40108742 GM 8.5 8.6 3.23 Ratio AAM OE Ring & Pinion Gear Set
12479392, 26016283, 26015059, 40025148, 40053035 - Caprice, Impala, Roadmaster, Fleetwood, Sierra, Yukon, Silverado 1980 - 2018 // Accepts ABS tone ring on pinion stem for B&D Cars. May also be used for non-abs applications.
AAM ring and pinion gear sets are uniquely designed to match the requirements the OEM Ring & Pinion designated for your specific vehicle. All performance factors for the size and weight of the specific vehicle must be taken into account. Our innovative "Two-Cut" manufacturing process ensures the lowest tolerances possible for the quiet operation required by our OEM Ring & Pinion customers. This "Two-Cut" design also allows for easier set up in the aftermarket replacement business. The combination of materials, heat treating and cut geometry allows for a gear set that has ten-times the life of a non-OEM Ring & Pinion gear set.