Big4x4ride
Red Skull Member
Are the seals cross compatible with the other years? The ones I installed are the two piece where the outer metal portion presses into the housing, and then there's an interior metal portion that spins inside of it with a rubber section pressing against the shaft. It sounds like that might be my issue. I wonder if the 05+ shafts have a smaller seal diameter to better fit that double seal design?
When I was building my 99-04 front, I measured the older axles seals that were used on the KP stuff and they seemed like they would work. I had new seals for my application and used them, but did debate going with the older style.
99-04 Super Duty - Spicer P/N 2019816 ID: 1.564" OD: 2.620"
Kingpin 60 axles - Spicer P/N 36487 ID: 1.570" OD: 2.630"