Restoration Correct Original AC Delco Part Correct Fit And Finish With Turning Ears Fits V6 And V8 Engines Made In USA The radiator cap on your 1978-1987 El Camino can fail due to wear and fatique, replace it with this original AC Delco part from The El Camino Store. The radiator cap actually increases the boiling point of your coolant by about 45 F (25 C). How does this simple cap do this? The same way a pressure cooker increases the boiling temperature of water. The cap is actually a pressure release valve, and on cars it is usually set to 15 psi. The boiling point of water increases when the water is placed under pressure.When the fluid in the cooling system heats up, it expands, causing the pressure to build up. The cap is the only place where this pressure can escape, so the setting of the spring on the cap determines the maximum pressure in the cooling system. Replace your 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, El Camino radiator cap before it fails. Trust The El Camino Store for all your parts needs.
| Make | Model | Years |
| Chevrolet | El Camino | 1978 - 1987 |
| GMC | Caballero | 1978 - 1987 |
