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Breather line Genuine Porsche part 992121638

Breather line 992121638
Code: 992121638
Genuine Porsche part
Breather line
The product code 992121638 was also found on these diagrams
105-400 - ventilation tube
Engine 992 (911) MK1 2019-2024
Coolant cooling system / Rear end 992.1 Carrera 2019 - 2024
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
Coolant Hose, Short Feed. Porsche 992.1 / 992.2 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>> - 99212161, 992121611A, 992121612A
3
Coolant Hose, Short Feed. Porsche 992.1 / 992.2 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>>
Special Order item
99212161
Product Information
Product Information
Coolant Hose, Short Feed.

Fits:
Porsche 992.1 Carrera MKI 2019>>2024
Porsche 992.2 Carrera MKII 2024>>
Porsche 992.1 Turbo / Turbo S MKI 2020>>
Porsche 992.1 GT3 / RS / ST MKI 2021>>

Diagram Ref No 11

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Related, superseded, cross reference or alternative numbers for comparison.

99212161
99212161
992121611A
992121612A

The product you are viewing cross references to these numbers
Coolant Hose, Long Feed. Porsche 992.1 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>> - 99212162, 992121623B, 992121624B
3
Coolant Hose, Long Feed. Porsche 992.1 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>>
Special Order item
99212162
Product Information
Product Information
Coolant Hose, Long Feed.

Fits:
Porsche 992.1 Carrera MKI 2019>>2024
Porsche 992.1 Turbo / Turbo S MKI 2020>>
Porsche 992.1 GT3 / RS / ST MKI 2021>>

Diagram Ref No 10

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Related, superseded, cross reference or alternative numbers for comparison.

99212162
99212162
992121623B
992121624B

The product you are viewing cross references to these numbers
Coolant Hose for Centre Radiator. Porsche 992.1 / 992.2 / 992 turbo - 992121629A, 992121630A
4
Coolant Hose for Centre Radiator. Porsche 992.1 / 992.2 / 992 turbo
Special Order item
9921216
Product Information
Product Information

Centre Radiator Coolant Hoses

These coolant hoses are designed for the centre radiator on the Porsche 992 and 992 turbo models. They form part of the high-performance cooling system used in Porsche’s engines, ensuring coolant flows efficiently between the engine and the centre radiator.

Fits:

  • Porsche 992.1 Carrera 2 3.0L 2019-24
  • Porsche 992.1 Carrera 4 3.0L 2019-24
  • Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Targa 4 3.0L 2020-24
  • Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
  • Porsche 992.1 Turbo 3.8L 2020-24
  • Porsche 992.1 Turbo S 3.8L 2020-24
  • Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
  • Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
  • Porsche 992.2 Carrera 2 3.0L 2024>>
  • Porsche 992.2 Carrera 2 GTS 3.6L 2024>>
  • Porsche 992.2 Carrera 4 GTS 3.6L 2024>>
  • Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
  • Porsche 992.2 Carrera 2 GTS 3.6L Cabriolet 2024>>
  • Porsche 992.2 Carrera 4 GTS 3.6L Cabriolet 2024>>
  • Porsche 992.2 Targa 4 GTS 3.6L 2024>>
  • Porsche 992.2 Turbo 3.6L 2024>>

Diagram Ref No 2 and 3 

High-revving 992 models generate substantial heat, particularly during spirited driving and track use. Proper coolant circulation through the centre radiator helps maintain stable engine temperatures and supports consistent performance under demanding conditions.

What These Coolant Hoses Do

The Porsche 992 cooling system uses multiple radiators mounted at the front of the vehicle to manage engine temperatures. The centre radiator increases the system’s cooling capacity and helps remove excess heat from the coolant.

The hoses perform several important functions:

• Carry coolant to and from the centre radiator
• Maintain proper coolant circulation through the cooling system
• Help regulate engine temperature during high performance driving
• Support efficient heat transfer through the radiator core

Without properly functioning hoses, coolant flow may be restricted, reducing the effectiveness of the cooling system.

