Hangzhou XC Machinery Co., Ltd. supplies aftermarket new spare parts for the Cummins QSB5.9 diesel engine used in excavators and other construction equipment. This range covers the internal components most commonly required during engine overhaul and rebuild, including liner kits, piston ring kits, snap rings, main bearings, valve guides, intake valves and gasket kits.
The QSB5.9 is a widely used Cummins engine platform in mid-size excavators. When an engine reaches its service interval or shows wear in the cylinder and valve train, replacing the internal wear parts as a set helps restore compression, oil control and sealing performance. The parts listed here are offered as individual items or as combined kits, depending on your rebuild requirements.
| Part Number | QSB5.9 Engine spare parts |
| Machine Model | QSB5.9 diesel engine (excavator application) |
| Condition | Aftermarket New |
| Type | Liner Kit, Piston Ring Kit, Snap Ring, Main Bearing, Valve Guide, Intake Valve, Gasket Kit |
These QSB5.9 engine components are intended for excavators and other equipment powered by the Cummins QSB5.9 diesel engine. They are suitable for workshops, rebuilders, fleet maintenance teams and parts distributors handling engine repair and overhaul work.
Hangzhou XC Machinery Co., Ltd. is a China-based parts wholesaler serving the construction equipment industry for over 8 years. The company supplies excavator hydraulic pump and parts, engine parts, undercarriage parts, electric parts, seal kits, filters, final drive and gear parts, hydraulic breakers, rock buckets and scanner diagnosers. Customers are served across the US, Canada, Turkey, Italy, Brazil, Colombia, South Africa, UAE and India, among other markets.
Parts are offered for South Korean brands such as Daewoo, Doosan, Hyundai, Volvo and Samsung; Japanese brands such as Komatsu, Hitachi, Kobelco, Kato, Isuzu and Mitsubishi; and Chinese brands such as SDLG, Sany, Zoomlion and Liugong. OEM and genuine parts options are available depending on the item.
To help us match the correct parts to your engine, please confirm the engine model, machine model and the specific part numbers or component list you require. If you are rebuilding a QSB5.9, a combined liner kit, piston ring kit, bearing set and gasket kit can be quoted together.
This product range consists of aftermarket new internal spare parts for the Cummins QSB5.9 diesel engine, which is commonly used in excavators and other construction equipment. The range includes liner kits, piston ring kits, snap rings, main bearings, valve guides, intake valves, and gasket kits. These components are typically used during engine overhaul or rebuild to restore compression, oil control, and sealing performance. Parts are available as individual items or as combined kits to suit different rebuild requirements.
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