Then we subjected them to the corrosive effects of 45 hours in a mud bath.
Dana Spicer SPL55/1480WJ Series Blue-Coated Axle Shaft Universal Joint - SPL55-1480XC How did we make Spicer u-joints for Dana axles even tougher?.We covered our u-joints with a high-performance, high-durability blue coating. Tests results prove that the beauty of the Spicer Blue-Coated Performance U-joint is more than skin deepits beauty stands up to the elements!Spicer Blue-Coated Performance U-joints (SPL 55-3X equivalent) underwent a multi-step painting process which included cleaning with a zinc phosphate solution and the application of a high-performance primer, followed by a top layer of our signature blue coating. Axle shaft universal joint; Non-greaseable; Blue coated U-joint kit; SPL55/1480 ISR WJ;California Residents: WARNING We gave them the blues.