1961-1974 Expansion Tank or Radiator Overflow Hose - OEM Number(s) (3147585)
Designed to route excess coolant safely away from the radiator or expansion tank, this hose helps protect your cooling system from pressure buildup while keeping things clean and controlled under the hood. Unlike generic bulk hose, this reproduction is made with the correct thin wall construction and raised ribs, just like the originals GM used. It slips over the factory barb on the radiator or expansion tank for a proper fit and authentic appearance, making it ideal for restorations where correctness matters as much as reliability. It is a simple, inexpensive part that plays an important role in maintaining proper cooling function.
- Attaches to the barb on 1961-1974 radiators
- Attaches to 1961-1972 expansion tanks depending on application
- Correct thin wall extruded hose with original-style raised ribs
- 3/8" inside diameter for proper coolant flow
- 36" length allows correct routing and trimming
- Not used on 1973 and later recovery tank systems
Also known under these part numbers: (For reference only)
- 1219112
- 3147585
- 686420091110
- ZM-1119