Suspension Spring ( Coil / Leaf ): Specifications
| Super Duty F-250, F-350 Wide Frame | Leaf spring-to-axle U-bolt nut | 185 ft. lbs. |
| Leaf spring-to-front spring hanger bracket nut and bolt | 185 ft. lbs. | |
| Leaf spring-to-rear shackle nut and bolt | 185 ft. lbs. | |
| Super Duty F-350 Narrow Frame | Leaf spring-to-axle U-bolt nut | 185 ft. lbs. |
| Leaf Spring to front spring hanger bracket nut and bolt | 185 ft. lbs. | |
| Leaf spring-to-rear shackle nut and bolt | 166 ft. lbs. |