Water Filler Cap Assembly

MODEL 390 WITH 1" MNPT

The Model 390 has an automotive type radiator cap. It is supplied with a 3/16" hole in the filler neck. Two choices of radiator caps are available.

Model Number

Radiator Cap
Pressure Rating

390-7
390-15

7 lb.
15 lb.

MODEL 29508 WITH 1" MNPT

The Model 29508 has an automotive type radiator cap. It is supplied with a 1/4" OD vent tube in the filler neck Two choices of radiator caps are available.

Model Number

Radiator Cap
Pressure Rating

29508-7
29508-15

7 lb.
15 lb.

MODEL 1794 WITH 2" MNPT

The Model 29508 has a truck radiator cap. It is supplied with a 5/16" OD vent tube in the filler neck Two choices of radiator caps are available.

Model Number

Radiator Cap
Pressure Rating

1794-7
1794-15

7 lb.
15 lb.

REPLACEMENT
RADIATOR CAP

7#
15#

P/N
A-3352
A-733

REPLACEMENT
RADIATOR CAP

7#
15#

P/N
A-3352
A-733

REPLACEMENT
RADIATOR CAP

7#
15#

P/N
A-20045
A-29739