The Universal Kit will eliminate the need to measure your spindle. Air-Tight's Universal Kit comes with (3) different inner dimension size shims. One or none of the shims may be used in putting on the stainless steel bushing. Note: The universal kit for the 5 lug/ 3500lb has 3 shims. The universal kit for the 6 lug/ 5200 and the 8 lug 7000lb has 1 shim.
Use the cross-reference chart to see if you trailer manufacturer uses U.F.P. spindles. The U.F.P. stainless steel bushing does not have to be removed because it is sealed to the spindle.
Full Kit Components
Chrome Air Cap
Bushing, stainless steel
Super SealTM
Diaphragm
Sport needle
Bonding agent
Shims
Seal Specifications
ID 1 7/8
Double-lip
Specially molded composition
Gauge pressure recommendations
5-10 p.s.i.