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adapter Genuine Porsche part 91121127501

Code: 91121127501

Genuine Porsche part

adapter

The product code 91121127501 was also found on these diagrams

108-10 - reducing socket

blower engine 911 SC 1978-83

108-10 - reducing socket

Additional blower 911 1975 ONWARDS

Additional information:

• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

Before purchasing thoroughly check part to confirm compatibility.

Related products

3 3 3

Gasket for heater flap. Porsche 911 / 912 / 930 1965-89

91121129700/8

Product Information

Gasket For Heater Flap.

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

91121129700

The product you are viewing cross references to these numbers

Heating block off plate. Porsche 911/912/930 65-89

91121129700/2

Product Information

Heating Block Off Plates (Pair)

Complete your engine restoration or heater system modification with this Heating Block Off Plate Kit, supplied as a pair. These plates provide a secure seal for unused heater outlets, helping maintain the correct airflow through the engine cooling system.

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)

Replaces number 1 on diagram attached

On air-cooled Porsche engines, the engine cooling fan supplies air to both the engine cooling system and the cabin heating system via heat exchangers. When the heating system has been removed, modified or is no longer required, the unused heater outlets must be properly sealed. These block off plates prevent valuable cooling air from escaping, ensuring it is directed through the engine's cooling fins where it is needed most.

Manufactured to OE Match standards, these plates provide factory-style fitment and are ideal for heater delete conversions, competition vehicles, engine rebuilds and concours-quality restorations.

What Do Heating Block Off Plates Do?

Heating block off plates are designed to seal the heater duct outlets on the engine fan housing or associated heating components when the original heater system is no longer in use.

Their primary functions include:

Preventing cooling air from escaping unused heater outlets
Maintaining correct airflow across the engine cylinders and heads
Improving cooling efficiency
Preventing dirt, dust and debris entering unused heater duct openings
Providing a clean, factory-style appearance within the engine bay

Correctly sealing unused heater outlets is particularly important on air-cooled engines, where efficient airflow is critical to maintaining stable operating temperatures.

Why Do Heating Block Off Plates Need Replacing?

Original block off plates, or the components they replace, can become damaged, corroded or distorted after decades of exposure to engine heat, moisture and road debris.

In many cases, older vehicles that have undergone heater delete conversions may have improvised blanking plates made from unsuitable materials, or the outlets may simply have been left open altogether. This allows cooling air to escape, reducing the efficiency of the engine cooling system.

Replacement is also recommended if the original plates are:

Corroded or rusted
Bent or distorted
Poorly fitting
Missing altogether
Damaged during previous engine work

Installing correctly manufactured OE Match block off plates restores the engine bay to a professional standard while ensuring the cooling system operates as intended.

When Should They Be Replaced?

Heating block off plates should be installed or replaced whenever:

Performing a heater delete conversion
Removing or modifying the original heating system
Rebuilding the engine
Restoring the engine bay
Replacing damaged or corroded engine tinware
Missing or incorrect blanking plates are discovered

Replacing worn or incorrect plates helps maximise cooling efficiency while improving the appearance and reliability of the engine compartment.

Porsche 911, 912 & 930 Heating & Engine Cooling Components

The air-cooled Porsche engine relies on carefully managed airflow to maintain safe operating temperatures. Every component of the cooling system, including engine tinware, ducting and heater outlet covers, plays an important role in directing cooling air exactly where Porsche intended.

When the heating system has been removed or modified, fitting correctly engineered block off plates helps prevent cooling air losses and ensures maximum airflow reaches the cylinders and cylinder heads.

Whether restoring a road car, preparing a competition vehicle or completing a detailed engine rebuild, replacing missing or damaged heating block off plates is a simple but important step towards maintaining engine efficiency and achieving a factory-quality finish.

Benefits of Replacing the Heating Block Off Plates

Restores correct engine cooling airflow
Prevents cooling air escaping through unused heater outlets
Helps maintain stable engine operating temperatures
Protects unused heater duct openings from dirt and debris
Improves engine bay appearance
Provides a factory-style finish
Ideal for heater delete conversions and restoration projects

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91121129700

91121129700

91121129704

The product you are viewing cross references to these numbers

Heater Blower Hose. Porsche 911 SC 1975-79

91121127202/2

Product Information

Heater Blower Hose.
Maintain efficient cabin heating and ventilation with this OE Match Heater Blower Hose, manufactured as a direct replacement. Produced to OE-style specifications, this flexible heater blower hose is designed to transfer heated air from the blower system to the vehicle's heating and ventilation ducts, ensuring consistent airflow and effective cabin temperature control.

Fits:

Porsche 911 1975-1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1979 3.0L / SC

Diagram Ref No 9

Over time, the original hose can become brittle, split, crushed, or deteriorate due to continual exposure to heat, vibration, and age. A damaged heater blower hose can reduce airflow, decrease heating efficiency, and allow heated air to escape before it reaches the passenger compartment. Replacing a worn hose restores the efficiency of the heating system and helps maintain passenger comfort. This OE Match heater blower hose is ideal for routine maintenance, heating system repairs, and Porsche restoration projects.

What This Product Does:

Transfers heated air from the blower to the heating system.
Maintains efficient airflow through the ventilation ducts.
Supports effective cabin heating and demisting performance.
Helps minimise heat loss within the heating system.
Replaces split, crushed, or deteriorated original hoses.
Restores efficient operation of the heating and ventilation system.
Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

Reduced airflow from the heater vents.
Poor cabin heating performance.
Heated air escaping within the engine compartment.
Split, cracked, or crushed heater hose.
Excessive deterioration caused by heat or age.
Difficulty maintaining cabin temperature.
Heating system restoration requiring replacement ducting.

Why Replacement Matters:

The heater blower hose is an essential component of the Porsche heating and ventilation system, carrying warmed air from the blower assembly to the cabin. A damaged or deteriorated hose can reduce airflow, decrease heating efficiency, and allow valuable heated air to escape, resulting in poor cabin comfort and less effective windscreen demisting.
Replacing a worn heater blower hose restores proper airflow, improves heating performance, and helps ensure the heating and ventilation system operates as intended. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Heater Blower Hose provides the correct fit, dependable performance, and long-lasting durability, making it an excellent choice for Porsche maintenance, repairs, and restoration projects.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91121127202

91121127202

The product you are viewing cross references to these numbers

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adapter Genuine Porsche part 91121127501