Why Coolant Hoses Fail

Cooling hoses operate under extreme conditions and are exposed to heat, pressure and vibration throughout their service life.

Common causes of failure include:

Heat ageing
 Continuous temperature cycles can cause rubber hoses to harden, crack or lose flexibility.

Pressure fatigue
 Cooling systems operate under pressure, which can weaken hoses over time.

Chemical degradation
 Coolant additives and contaminants can gradually break down rubber compounds.

Mechanical wear
 Engine movement and vibration may cause stress or abrasion on hose connections.

Symptoms of Failing Coolant Hoses

• Coolant leaks near the front of the vehicle
• Low coolant level warning messages
• Sweet coolant smell around the front bumper area
• Visible cracking or swelling of the hose
• Engine temperature fluctuations during driving

Replacing worn hoses helps maintain proper coolant flow and prevents sudden coolant loss.

Why You May Need to Replace These Hoses

Maintain Cooling System Efficiency
 Healthy hoses ensure coolant can circulate freely through the centre radiator and engine.

Prevent Coolant Leaks
 Replacing ageing hoses helps maintain the cooling system’s pressure and prevents leaks.

Protect the High-Performance Engine
 These engines operate at high temperatures and require a fully functional cooling system.

Avoid Costly Engine Damage
 Loss of coolant can lead to overheating and significant mechanical damage if not addressed quickly.



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

9921216
992121629A
992121630A

The product you are viewing cross references to these numbers
Coolant Hose, Short Feed. Porsche 992.1 / 992.2 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>> - 99212161, 992121611A, 992121612A
2
Coolant Hose, Short Feed. Porsche 992.1 / 992.2 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>>
99212161
Product Information
Product Information
Coolant Hose, Short Feed.
The OE Match Coolant Hose, Short Feed is a high-quality replacement cooling system component designed to transport coolant between critical engine cooling system components. Manufactured to OE specifications for fit, durability and performance, this short feed hose ensures efficient coolant circulation and helps maintain stable engine operating temperatures.  

Fits:
  • Porsche 992.1 Carrera 2 3.0L 2019-24
  • Porsche 992.1 Carrera 4 3.0L 2019-24
  • Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Targa 4 3.0L 2020-24
  • Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
  • Porsche 992.1 Turbo 3.8L 2020-24
  • Porsche 992.1 Turbo S 3.8L 2020-24
  • Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
  • Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
  • Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
  • Porsche 992.1 GT3 RS 4.0L 2022-24
  • Porsche 992.2 Carrera 2 3.0L 2024>>
  • Porsche 992.2 Carrera 2 GTS 3.6L 2024>>
  • Porsche 992.2 Carrera 4 GTS 3.6L 2024>>
  • Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
  • Porsche 992.2 Carrera 2 GTS 3.6L Cabriolet 2024>>
  • Porsche 992.2 Carrera 4 GTS 3.6L Cabriolet 2024>>
  • Porsche 992.2 Targa 4 GTS 3.6L 2024>>  

Diagram Ref No 11

Constructed from premium heat-resistant and coolant-resistant materials, the hose is engineered to withstand continuous exposure to high temperatures, pressure fluctuations and the demanding conditions found within modern engine bays. Its precise design ensures a secure fit and reliable sealing performance, helping to maintain the integrity of the cooling system.

What This Product Does:

  • Transfers coolant between cooling system components.
  • Maintains efficient coolant circulation throughout the engine.
  • Supports stable engine operating temperatures.
  • Helps regulate cooling system pressure.
  • Provides a secure and leak-resistant coolant pathway.
  • Assists in preventing engine overheating.
  • Contributes to overall cooling system efficiency and reliability.

Symptoms Of Wear Or Failure:
  • Visible coolant leaks around the hose or connections.
  • Coolant drips beneath the vehicle.
  • Low coolant level warnings.
  • Engine overheating or fluctuating temperature readings.
  • Sweet coolant smell from the engine bay.
  • Cracks, splits or bulges in the hose material.
  • Soft, swollen or brittle rubber construction.
  • Coolant residue around hose fittings.
  • Loss of cooling system pressure.

