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Porsche > Macan (95B) MK2 2019-2021 > 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21 > Engine Cooling > Coolant Hoses and Pipes >

Engine Block Hoses

Engine Block Hoses

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DISPLAYING 1 to 7 (of 7 products)
Breather Line. Porsche 95B.2 Macan 2.0L Petrol 2019-21 - 95B122909E
2
Breather Line. Porsche 95B.2 Macan 2.0L Petrol 2019-21
Special Order item
95B122909E
Product Information
Product Information
Breather Line.

The Breather Line is a genuine Porsche ventilation hose designed to regulate pressure and safely route vapours within the engine or cooling system circuit (application dependent). This component helps maintain proper airflow and system balance by allowing trapped air or gases to vent correctly.

Fits:

  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21


Diagram Ref No 1

What This Product Does:

  • Allowing trapped air or vapours to vent safely
  • Maintaining stable internal system pressure
  • Supporting efficient coolant or ventilation circulation
  • Preventing pressure build-up within connected components
  • Helping ensure consistent engine or cooling system performance

Symptoms Of Wear Or Failure:
  • Cracked, brittle, or split hose material
  • Coolant or vapour leaks (depending on application)
  • Engine bay smells
  • Low coolant warning light (if coolant-related)
  • Fluctuating engine temperature (if cooling system related)
  • Poor ventilation performance
  • Warning lights or fault codes in some cases

Why Replacement Matters:
  • Maintain proper pressure regulation
  • Prevent leaks and system imbalance
  • Support reliable engine or cooling system performance
  • Protect connected components from stress damage
  • Avoid costly repairs caused by pressure-related failures



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Related, superseded, cross reference or alternative numbers for comparison.

95B122909E
95B122909E

The product you are viewing cross references to these numbers
Breather Line. Porsche 95B.2 Macan 2.0L Petrol 2019-21 - 95B122909E
2
Breather Line. Porsche 95B.2 Macan 2.0L Petrol 2019-21
95B122909E/1
Product Information
Product Information
Breather Line.

The Breather Line is a OE MATCH ventilation hose designed to regulate pressure and safely route vapours within the engine or cooling system circuit (application dependent). This component helps maintain proper airflow and system balance by allowing trapped air or gases to vent correctly.

Fits:

  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21


Diagram Ref No 1

What This Product Does:

  • Allowing trapped air or vapours to vent safely
  • Maintaining stable internal system pressure
  • Supporting efficient coolant or ventilation circulation
  • Preventing pressure build-up within connected components
  • Helping ensure consistent engine or cooling system performance

Symptoms Of Wear Or Failure:
  • Cracked, brittle, or split hose material
  • Coolant or vapour leaks (depending on application)
  • Engine bay smells
  • Low coolant warning light (if coolant-related)
  • Fluctuating engine temperature (if cooling system related)
  • Poor ventilation performance
  • Warning lights or fault codes in some cases

Why Replacement Matters:
  • Maintain proper pressure regulation
  • Prevent leaks and system imbalance
  • Support reliable engine or cooling system performance
  • Protect connected components from stress damage
  • Avoid costly repairs caused by pressure-related failures



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

95B122909E
95B122909E

The product you are viewing cross references to these numbers
Coolant Hose. Porsche 95B.2 Macan / 971.1 / 971.2 / 976 Panamera / 9YA / 9YA.2 Cayenne 2017>> - 9A712105210
2
Coolant Hose. Porsche 95B.2 Macan / 971.1 / 971.2 / 976 Panamera / 9YA / 9YA.2 Cayenne 2017>>
Special Order item
9A712105210
Product Information
Product Information
Coolant Hose. 
Keep your engine operating at the right temperature with this genuine coolant hose — a direct OEM replacement engineered for reliability and long-lasting performance. Designed specifically for select Porsche 95B.2 Macan / 971.1 / 971.2 / 976 Panamera / 9YA / 9YA.2 Cayenne models, this hose plays a vital role in your vehicle’s cooling system by circulating coolant and supporting efficient heat transfer.

Fits:
  • Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
  • Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
  • Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
  • Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
  • Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
  • Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
  • Porsche 9YA.2 Cayenne V6 3.0L Petrol (353Hp) 2023>>
  • Porsche 9YA.2 Cayenne Coupe V6 3.0L (353Hp) 2023>>
  • Porsche 9YA.2 Cayenne E-Hybrid V6 3.0L (470Hp) 2023>>
  • Porsche 9YA.2 Cayenne E-Hybrid Coupe V6 3.0L (470Hp) 2023>>
  • Porsche 9YA.2 Cayenne S E-Hybrid V6 3.0L (519Hp) 2023>>
  • Porsche 9YA.2 Cayenne S E-Hybrid Coupe V6 3.0L (519Hp) 2023>>
  • Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
  • Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
  • Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
  • Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
  • Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
  • Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
  • Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
  • Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
  • Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
  • Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
  • Porsche 971.2 Panamera 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
  • Porsche 976 Panamera V6 2.9L 2023>>
  • Porsche 976 Panamera 4 V6 2.9L 2023>>
  • Porsche 976 Panamera 4 E-Hybrid V6 2.9L 2023>>
  • Porsche 976 Panamera 4S E-Hybrid V6 2.9L 2023>>
  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
  • Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
  • Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
  • Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21  

Diagram Ref No 5

What This Product Does:

  • Transfers coolant (antifreeze) between engine components
  • Regulates engine temperature by maintaining proper coolant flow
  • Prevents overheating by helping move heat away from the engine
  • Supports cabin heating by routing warm coolant to the heater core

Symptoms Of Wear Or Failure:
  • Coolant leaks or visible fluid under the vehicle
  • Engine overheating or rising temperature gauge
  • Low coolant warning light or frequent coolant top-offs
  • Sweet coolant smell from the engine bay
  • Steam coming from under the hood
  • Weak or no cabin heat
  • Cracks, swelling, or soft/brittle hose material
  • Coolant residue or dampness around hose connections

Why Replacement Matters:
Replacing a worn coolant hose is essential to maintaining proper engine cooling and preventing costly damage. A failing hose can lead to coolant leaks, overheating, and reduced heater performance. If left unaddressed, it may cause severe engine overheating, which can result in serious repairs such as head gasket failure or engine damage. Installing a new hose helps ensure reliable coolant circulation, stable engine temperature, and long-term vehicle performance.  



