Description
If you’re building a truck that needs reliable, predictable power delivery without sacrificing daily usability, a 3.42 gear ratio strikes the ideal balance between acceleration and highway cruising. This GM 12-bolt kit delivers the durability you need for consistent performance, whether you’re towing, tackling rough terrain, or enjoying spirited driving. With a 30-spline pinion and proven 3 Series construction, you get a bulletproof differential setup that handles real-world demands.
- 3.42 gear ratio
- 30-spline pinion
- GM 12-bolt housing
- 3 Series design
- 8.875 in diameter
- Complete kit
- MPN: 49-0070-1









