Eaton Detroit Truetrac Differential 31 Spline 1.32in Axle Shaft Dia Front 8.8in/Reverse Rear 8.8in 912A686 Eaton Detroit Truetrac Differential 31 Spline 1.32in Axle Shaft Dia Front 8.8in/Reverse Rear 8.8in 912A686 The Detroit Truetrac was the first helical gear differential ever introduced into the... MSRP: Was: Now: $799.99 Add to Cart The item has been added