Strange Engineering D1541 GM 12 Bolt 35 Spline 4 Series Lightweight Spool

Strange Engineering D1541 GM 12 Bolt 35 Spline 4 Series Lightweight Spool. Strange Engineering Lightweight Steel Spool for GM 12 Bolt Car – 35 Spline – 4 Series – D1541. Manufactured from 4140 forged steel. Lightened to reduce rotating weight. Broached 35 spline with 30° pressure angle. Final turn operation after heat treat to ensure […]