Fleetguard AF987 Secondary Safety Air Filter – International DT466 DT530 World American The tractor protection valve is

The tractor protection valve is standard equipment on all heavy-duty Class 8 trucks:

Dyco: D065

Mack: 227QS33

Representative vehicles using the ISX15 CM2350 X101:

MX-13 (2017+)

Fleetguard AF987 Secondary Safety Air Filter – International DT466 DT530 World American The tractor protection valve isPremium aftermarket replacement secondary safety air filter from Fleetguard. The AF987 is an axial seal inner element that sits inside the primary filter and protects the engine if the primary is damaged or during servicing. It replaces Navistar 492920C91 and pairs with the AF979M primary on International 4700, 4900, 7100 and 8100 trucks and IC school buses with DT466, DT530 and T444E engines. Specifications Manufacturer Fleetguard Part Number AF987