MOPAR 1970-1976 AC Heater Core

HC mopar 3420577

$499.00

We are hunting this pattern but after seeing what eBay sellers are asking people to pay, we feel compelled to make a brand new better heater core for the Mopar: 3420577, from your pattern. Together, let's stop the madness.

Chrysler	Dodge	Plymouth
1974-1975	1970 Charger w/AC	1970 Satellite w/AC
	1970 Coronet w/AC	1974-75 Fury All models w/o upper vent
	1974-75 Monaco w/o upper vent	1974-76 Fury w/AC, w/upper vent
	1974-75 Polara w/o upper vent
	1974-76 Monaco w/AC, w/upper vent
	1974-76 Polara w/AC, w/upper vent
	1977 Royal Monaco w/upper vent, w/AC

We do not keep this heater core in stock & will need to fabricate it.

Our build queue varies. Present Lead times.

Made in the USA

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.