Benz piston

Henweit Engine Parts Co., Ltd produces replacement pistons for Mercedes-Benz diesel engine families including OM352, OM366, OM364, OM360, OM401, OM402, OM422, OM355, OM441, and OM443. The listed oversizes include standard, 0.25 mm, and 0.50 mm, which are standard repair grades for cylinder-bore refinishing. The pistons are described as precision-engineered for compatibility and durability under high-stress conditions, though buyers should request detailed dimensional inspection reports and material specifications to confirm metallurgical equivalence to Mercedes-Benz original standards. The supplier is located at Room 1702, Choice Plaza, 448 Guangzhou Dadao South Road, Haizhu District, Guangzhou, China.

The material for heavy-duty diesel pistons in this engine class typically uses eutectic or hypereutectic aluminium-silicon alloys with 12-26 percent silicon content to optimise thermal expansion control and wear resistance at elevated combustion temperatures. Piston crown geometry, combustion-bowl profile, and pin-boss reinforcement vary between OM352 (naturally aspirated / turbocharged six-cylinder) and OM441/OM443 (V8) applications. Ring groove specifications, including axial width and radial depth for compression and oil-control rings, must match Mercedes-Benz dimensions to prevent blow-by or excessive oil consumption. Thermal stability testing and wear-resistance validation are referenced by the supplier but should be substantiated with test data.

These pistons target engine rebuild specialists, commercial-vehicle fleet workshops, and independent diesel-engine remanufacturers serving Mercedes-Benz truck, bus, and industrial applications. Sourcing considerations include whether the pistons are supplied with piston rings, gudgeon pins, and circlips as an assembly kit, or as bare pistons only. Buyers should confirm bore measurement protocols, as OM-series engines used both wet and dry liner designs across production eras, affecting honing procedures and final piston-to-wall clearance. The supplier mentions flexible MOQ and FOB/CIF shipment terms, though exact quantities and port details require direct confirmation.

Henweit Engine Parts Co., Ltd is based at Room 1702, Choice Plaza, No.448 Guangzhou Dadao South Road, Haizhu District, Guangzhou, China, 500143. The supplier holds both imported and harbor tier designations, suggesting some form of cross-border or verified sourcing credential on the platform, though the exact meaning of these tiers is not defined in the source data. The response rate is recorded at 0.00 percent with zero average response hours, which means buyers should not rely on platform messaging alone and should use direct contact methods for technical enquiries and order negotiation.

The company focuses specifically on engine components rather than broad-range automotive parts, which implies a degree of specialisation. However, the listing does not state whether Henweit manufactures pistons in-house or sources from a network of foundries and machine shops. No information is provided about factory floor space, CNC fleet, casting capacity, heat-treatment facilities, or in-house metrology. Buyers seeking TS 16949 or IATF 16949 certification, or specific foundry accreditations, should request documentation directly, as the listing does not assert these credentials.