Add Motorcraft Additive Friction Modifier to your differential to reduce hypoid gear noise levels and add lubricity when changing the gears or limited slip differential. This friction modifier is engineered to meet Ford’s stringent EST-M2C118-A specifications and is intended for use on certain limited slip differentials.  

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Sold Individually 
Genuine Ford Part
Direct-Fit Replacement 

MOTORCRAFT ADDITIVE FRICTION MODIFIER FOR LIMITED SLIP DIFFERENTIALS - 4 OZ. BOT

$7.99Price