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How to Connect Heater Core to a Firewall Bulkhead

How to Connect Heater Core to a Firewall Bulkhead

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 The following are components needed to plump a heater core to the back of a Aeroflow or other firewall bulk heads. We convert the 3/4" heater core tube to 5/8" Barb to enable connection to bulkheads with 5/8" rear barb attachment.

Note:  For Heater Core tubes with a Barb use Barb Adapters

To convert a 3/4" Heater core tube WithBarb.  Use a  3/4" to -10AN Barb Adapter.  To the Barb Adapter connect a  Female -10AN to 5/8" Hose Barb Fitting.   To the Hose Barb Fitting connect  5/8" Push Lock Hose,  clamp required. Connect hose to back of the 5/8" Barb to #10 A/C Firewall Bulkhead. clamp required.

To convert a 5/8" Heater core tube WithBarb connect  5/8" Push Lock Hose,  clamp required. Connect the hose to the back of the 5/8" to #10 A/C Firewall Bulkhead.

NOTE: For Heater core tubes with No Barb use Tube Adapters  

To convert a 3/4" Heater core tube with NO barb. Use a  3/4" to 12AN Tube Adapter.  To the Tube Adapter connect a  Female -12AN to 5/8" Hose Barb Fitting.  To the Hose Barb Fitting connect   5/8" Push Lock Hose   clamp required. Connect to the 5/8" Barbs on the back of the   5/8" Barb to 10 A/C Firewall Bulkhead,   clamp required. 

To convert a 5/8" Heater core tube with NO Barb. Use a 5/8" to -10AN Tube Adapter. To the Tube Adapter connect a Female -10AN to 5/8" Hose Barb Fitting. To the  hose Barb Fitting connect  5/8" Push Lock Hose  clamp required. Connect to the 5/8" Barbs on the back of the  5/8" Barb to 10 A/C Firewall Bulk Head. Clamp required.

  To convert the #10 A/C ports on the engine side of the firewall bulkhead to -10AN use 2, A/C O-ring to AN Adapters. 2 required, 1 per package, order 2

Clamps and Clamp Pliers available on this page.