Weifu 612601080442 BP22B4 Fuel Injection Pump Assembly

The Weifu 612601080442 (BP22B4) is a high-pressure inline fuel injection pump designed for the Weichai WP10.270E32 9.7-liter six-cylinder diesel engine. It features a Bosch P-type pump architecture with mechanical governor and electric shut-off solenoid. The pump assembly integrates feed pump, plunger barrels, delivery valves, and drive shaft components calibrated for Euro III to Euro V emission standards. It serves as a direct replacement for Weichai OE part number 612601080442. Compatible with heavy-duty truck platforms including Sinotruk Howo, Shaanxi, Foton, Beiben, and Dongfeng models equipped with the WP10 engine series. Maintenance requires periodic inspection of plunger wear, delivery valve sealing, and governor calibration to maintain injection pressure integrity.