Detail Information
3919565 PISTON
Product Name: Piston — core moving component of diesel engines
Function: Installed inside the cylinder, the piston converts the thermal energy from fuel combustion into reciprocating mechanical motion, which is transferred through the connecting rod to the crankshaft to deliver power. It is a key component of the engine's power cycle and a primary replacement part during engine overhaul.
Applications:
- Engines: 6CT / 6CT8.3 / 6CTA / C8.3 series diesel engines
- Power rating: 240 HP (some sources list 260–300 HP range; verify against the specific engine model)
- Typical uses: Dongfeng Tianlong and other trucks, construction machinery, and generator sets
Key Specifications:
- Bore size: 114 mm; combustion chamber diameter approx. 65.5 mm
- Ring grooves: 3; piston rings are combination type with barrel-faced rings
- Material & process: high-strength alloy, precision-machined, heat-resistant, with standard surface treatment
Interchangeable Part Numbers: 3919565 = C3919565 = A3919565; related part numbers 3939930, 3923164, 3802429 (piston kit / overhaul kit)
Replacement Notes: Pistons are usually replaced in sets together with piston rings, piston pins and clips. Follow the specified piston-to-bore clearance during assembly, and pay attention to the installation direction mark on the piston crown to avoid incorrect installation, which can cause scoring or oil burning.
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HES Co., Ltd is a company specializing in engineering machinery parts and Sinotruk Shacman truck components. Over the years since its establishment, the company has maintained excellent collaborations with multiple manufacturers such as XCMG, SDLG, Sinotruk, and Shacman. Adhering to the principles of "Quality First, Customer Supremacy, Credibility, and Win-Win Cooperation," we are committed to sincerely cooperating with all clients and pursuing mutual development.
