Description
Replace a rusted, seized, damaged, or missing left side heater control box with this stainless steel replacement heater control box for select Porsche 911 and Porsche 912 applications. This heater control box is used in the exhaust/heating system to regulate heated air flow from the heat exchanger into the heater ducting.
Made from stainless steel, this replacement heater control box offers improved corrosion resistance compared with standard mild steel components. It is a good choice during heater system repair, exhaust service, or restoration work where the original heater box flap assembly is rusted, stuck, leaking, or no longer operating correctly.
Fitment Note: This is the left side heater control box for select Porsche 911 and Porsche 912 models. Always compare the side, control style, mounting flange, duct connection, and overall shape with your original part before ordering.
| Part Type: | Heater control box |
| Side: | Left |
| Material: | Stainless steel |
| Application: | Porsche 911 1965-1986 and Porsche 912 1965-1970 |
| Engine Range: | Porsche 911 2.0L-3.2L and Porsche 912 1.6L applications |
| Replaces: | 901-211-007-22 / 90121100722 style heater control box |
| Sold As: | Each |
Inspect the related heater cables, return springs, heater hoses, clamps, heat exchangers, and surrounding exhaust/heater components while servicing this area. Professional installation is recommended.




