Eco Gear

Eco Gear ring & pinion sets are the right choice when price is a factor and quality is essential. Eco gears are made of 8620 heated treated steel for strength and durability.

Master Install Kit

Premium master install kit uses only the highest quality components including Koyo brand bearings. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush collar (if applicable), threadlock, marking compound, brush, and gasket or RTV silicone.   

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Application: 1972-1998 GM 8.5" 10 Bolt Rearend

Compatible Carrier: 2.73-5.13

Ratio: 3.42

Pinion Spline: 30

Package Includes

1- GM 8.5" 3.42 Ring & Pinion set

1- GM 8.5" Master Install Kit

Shipping:  Most items ship within 24-48 hours of cleared payment. Please allow 2-10 business days for USPS shipping. 

Returns:    Returns on new, original box, clean, unused, unopened merchandise are accepted up to 30 days from the purchase date. 

                *All returns will be refunded less shipping and a 15% restocking fee.