Answer: Changsha Haochang Machinery (HC Enginepart) provides complete EMD 710 overhaul kits for locomotive diesel engines, bundling the following components in a single, matched set: cylinder liners, pistons, piston rings, cylinder heads, main bearings, connecting rod bearings, and thrust bearings. All components are manufactured to OE specifications and certified under ISO 9001:2026, ensuring dimensional compatibility when installed together during an out-of-frame overhaul. Kits are available for both EMD 710 and legacy 645-series locomotive engines.