Ford 9" Solid Pinion Spacer Kit Shims Included Alternators and Brackets They're forged from aerospace alloy

They're forged from aerospace alloy and heat-treated prior to thread rolling and machining

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which provides a tougher

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Ford 9" Solid Pinion Spacer Kit Shims Included Alternators and Brackets They're forged from aerospace alloyPart Number: AF5075 1016 this solid pinion spacer kit is designed to install on the pinion and preloads the pinion bearings. This is an upgrade from the crush sleeve which is prone to failure on your Aeroflow performance differential. Eliminate the worry of altering bearing preload when changing yokes while also increasing the life of your gear set by making the assembly more stable under extreme loads. Includes four shims for setting and maintaining