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Heater flaps
By OE Match
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Contains:
1 x Clamp for heater Left 90121105122
1 x Clamp for heater Right 90121105222
2 x M6 Hex. Head Bolts 90037803001
2 x Locking nuts N0120064
Fits:
Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1984-1986 3.2L
Porsche 911 1975-1977 3.0L Turbo (930)
Porsche 911 1978-1989 3.3L Turbo (930)
Click 'Zoom in' for large parts diagram.
Diagram ref no 2 , 3 & 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
HEATERCLAMP911
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 1975-89
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142471103
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 1965-86
Porsche 911 Turbo 3.0L / 3.3L 1975-86
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121105
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The OE MATCH Gasket for Heater Flap is a high-quality replacement sealing gasket designed for the heater flap assembly within the vehicle's heating and ventilation system. This gasket creates an effective seal between the heater flap and its housing, ensuring that warm air is directed correctly through the heating ducts and into the cabin.
Sold Each.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Diagram Ref No 7
Manufactured to OE specifications, the gasket helps prevent unwanted air leakage, improves heater efficiency, and contributes to proper climate control performance. Made from durable materials resistant to heat, age, and environmental exposure, it is an essential component during heater flap refurbishment or restoration work, particularly on classic Porsche models.
What This Product Does:
- Provides a seal between the heater flap and housing assembly
- Prevents unwanted air leakage within the heating system
- Ensures efficient airflow through the heater ducts
- Helps maintain consistent cabin heating performance
- Supports proper operation of the vehicle's ventilation system
- Reduces heat loss within the heater control system
Symptoms Of Wear Or Failure:
- Reduced cabin heating performance
- Air leaks from the heater flap assembly
- Difficulty maintaining cabin temperature
- Poor airflow direction through heater vents
- Increased drafts entering the cabin
- Rattling or vibration from loose sealing materials
- Visible deterioration, cracking, or missing gasket material
- Reduced efficiency of the heating and ventilation system
Why Replacement Matters:
- Restores an effective air-tight seal within the heater system
- Improves heating efficiency and airflow control
- Reduces unwanted air leaks and heat loss
- Enhances overall cabin comfort
- Supports proper operation of the heater flap mechanism
- Helps maintain original HVAC system performance
- Prevents drafts and inconsistent heating
- Provides a professional finish during restoration or maintenance work
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91121129700
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
SET OF 2
Fits:
Porsche 911 Carrera, 3.2, 8/1983 - 7/1986
Porsche Carrera Sport, 3.2, 8/1983 - 7/1986
Porsche 911S (mech. inj.), 2.4, 8/1971 - 7/1973
Porsche 911SC/911 Carrera, 2.7-3.0, 8/1975 - 7/1983
Porsche 911SC/Turbo (930T), 3.3, 8/1978 - 7/1986
Porsche 911T/E/S (not mech. inj.), 2.0-2.4, 1/1963 - 7/1973
Porsche 911/911S/911 Carrera, 2.7, 8/1973 - 7/1975
Porsche 912 Export Model USA
Porsche 912 Model Europe
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121100100B
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
SET OF 2
Upgrade the durability and reliability of your classic Porsche's heating system with these OE Match Heater Flap Boxes in Stainless Steel, manufactured as a direct replacement. Designed for models not equipped with the G50 gearbox, these heater flap boxes retain the original fit and function while offering the added corrosion resistance of stainless steel construction.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Heater flap boxes regulate the flow of warm air from the heat exchangers into the cabin, providing effective heating and windscreen demisting. Original mild steel units are prone to corrosion from moisture, road debris, and repeated heat cycles, which can cause the flap mechanism to seize or the housing to deteriorate. These stainless steel OE Match replacements provide a long-lasting solution, making them ideal for both regular maintenance and high-quality restoration projects.
What This Product Does:
- Control the flow of heated air from the heat exchangers.
- Direct warm air into the cabin when heating is selected.
- Divert airflow when cabin heat is not required.
- Support effective windscreen demisting and defrosting.
- Restore smooth operation of the heating control system.
- Provide improved corrosion resistance with stainless steel construction.
- Replace worn, corroded, or seized original heater flap boxes.
Symptoms Of Wear Or Failure:
- Poor or inconsistent cabin heating.
- Reduced airflow through the heating system.
- Heater remaining on or off regardless of control position.
- Seized or stiff heater flap mechanism.
- Corrosion or rust on the flap box housing.
- Air leaks around the heater flap assembly.
- Rattling or vibration from underneath the vehicle.
- Difficulty operating the heater controls.
- Visible holes or deterioration caused by corrosion.
- Damaged or missing heater flap boxes.
Why Replacement Matters:
- Faulty heater flap boxes reduce the efficiency of your Porsche's heating and ventilation system, affecting cabin comfort and limiting the ability to demist or defrost the windscreen. Corroded housings and seized flaps can also allow unwanted air leaks and prevent accurate temperature control.
