Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass
Overflow tank with site glass

Overflow tank with site glass

15" black - site glass OT

$99.00

Black over brass, 2" diameter with flat ends.  First select the length and add to the cart and then select the preferred site glass for coolant level viewing.  Made in the USA

Here is how it works...should the system pressure exceed the cap’s rating, the spring will compress and fluid will flow through the upper tube to fill the chamber.  

In the event the recovery tank reaches capacity, the fluid will find the second tube and exit to the street.  A vacuum will draw the coolant back into the cooling system as the engine cools down.

Contact us directly for alternative sizes, finished or shapes.


We make to order. Please allow adequate time for us to build.

Build time estimates [Feb 2025]

Brass/Black Model Ts

Our longstanding foundry (supplier) closed and all production was shifted to a neighboring foundry.  Apparently many of the closed foundry's workers were ineligible for rehire by the new foundry due to more aggressive immigration enforcement and the union has no employees to provide.  As of 2-20-25, we should receive castings in March 2025 and can resume production then. 

In the interim, we have been working with our one-off foundry to have pattern boxes made and these are trickling in in smaller batches and we will produce what we can.

Model As 5-6 weeks

Heater cores ~6 weeks

Model A and 32 Ford Street rods 6 weeks

Common street rods ~12-15 weeks

Tricky customs & complicated restorations ~16 weeks months

We appreciate your patience as we continue to recruit and train new fabricators and manage the labor shortfall our country has been experiencing.