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- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Heater Hose to Heater Air Flap - 320mm long
Fits left or right hnd side
Restore the efficiency of your Porsche's heating and
ventilation system with this OE Match Heater Hose,
designed specifically to connect the heater ducting to the heater air flap
on the Porsche 964 Carrera 2 and Carrera 4. Manufactured to original
equipment specifications, this high-quality replacement hose ensures warm air
is directed efficiently through the heating system, maintaining reliable cabin
comfort and proper airflow.
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Diagram ref no 5
Whether you're restoring a classic 964, replacing deteriorated heater ducting or refurbishing the complete heating system, this OE Match heater hose provides factory-quality fitment and dependable long-term durability.
What Does the Heater Hose Do?
The heater hose connects the engine's heating ductwork to the heater air flap assembly, allowing heated air generated by the engine cooling fan and heat exchangers to be directed into the cabin when required.
Its primary functions include:
- Carrying heated air to the heater air flap.
- Maintaining efficient airflow through the heating system.
- Supporting rapid cabin heating.
- Helping deliver effective windscreen demisting and defrosting.
- Preventing warm air from escaping before reaching the heater controls.
- Maintaining the correct operation of the Porsche heating and ventilation system.
A correctly sealed heater hose helps maximise heating efficiency and passenger comfort.
Why Do Heater Hoses Fail?
Heater hoses operate in a high-temperature environment and
gradually deteriorate through age and continual heat exposure. Common causes of
failure include:
- Heat cycling causing the material to harden.
- Age-related cracking and splitting.
- Perishing caused by engine bay temperatures.
- Oil contamination degrading the hose material.
- Abrasion against surrounding components.
- General deterioration after years of service.
As the hose deteriorates it can develop splits, become brittle or collapse, allowing valuable heated air to escape before reaching the cabin.
When Should the Heater Hose Be Replaced?
The heater hose should be inspected whenever the heating
system or engine is serviced. Replacement is recommended if you notice:
- Cracked or brittle hose material.
- Torn or split ducting.
- Loose hose connections.
- Reduced cabin heating performance.
- Poor windscreen demisting.
- Visible heat damage or distortion.
Many Porsche specialists recommend replacing ageing heater hoses during engine-out servicing or whenever the heating ductwork is being refurbished.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96457278500
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)
- Porsche 914 (1970-1976)
The OE MATCH Heater Flap Hose is a high-quality silicone heating system hose designed to connect the heat control box (heater flap assembly) to the heat exchanger. Measuring Ø60 x 330 mm, this flexible hose forms a vital part of the vehicle’s cabin heating system, carrying heated air from the heat exchangers to the heater control components and ultimately into the passenger compartment.
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)
- Porsche 914 (1970-1976)
Manufactured from durable, heat-resistant silicone, the hose is designed to withstand the high temperatures generated by the exhaust-heated air system while maintaining flexibility and structural integrity. It is an ideal replacement for ageing, cracked, or deteriorated original hoses commonly found on classic Porsche models.
What This Product Does:
- Transfers heated air from the heat exchanger to the heater control box
- Supports efficient cabin heating system operation
- Provides a sealed airflow path within the heating system
- Helps maintain consistent cabin temperatures
- Reduces heat loss within the heater ducting system
- Withstands high temperatures and engine bay conditions
Symptoms Of Wear Or Failure:
- Weak or reduced cabin heating output
- Loss of heated air before it reaches the cabin
- Cracked, split, or collapsed hose sections
- Air leaks around the heater duct connections
- Uneven or inconsistent cabin temperatures
- Visible deterioration from age, heat, or oil contamination
- Increased noise from escaping airflow
- Reduced overall efficiency of the heating system
Why Replacement Matters:
- Restores efficient heated air delivery to the cabin
- Prevents heat loss through damaged or leaking ducting
- Improves cabin comfort and temperature control
- Maintains proper operation of the heater flap system
- Reduces unwanted air leaks and noise
- Provides improved durability compared to ageing original hoses
- Supports restoration and maintenance of classic
- Porsche heating systems
- Ensures reliable long-term performance in high-temperature environments
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93021162201
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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 914 (1970-1976)
Fits:
Porsche 911 1968-73
Porsche 911 TURBO 3.0L / 3.3L 1975-89
Porsche 914-6 1970-76
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010632102
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 914 (1970-1976)
This OE Match engine to heat exchanger hose is a replacement left-side heater air hose for Porsche 911 and 914 models. Measuring 458 mm x 60 mm, it is designed to match the original-style fitment and function, helping restore correct airflow between the engine and heat exchanger system.
Fits:
Porsche 911/911S/ Carrera 3.0 / 911SC 1974 - 1983
Porsche 914-6 1970 - 1976
This product supersedes Porsche's old part numbers: 90121119500
Diagram ref no. 10
The engine to heat exchanger hose carries warm air through the heating system, connecting the engine-side heater ducting to the heat exchanger area. A correctly fitted hose helps maintain proper cabin heating, demisting performance, and air distribution through the classic Porsche heating system.
Functions
• Replaces the left-side engine to heat exchanger hose
• Connects the engine heater ducting to the heat exchanger system
• Supports warm air transfer through the heating circuit
• Helps maintain cabin heating and windscreen demisting performance
• Replaces split, crushed, brittle, missing, or heat-damaged original hoses
• Supports correct heater system operation and airflow
• OE Match replacement for classic Porsche heater system restoration.
Why Replace This Part?
Heater air hoses are exposed to heat, vibration, age, moisture, and engine bay conditions. Over time, the hose can split, crush, collapse, harden, fray, or become detached. A damaged hose can reduce heating performance, cause poor demisting, allow air leaks, or leave the heating system incomplete. Replacing the hose helps restore correct airflow and reliable heater operation.
When to Replace This Part
• The hose is split, crushed, brittle, torn, or missing
• Cabin heating output is weak or uneven
• Windscreen demisting performance is poor
• Air leaks are present around the heater hose connections
• The heat exchanger or heater ducting is being serviced
• Engine bay heater hoses are being replaced during restoration
• The vehicle is undergoing Porsche 911 or 914 heating system refurbishment.
Where it fits on the car
This hose fits on the left side of the engine to heat exchanger heating system on Porsche 911 and 914 models. It connects the engine-side heater ducting to the heat exchanger area according to the factory heater layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90121119501
The product you are viewing cross references to these numbers