D4BH Piston Assembly for Hyundai Truck Engines (23410-42170)
The piston assemblies for the Hyundai/Kia D4BH 2.5L diesel engine typically feature a cylinder bore diameter ranging from 91.1mm to 92mm. Constructed from ZL109 alloy, these pistons are specifically engineered to accommodate high compression ratios (21:1) and turbocharged applications. Such pistons are commonly utilized in D4BH and 4D56 engines.
Description
Engine Type: 2.5L Diesel (Turbocharged), 4-Cylinder, 8-Valve.
Piston Diameter: Standard size is typically 91.1 mm;
Specifications for certain aftermarket replacement parts are listed as 92 mm or 94 mm.
Compression Ratio: 21:1.
Material: ZL109.
Piston Type: Typically features valve recesses (commonly found in direct-injection engines).
Piston Pin Diameter: For this specific engine series, the diameter is typically 25 mm.
Piston Ring Grooves: Standard three-ring design (comprising the top compression ring, second compression ring, and oil ring), specifically engineered for high-compression 2.5T diesel engines.
