Heater Box Kit with Blower Motor | 1966-77 Ford Bronco SKU: 519900

Early Bronco Heater Box Assembly | Complete | 1966-77 Ford Bronco

Restore your Early Bronco heating system with a complete new heater box assembly built around the factory 1966-77 Ford Bronco design. Choose from four kit configurations ranging from an OEM-style replacement heater assembly to a more complete deluxe system with upgraded hoses and additional heater components.

For factory-style performance, choose the Stock Base or Stock Deluxe Kit with the standard heater blower motor and squirrel fan. For improved airflow and stronger heating performance, step up to the HD Base or HD Deluxe Kit, which replaces the stock blower setup with our Heat Blaster high-output blower motor and oversized squirrel fan.

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• Fits 1966-77 Ford Bronco – Designed around the original Early Bronco heater system

• All-New Heater Box Assembly – Replace aging, damaged, leaking, or incomplete factory heater components

• Stock or High-Output Blower Options – Choose OEM-style airflow or upgrade to the Heat Blaster system

• New Heater Core Included – Fresh core for dependable coolant flow and heat transfer

• Defrost Components Included – Base kits include two defrost hoses, with Deluxe kits adding the Defrost Duct

• New Seals & Small Components – Includes heater box reseal kit, blower resistor, and heater cable clips

• Deluxe Kit Options – Add silicone heater hoses, stainless clamps, heater valve, water inlet elbow, and additional air inlet components

• Four Configurations Available – Select the level of restoration or heating performance that fits your Bronco

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Choose Your Heater Kit

Stock Base Kit

A complete OEM-style heater box replacement using a stock-style blower motor and squirrel fan.

Includes:

• Heater Box

• Stock Heater Blower Motor

• Stock Squirrel Fan

• Heater Core

• 2 Defrost Hoses

• Air Inlet Duct / Heater Bellow Seal

• Heater Blower Motor Resistor

• 2 Heater Cable Clips

• Heater Box Reseal Kit

This is the best choice for a factory-style restoration or a straightforward replacement of the original heater box assembly.

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Stock Deluxe Kit

Starts with everything in the Stock Base Kit and adds more of the components needed to refresh the complete heater and coolant connection system.

Adds:

• Defrost Duct

• Silicone Heater Hoses

• Stainless Heater Hose Clamps

• Heater Valve

• Water Inlet Elbow

• Heater Air Vent Inlet Duct Adapter

The Stock Deluxe Kit is ideal when you want to replace more of the aging heater system at the same time while maintaining factory-style blower performance.

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HD Base Kit with Heat Blaster

Includes the same core heater box components as the Stock Base Kit but upgrades the factory blower motor and fan to our Heat Blaster Heater Blower Motor & Fan.

Includes:

• Heater Box

• Heat Blaster Heater Blower Motor

• Oversized Heat Blaster Squirrel Fan

• Heater Core

• 2 Defrost Hoses

• Air Inlet Duct / Heater Bellow Seal

• Heater Blower Motor Resistor

• 2 Heater Cable Clips

• Heater Box Reseal Kit

The Heat Blaster setup significantly increases airflow through the heater system, helping move more warm air into the cabin and through the defrost system.

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HD Deluxe Kit with Heat Blaster

Our most complete option combines the Heat Blaster high-output blower system with the additional components included in the Deluxe package.

Includes everything in the HD Base Kit, plus:

• Defrost Duct

• Silicone Heater Hoses

• Stainless Heater Hose Clamps

• Heater Valve

• Water Inlet Elbow

• Heater Air Vent Inlet Duct Adapter

For Broncos that see cold-weather driving, this kit provides the most complete heater refresh along with the improved airflow of the Heat Blaster system.

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Stock Blower vs. Heat Blaster

The original Early Bronco heater system works well for a factory restoration, but airflow from the stock blower motor can be limited by modern standards.

Our Heat Blaster upgrade uses a higher-output blower motor paired with an oversized squirrel fan to move substantially more air through the heater box. More airflow helps improve cabin heating and windshield defrost performance, making it a valuable upgrade for Broncos driven regularly in colder weather.

Installation of the Heat Blaster requires minor modification to the heater box to accommodate the larger fan.

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Why Choose the Deluxe Kit?

A heater box replacement is often part of a larger cooling and heating system refresh. The Deluxe configurations add several components that are commonly worn, hardened, corroded, or missing after decades of service.

The included silicone heater hoses and stainless clamps provide a durable upgrade over traditional rubber hoses and worm-drive clamps, while the new heater valve, water inlet elbow, Defrost Duct, and air inlet duct adapter help complete the system rather than leaving old components connected to a brand-new heater box.

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Restore your Early Bronco heater system your way—choose factory-style performance or step up to Heat Blaster airflow, with Deluxe options for a more complete system rebuild.