Model 21 Heater core

HC Mopar 21 pattern required

$329.00

Bishop and Babcock made the Tri-airstream no.21; part 680721 and supplied to Chrysler corp. and its dealers. We are trying to source a pattern for this one. Until we do, if you need a heater core for your Model 21, we'll need to have you send it in.

Made in the USA

Each heater core is made to order, please allow adequate time for us to fabricate.

Present Lead times.

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

Build time estimates [April 23, 2026]

Model Ts Brass 18 weeks

Model Ts Black 13 weeks

Model As 17 weeks

Heater cores ~11 weeks

1928-34 Ford Hot rods 2-3 weeks

Common street rods ~12-15 weeks

Tricky customs & complicated restorations ~20-25 weeks

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