This Allstar Performance overflow check valve is a spring-loaded flapper-style valve built for Allstar overflow catch cans. It measures 9.75in long with a 1.25in OD and is machined from aluminum with a natural finish.
Spec Sheet: Allstar Spec Sheet
Compatibility
This is a universal-fit component designed for use with Allstar overflow catch cans and is not limited to a specific vehicle make or model. Confirm the OD and length match your catch can before ordering.
FAQ
What size is this check valve?
ALL40203 measures 9.75in long with a 1.25in OD.
What makes this valve different from a standard flapper valve?
ALL40203 has a spring-loaded flapper, while the standard non-spring-loaded flapper valve at the same 1.25in OD is ALL40201.
What is this check valve made of?
ALL40203 is made of aluminum with a natural finish.
What is this valve used for?
ALL40203 is a spring-loaded flapper-style overflow check valve designed for use with Allstar overflow catch cans.

