bearings. HC operates under a manufacturing-plus-trading integrated model with ISO 9001:2015 certification, producing parts to OE specifications. For the S6R/S6R2 — a 6-cylinder in-line engine with a 170 mm bore and 29.96 L displacement used in generator sets, marine auxiliary, industrial, and telecom applications — HC supports both standard replacement supply and custom development from drawings or samples. The company also helps OEM customers and distributors build their own brands. Request quotations through hc-enginepart.com