Detroit TrueTrac Differential - 30 Spline - 3.73 Ratio and Up - 8.875 in - GM 12-Bolt 20-OTL-NR-ML Designed to stabilize fuel curve

Designed to stabilize fuel curve in carburetor fuel bowls

low pour-point

Black Storage Pouch

Years of engineering experience and modern technology allowed Performance Distributors to develop a high voltage coil and high dwell module that would turn the high revas needed for todayas racing engines

Black Plastic Housing

Detroit TrueTrac Differential - 30 Spline - 3.73 Ratio and Up - 8.875 in - GM 12-Bolt 20-OTL-NR-ML Designed to stabilize fuel curveDetroit Truetrac 913A315 30 Spline 1. 30 in. Axle Shaft Diameter 3. 73 and Up Ring Gear Pinion Ratio First Helical Gear Differential Eliminates Need For Wearable Parts Maintenance Free Traction Proven Design And Effective Performance Durable Smooth Quiet Operation The legendary Detroit Locker began the revolution in performance differentials and still leads the industry today as an Eaton brand. The Detroit Locker is the most durable and dependable