1999-04 F-150 SVT Lightning Yukon 9.75 Differential Cross Pin by Yukon

Ford Lightning Differential Cross Pin K
eep your differential spider gears in place with this 1999-2004 Ford Lightning differential cross pin! Over time, grooves can wear into the cross pin of your differential. This can cause unwanted play inside your differential. Yukon's cross pin shaft is a direct replacement for your factory 9.75" rear end. The shaft features a heavy duty steel construction that's built to last! Factory style notches are in place for a quick and easy installation!

FAQ: My cross-pin shaft is scored, and the spider gears wore into it. What happened?
When a differential is traveling in a straight line, the spider gears remain motionless in the carrier. It is not until one tire turns faster or slower than the other that the spider gears rotate on the cross pin shaft. This most commonly happens when turning a corner. However, other situations cause the spider gears to spin much more rapidly, such as getting stuck in the mud or snow. When this happens, the spider gears can rotate on the cross pin shaft so quickly that it slings all the differential oil away from it, giving way to metal-on-metal wear. This causes the cross pin shaft and the gear to get so hot that they melt each other, sometimes to the point where they weld themselves together. Damage such as this can not only damage the spider gear set, but also destroy the carrier and ring & pinion set.

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