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DDEC IV through DDEC VI)
The valve threads inline between the brake-application source and the service brake chambers — most often direct-mounted to the tractor protection valve — and dumps trapped air locally on release so the chambers exhaust faster than they could through the foot valve alone
and on-highway light-duty trucks
Dayton Parts: 329-194U
Hendrickson: S-21800
Freightliner 16-13801-000, 16-16773-000 Air Spring Replacement | WA01-9781C Push Pull Valve DDEC IV through DDEC VI)The World American WA01 9781C is a rolling lobe air spring for Freightliner cab and chassis air suspensions originally equipped with Freightliner 16 13801 000, 16 16773 000, or the A16 17574 001 002 supersession family. It also replaces Firestone W01 358 9781 W01 377 9781 and ContiTech AS9781. Specifications Manufacturer World American Part Number WA01 9781C Part Type Air Spring (Rolling Lobe) Design Height 12. 5 in Min Max Height 8. 3 in 23. 0 in
