Hold the Pressure: Vintage Radiator Caps & Safety Covers
The radiator cap is more than just a lid—it is a precision pressure valve that keeps your engine from boiling over. On vintage cars, a worn-out cap with weak spring tension lowers the boiling point of your coolant, leading to overheating in traffic even if your water pump and thermostat are working perfectly.
At Old Car Parts NW, we stock authentic NORS (New Old Replacement Stock) radiator caps from legendary brands like Stant, AC Delco, and Wayne.
Why Pressure Ratings Matter
One size does not fit all. Putting a modern high-pressure cap on a vintage radiator can blow the seams apart. We stock the correct PSI ratings for your specific era:
4 LB & 7 LB Caps: Essential for pre-1960s systems and non-pressurized overflow tanks to protect delicate soldered seams.
13 LB - 16 LB Caps: Standard for 1960s-70s muscle cars and high-performance V8s.
Safety Lever Caps: Features a built-in lever to safely release pressure before opening, preventing steam burns.
Our Inventory:
Standard Pressure Caps: The classic "eared" design.
Safety Release Caps: For added protection during maintenance.
Locking Caps: Vintage accessory caps to prevent theft and tampering.
