Product Details
This Whiteline Rear Spring Bushing Kit fits the 1968-1972 GMC K35/K3500 Pickup. You receive 12 bushings, 6 tubes, and grease. It is listed for the C/K chassis. Position: rear. The listing names the Pickup trim. The part number is W73477.
On a leaf-sprung vehicle the spring eyes and shackles pivot on bushings, and they take the movement every time the axle moves. Worn rubber lets the axle shift and clunk, and heavy loads speed that up. Polyurethane resists deflection far better than the soft rubber it replaces.
Expect a moderate job of about 2 hours. Get the car aligned once it is back on the ground.
Features
- Install guide: Written install instructions are included with the part.
- Bushing compound: The elastomer formulation is chosen to shrug off oil, grease, ozone, and the elements.
- Self-lubricating: Built-in grease reservoirs provide continual lubrication and reduce friction.
- Grease: Molybdenum disulfide grease comes with it for a longer service life.
- Bushing material: The bushing material is polyurethane, a firmer choice than rubber.
Specifications
| Part Number | W73477 |
| Part Name | Spring Bushings |
| Vehicle | 1968-1972 GMC K35/K3500 Pickup |
| Drivetrain | 4WD |
| Chassis Code | C/K |
| Bushing Color | Black |
| Bushing Inside Diameter | 19 mm |
| Bushing Length | 37.5 mm |
| Bushing Material | Polyurethane |
| Bushing Outside Diameter | 38.6 mm |
| Durometer | 85 |
| Grade Type | Regular |
| Installation Difficulty | Moderate |
| Installation Time (hrs) | 2 |
| Kit Contents | 12 Bushings, 6 Tubes, Grease |
| Vehicle Placement | Rear |
| Wheel Alignment Required | Yes |
| Notes | Fits vehicles with 1.5" Frame Shackle and 1.5" Main Eye (1700-2800# Axle Rating) |
Fitment for K35/K3500 spring bushings
Fits the 1968-1972 GMC K35/K3500 Pickup. Each model year is listed below.

