Car Radiator Cap Sizes

By daniel stern part 2 of a series the radiator cap seals the coolant off from the outside air and allows a certain amount of pressure to build in the cooling system to raise the boiling point of the coolant in the system.

Car radiator cap sizes.

M m radiator cap cp series 52 0mm 81 0mm 39 5mm radiator cap ct series 63 0mm 64 0mm 39 5mm radiator cap cw series 39 0mm 53 0mm 59 0mm 34 5mm 38 5mm radiator cap cr series 63 0mm 21 0mm radiator cap cu series 50 0mm 65 0mm 38 0mm radiator cap cx series 29 5mm 49 5mm. Radiator caps are critical to catch coolant overflow keeping your engine cooling system operating at optimal pressure and temperature and your vehicle operating at optimal performance. 65mm ear to ear. Meets original equipment specifications.

The surprisingly wide range of radiator caps. 1913 14 dogbone boyce moto meter universal model car radiator cap hood ornament. Radiator cap cv series 18 5mm 34 0mm 81 0mm 2 75. Plastic cap threaded.

The purpose of this document is to provide dimensions for the different pressure ratings of boyonet type radiator pressure caps and filler necks. Gates manufactures our oe quality radiator caps and cool control caps for your heavy duty vehicle applications with a selection of durable wear resistant radiator caps for automotive applications without. A faulty radiator cap can cause your car to boil over at a lower temperature. 1 48 2 54 plastic cap threaded.

Radiator caps and filler necks j164 200502 this sae standard was developed primarily for passenger car and truck application but may be used in marine industrial and similar applications. Click product link for more information. Vintage radiator cap mascot hood ornament brass statue street boy rat rod figure. They are mostly standard sizes but some of the older ones were taller than later ones.

If you have the stock radiator then you want the stock pressure cap. The swiv el design allows the cap to be installed and removed much easier than conventional radiator caps. 2 36 surge tank cap. Higher pressure will tear the radiator apart.

Click product link for more information. For example let s say your classic car normally runs at 180 190 and boiling is not a concern. Made from premium materials. 1 08 3 11 plastic cap threaded.

1 3 bar 18lb pressure. Then on a hot day the temperature goes to 200 210. The real purpose of pressurizing is to give drivers a higher operating zone in case of extreme conditions. Test or replace the coolant cap when servicing the cooling system.

A system with 15 psi cap will add 45 degrees for a final boiling point of 268 degrees. Rubber upper and lower seals. Think of the cap rating in pounds per square inch and the force pulling the tank apart as the psi times the square inches of tank surface.