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Original Porsche Part Genuine Porsche part 90157206330

Code: 90157206330

Genuine Porsche part

Original Porsche Part

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

Vent Line Muffler for Auxiliary Heating. Porsche 911 65-76

90157206130/1

Product Information

Vent Line Muffler (Silencer) for Auxiliary Heating

Maintain the correct operation and refinement of your classic Porsche heating system with this OE Match Vent Line Muffler (Silencer) for the auxiliary heating system. Designed to replace the original component fitted to early air-cooled Porsche 911 models, this precision-manufactured part helps reduce airflow noise within the heater ventilation circuit while ensuring efficient operation of the auxiliary heating 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

Diagram ref no 40

Manufactured to OE specifications, this vent line muffler provides accurate fitment and dependable performance, making it an ideal choice during restoration, heater system refurbishment or preventative maintenance. As many original components have now become brittle, corroded or damaged after decades of service, replacing this often-overlooked part helps restore the smooth and quiet operation of the heating and ventilation system.

Whether you're carrying out a concours restoration or simply refreshing your Porsche's heating system, this OE Match component delivers the quality and fit expected for classic air-cooled models.

What Does the Auxiliary Heating Vent Line Muffler Do?

The vent line muffler forms part of the auxiliary heating and ventilation system.

Its purpose is to:

Reduce airflow and induction noise within the heating system.
Smooth airflow through the vent line.
Help maintain efficient heater operation.
Reduce unwanted resonance from the ventilation circuit.
Contribute to a quieter and more refined cabin environment.
Support the correct functioning of the auxiliary heating system.

Although compact, this component plays an important role in maintaining the original characteristics of the Porsche heating system.

Why Replace the Vent Line Muffler?

Years of exposure to heat, moisture, vibration and engine bay contaminants can cause the original vent line muffler to deteriorate.

Common reasons for replacement include:

Corrosion.
Internal deterioration.
Physical damage.
Blockages restricting airflow.
Age-related wear.
Heater system refurbishment.
Restoration projects.
Missing original components.

Replacing worn heating components helps restore correct airflow while maintaining the efficiency and refinement of the ventilation system.

Symptoms of a Worn or Damaged Vent Line Muffler

Signs that the component may require replacement include:

Increased airflow or induction noise from the heating system.
Reduced heater efficiency.
Restricted airflow.
Rattling or vibration within the vent line.
Visible corrosion or damage.
Missing heater system components.
Poor overall heating system performance.

Replacing the vent line muffler helps restore proper airflow characteristics and contributes to quieter heater operation.

Benefits

Restores quieter heater operation.
Helps maintain correct airflow.
Supports efficient auxiliary heating performance.
Replaces worn or corroded original components.
Improves overall refinement.
Easy direct-fit installation.
Long-lasting durability.

Why Choose OE Match Heating Components?

OE Match heating and ventilation components are manufactured to provide factory-quality fitment, dependable performance and long service life for classic Porsche models. Designed using high-quality materials and precision manufacturing processes, this vent line muffler restores the original operation of the auxiliary heating system while preserving the authentic character of your air-cooled Porsche. It is an excellent choice for restoration specialists and enthusiasts looking to maintain both comfort and originality.

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

90157206130

90157206130

The product you are viewing cross references to these numbers

3 3 3

Heater Tube Repair Set, Rear Chassis Side Member. Porsche 911 1965-73

90157202

Product Information

Heater Tube Repair Set, Rear Chassis Side Member.
This Heater Tube is a direct replacement for Porsche early air-cooled 911/912 models. Designed to sit inside the longitudinal/frame member, this 2-piece tube assembly routes warm air from the engine’s heat exchangers through the chassis and into the interior heater system.

Fits:

Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Diagram Ref No 14 And 16

What This Product Does:

They route warm air from the engine’s heater outlets through the car’s inner rocker / longitudinal frame members toward the front cabin heater system.
Inside the sill/longitudinal structure, they form part of the air path that carries warmed air (generated by the heat exchangers on the engine) forward into the cabin ventilation ducts under the dash.
Once the warm air reaches the front heater box area, it continues through other hoses and flaps to the vents, footwells and windscreen demisters.

Symptoms Of Wear Or Failure:

Even with the heater turned on, you’ll get little to no warm air into the cabin because the tube is rusted through, leaking, or blocked.
One side of the car may blow warmer than the other if only one tube is damaged (left or right).
If the tube is crushed, collapsed, or internally corroded, airflow can be restricted, causing weak blower/heater output.
Failed tubes can contribute to moisture buildup inside the longitudinal, which can cause musty smells and accelerate corrosion in the surrounding structure.
Since these tubes help deliver warm air forward, failure often shows up as weak windscreen demist performance, especially in cold or wet weather.

Why Replacement Matters:

Replacing a failed heater tube ensures that the cabin gets heated air as originally intended, improving driver comfort and safety in cooler weather.
Rust and deterioration inside the frame member can worsen over time. A compromised tube may allow moisture and corrosion to spread, damaging surrounding components.
For classic car restorations, keeping systems like the heating ductwork correct and complete helps preserve authenticity and value — especially important with vintage Porsches.

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

90157202

90157221121

90157202324

90157202424

The product you are viewing cross references to these numbers

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Original Porsche Part Genuine Porsche part 90157206330