Richmond Gear 4.88 Ratio. Fits 4 series spools. 9 3/4" ring gear diameter, 1.626" diameter pinion bearing stem, 29 spline pinion, 9310 material. For OE Carriers 4.10 and numerically higher. 1.325" mounting distance. 

*Dana 60™ is a trademark of Dana Limited. MW products are not manufactured or authorized by Dana™.