Why Replacement Matters:
  • Coolant hoses operate in demanding conditions and are constantly exposed to heat cycles, coolant pressure, vibration and chemical exposure. Over time, the hose material can harden, crack, swell or weaken, increasing the risk of leaks and cooling system failure.
  • A damaged coolant hose can lead to coolant loss, reduced cooling efficiency and engine overheating. If coolant circulation is compromised, critical engine components may be exposed to excessive temperatures, potentially resulting in costly engine repairs. Even small leaks can worsen over time and negatively affect vehicle reliability.
  • Replacing a worn or damaged coolant hose restores proper coolant circulation, maintains cooling system pressure and helps protect the engine from overheating. An OE Match replacement provides factory-style fitment, dependable durability and long service life, ensuring reliable performance from your Porsche cooling system.



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

99212161
99212161
992121611A
992121612A

The product you are viewing cross references to these numbers
Coolant Hose, Long Feed. Porsche 992.1 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>> - 99212162, 992121623B, 992121624B
2
Coolant Hose, Long Feed. Porsche 992.1 Carrera / Turbo / Turbo S / GT3 / RS / ST 2019>>
99212162
Product Information
Product Information
Coolant Hose, Long Feed.
The OE Match Coolant Hose, Long Feed is a high-quality replacement cooling system component designed to transport coolant between key engine and radiator system components. Manufactured to OE specifications for fit, durability and performance, this long feed hose ensures efficient coolant circulation throughout the vehicle's cooling system, helping maintain stable engine operating temperatures under all driving conditions.  

Fits:
  • Porsche 992.1 Carrera 2 3.0L 2019-24
  • Porsche 992.1 Carrera 4 3.0L 2019-24
  • Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
  • Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
  • Porsche 992.1 Targa 4 3.0L 2020-24
  • Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
  • Porsche 992.1 Turbo 3.8L 2020-24
  • Porsche 992.1 Turbo S 3.8L 2020-24
  • Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
  • Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
  • Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
  • Porsche 992.1 GT3 RS 4.0L 2022-24  

Diagram Ref No 10

Constructed from premium heat-resistant and coolant-resistant materials, the hose is engineered to withstand continuous exposure to high temperatures, pressure fluctuations, coolant chemicals and engine bay environments. Its precise design provides secure connections and reliable sealing, helping preserve cooling system efficiency and reliability.  

What This Product Does:
  • Transfers coolant between critical cooling system components.
  • Maintains efficient coolant circulation throughout the engine.
  • Helps regulate engine operating temperatures.
  • Supports cooling system pressure management.
  • Provides a secure and leak-resistant coolant pathway.
  • Assists in preventing engine overheating.
  • Supports overall cooling system performance and reliability.
  • Contributes to long-term engine protection.

Symptoms Of Wear Or Failure:
  • Visible coolant leaks around the hose or connection points.
  • Coolant drips beneath the vehicle.
  • Low coolant level warnings.
  • Engine overheating or fluctuating temperature readings.
  • Sweet coolant smell from the engine bay.
  • Cracks, splits or bulges in the hose material.
  • Soft, swollen or brittle hose construction.
  • Coolant residue around hose fittings.
  • Loss of cooling system pressure.

Why Replacement Matters:

  • Coolant hoses operate in demanding conditions and are continuously exposed to heat cycles, coolant pressure, vibration and chemical exposure. Over time, the hose material can harden, crack, swell or weaken, increasing the risk of leaks and cooling system failure.
  • A damaged coolant hose can result in coolant loss, reduced cooling efficiency and engine overheating. If coolant circulation becomes compromised, critical engine components may be exposed to excessive temperatures, potentially leading to costly engine repairs. Even minor leaks can worsen over time and reduce overall vehicle reliability.
  • Replacing a worn or damaged coolant hose restores proper coolant circulation, maintains cooling system pressure and helps protect the engine from overheating-related damage. An OE Match replacement provides factory-style fitment, dependable durability and long service life, ensuring reliable operation of your Porsche cooling system.



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

99212162
99212162
992121623B
992121624B

The product you are viewing cross references to these numbers