COMPATIBILITY: Fits for Spicer drivelines 1610 / 1710 / 1760 / 1810 / 1880 Series, Spicer SPL 140 / 170 / 250 Life Series, Meritor (Rockwell) 16N / 17N / 18N / 1710 Series, Meritor RPL 20 / 25 Permalube Series. (Fit virtually all Class 6 and 8 Trucks and Machinery)