Bosch PES Series Plunger Matching Parts are core precision spare parts for Bosch mechanical inline fuel injection pumps, applicable to old diesel engines of construction machinery, fishing vessels and generator sets. Consisting of paired and ground plunger and barrel, it accurately adjusts fuel supply volume via plunger helical groove and continuously builds stable high fuel pressure. Finely processed from high-hardness alloy steel with micron-level clearance control and strong pressure resistance, it is widely used for fuel pump overhaul, equipment replacement and export supporting.

🔵 Micron Precision Matching Grinding, No Pressure Leakage Under High-pressure Working Conditions
🔵 High-hardness Alloy Steel, Wear-resistant with Long Service Life
🔵 OEM-standard Helical Groove for Precise Fuel Metering & Lower Fuel Consumption
🔵 Perfectly Compatible with Full Bosch PES Mechanical Pumps, Easy Replacement
🔵 Full Models In Stock, Support Bulk Supply for Maintenance & Export