Our MS22066 (AN800 3/8-24) style fitting that mates to a SEA-4 7/16-20 port.
Has internal poppet-type check valve. Includes cap and chain.
This part is not certified.
SAE-4 to AN-800-3 (MS22066) fill valve
$98.00
SAE-4-to-AN-800-3-adapter
Fill port SCOTT (26875) B.H. fill x AN800-3