PACCAR 1931136 VGT Turbo Actuator Assembly

This variable geometry turbocharger (VGT) electronic actuator regulates boost pressure on PACCAR MX13 EPA13 diesel engines. It is engineered to interface with Holset HE500VG and HE400VG turbocharger assemblies, providing precise vane position control via a 12V DC servo motor and integrated position sensor. The actuator assembly includes the electronic control module, gear train, and mounting bracket calibrated for the specific turbocharger housing. It features a B-type electrical connector with a 400 mm harness length. The unit requires OEM-level software calibration upon installation to synchronize the actuator position with the engine control module (ECM) for correct boost mapping and engine brake function. Cross-references include PACCAR service numbers 1931136, 2037561, 1931136PEX, 2037561PEX, and 2037561PRX, as well as Holset manufacturing numbers 4034285 and 5322874. Applications cover 2014-2017 model year Kenworth and Peterbilt heavy-duty trucks equipped with PACCAR MX13 and MX11 EPA13 engines.