- Replacing worn flap boxes restores proper airflow management and dependable heater operation while the stainless steel construction offers significantly greater resistance to corrosion than the original mild steel units. This helps extend service life, reduces future maintenance, and preserves the reliable performance and factory-style operation of the heating system, making these OE Match flap boxes an excellent upgrade for classic Porsche ownership and restoration.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121100100
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Stainless Steel. Left & Right SET OF 2
G50 Cars Only
The OE Match Heater Flap Box, Long Version is a high-quality replacement, designed to restore the proper operation of the heating system on compatible classic Porsche models. Manufactured to OE-style specifications, this long-version heater flap box controls the flow of heated air from the heat exchangers into the vehicle's cabin, providing reliable heating and windscreen demisting.
Fits:
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Please note the flaps don't come with holes to accommodate caloric sensor. You may need to drill the holes for the rivets.
Located within the vehicle's heating system, the heater flap box uses an internal flap mechanism to direct or divert warm air as required. Over time, exposure to moisture, road debris, heat, and corrosion can cause the housing or flap mechanism to deteriorate, affecting heating performance and air control. This OE Match replacement restores the original functionality and factory appearance, making it ideal for both routine repairs and restoration projects.
What This Product Does:
- Controls the flow of heated air from the heat exchangers.
- Directs warm air into the cabin when heating is selected.
- Diverts airflow when cabin heat is not required.
- Supports efficient windscreen demisting and defrosting.
- Helps maintain comfortable cabin temperatures.
- Restores correct operation of the Porsche heating system.
- Replaces a corroded, seized, or damaged original heater flap box.
Symptoms Of Wear Or Failure:
- Poor or inconsistent cabin heating.
- Reduced airflow from the heating system.
- Heat remaining on when switched off.
- Little or no warm air reaching the cabin.
- Heater flap sticking or failing to operate.
- Corrosion or rust on the heater flap box.
- Seized or stiff flap mechanism.
- Air leaks around the heater control assembly.
- Excessive rattling or vibration from the flap box.
- Visible deterioration or damage to the housing.
Why Replacement Matters:
- A faulty heater flap box can significantly reduce the effectiveness of your Porsche's heating and ventilation system, making the vehicle less comfortable to drive in colder weather and reducing the ability to demist or defrost the windscreen. A seized or damaged flap may also prevent accurate control of cabin temperature, leaving the heater permanently on or off.
- Replacing a worn heater flap box restores proper airflow management, improves heating efficiency, and helps maintain clear visibility during cold or damp conditions. It also prevents unwanted air leaks within the heating system and contributes to the reliable operation of the entire heating assembly. An OE Match replacement ensures the correct fit, dependable performance, and authentic appearance expected when maintaining or restoring a classic Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91121101000
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Stainless steel (Black finish). Left & Right SET OF 2
G50 cars only
Fits:
Porsche 911 1987-89 3.2L
Porsche 930 TURBO 1987-89 3.3L
Please note the flaps don't come with holes to accommodate caloric sensor. You may need to drill the holes for the rivets.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91121101000B
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911/912 1965-89
Porsche 930 (911) Turbo 1975-89
Replaces number 1 on diagram attached.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91121129700
The product you are viewing cross references to these numbers
OEMatch Heater flaps — Fit, Function, Confidence
Heater flaps control the direction and mix of warm and cool air in a Porsche’s HVAC ducts to support cabin heating, demisting and balanced ventilation. Many owners search for genuine or OEM heater flaps; these are direct-fit alternatives designed to match the original form, fit and function.
Available Types
- Manual cable-operated flap assemblies
- Electronic actuator assemblies with lever linkage
- Replacement flap panels and seals for duct repairs
Understanding OEMatch Heater flaps
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original heater flaps.
OE (Original Equipment) refers to parts matching original specifications for the heater flaps and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM heater flaps engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Heater flaps sit inside the ventilation housings and open or close passages to route air to the windscreen, footwell or dashboard vents. They work with cables or small electric servos and must seal correctly to avoid leaks and loss of heat. OEMatch maintains a broad catalogue of Porsche-related items to support repair and restoration needs and continues to develop additional parts for ongoing coverage.
Benefits Include
- Restores correct air distribution for effective cabin heating and demisting
- Reduces unwanted drafts and improves temperature consistency
- Replaces degraded seals and pivots to prevent duct leaks and noise
Why Heater flaps Wear and Fail
- Corrosion or seized linkages within metal housings
- Worn or broken hinges and pivot points from repeated movement
- Perished rubber seals or cracked plastic flaps from heat and age
The Importance of Replacing with OEMatch Heater flaps
Fitting sound heater flaps restores the HVAC system’s ability to route warm air where needed, ensuring reliable demisting and a comfortable cabin environment. Timely replacement avoids prolonged heater inefficiency, reduces condensation on glass and prevents further damage to actuators or ducts caused by leaking or jammed flaps.
Advantages
- Parts selected for Porsche model applications and common configurations
- Durable materials to withstand heat cycles and repeated operation
- Options to suit restoration projects and routine maintenance
Support & Advice
Fitting can appear straightforward but may require specific procedures such as linkage adjustment or actuator calibration. If you lack the correct tools or experience, seek professional installation and check fixing points and seals during reassembly.