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

9A712105210
9A712105210

The product you are viewing cross references to these numbers
Coolant Hose. Porsche 95B.2 Macan / 971.1 / 971.2 / 976 Panamera / 9YA / 9YA.2 Cayenne 2017>> - 9A712105210
2
Coolant Hose. Porsche 95B.2 Macan / 971.1 / 971.2 / 976 Panamera / 9YA / 9YA.2 Cayenne 2017>>
9A712105210/1
Product Information
Product Information
Coolant Hose. 
Keep your engine operating at the right temperature with this OE MATCH coolant hose — engineered for reliability and long-lasting performance. Designed specifically for select Porsche 95B.2 Macan / 971.1 / 971.2 / 976 Panamera / 9YA / 9YA.2 Cayenne models, this hose plays a vital role in your vehicle’s cooling system by circulating coolant and supporting efficient heat transfer.

Fits:
  • Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
  • Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
  • Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
  • Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
  • Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
  • Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
  • Porsche 9YA.2 Cayenne V6 3.0L Petrol (353Hp) 2023>>
  • Porsche 9YA.2 Cayenne Coupe V6 3.0L (353Hp) 2023>>
  • Porsche 9YA.2 Cayenne E-Hybrid V6 3.0L (470Hp) 2023>>
  • Porsche 9YA.2 Cayenne E-Hybrid Coupe V6 3.0L (470Hp) 2023>>
  • Porsche 9YA.2 Cayenne S E-Hybrid V6 3.0L (519Hp) 2023>>
  • Porsche 9YA.2 Cayenne S E-Hybrid Coupe V6 3.0L (519Hp) 2023>>
  • Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
  • Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
  • Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
  • Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
  • Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
  • Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
  • Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
  • Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
  • Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
  • Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
  • Porsche 971.2 Panamera 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
  • Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
  • Porsche 976 Panamera V6 2.9L 2023>>
  • Porsche 976 Panamera 4 V6 2.9L 2023>>
  • Porsche 976 Panamera 4 E-Hybrid V6 2.9L 2023>>
  • Porsche 976 Panamera 4S E-Hybrid V6 2.9L 2023>>
  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
  • Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
  • Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
  • Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21  

Diagram Ref No 5

What This Product Does:

  • Transfers coolant (antifreeze) between engine components
  • Regulates engine temperature by maintaining proper coolant flow
  • Prevents overheating by helping move heat away from the engine
  • Supports cabin heating by routing warm coolant to the heater core

Symptoms Of Wear Or Failure:
  • Coolant leaks or visible fluid under the vehicle
  • Engine overheating or rising temperature gauge
  • Low coolant warning light or frequent coolant top-offs
  • Sweet coolant smell from the engine bay
  • Steam coming from under the hood
  • Weak or no cabin heat
  • Cracks, swelling, or soft/brittle hose material
  • Coolant residue or dampness around hose connections

Why Replacement Matters:
Replacing a worn coolant hose is essential to maintaining proper engine cooling and preventing costly damage. A failing hose can lead to coolant leaks, overheating, and reduced heater performance. If left unaddressed, it may cause severe engine overheating, which can result in serious repairs such as head gasket failure or engine damage. Installing a new hose helps ensure reliable coolant circulation, stable engine temperature, and long-term vehicle performance.  



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

9A712105210
9A712105210

The product you are viewing cross references to these numbers
Engine Coolant Vent Hose, Upper Centre. Porsche 95B.2 / 95B.3 Macan 2.0L Petrol 2019>> - PAC121081A, PAC121081
2
Engine Coolant Vent Hose, Upper Centre. Porsche 95B.2 / 95B.3 Macan 2.0L Petrol 2019>>
Special Order item
PAC121081A
Product Information
Product Information
Engine Coolant Vent Hose, Upper Centre. 

The Engine Coolant Vent Hose – Upper Centreis a genuine Porsche cooling system component designed to vent trapped air and vapour from the upper section of the engine’s coolant circuit. Positioned centrally in the upper cooling layout, this hose plays a key role in maintaining proper coolant circulation and system pressure balance.

Fits:

  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
  • Porsche 95B.3 Macan Petrol 2.0L (265Bhp) 2022>>

Diagram Ref No 15

What This Product Does:
  • Allowing trapped air to escape from the coolant circuit
  • Preventing airlocks that reduce cooling efficiency
  • Maintaining stable cooling system pressure
  • Supporting consistent coolant flow
  • Helping regulate engine operating temperature

Symptoms Of Wear Or Failure:
  • Coolant leaks near the upper engine area
  • Cracked, split, or hardened hose material
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Difficulty bleeding the cooling system
  • Fluctuating engine temperature readings
  • Coolant residue around hose fittings

Why Replacement Matters:
  • Maintain correct cooling system pressure
  • Prevent airlocks and circulation issues
  • Protect the engine from overheating damage
  • Restore reliable cooling system performance
  • Avoid costly repairs caused by cooling system failure



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

PAC121081A
PAC121081A
PAC121081

The product you are viewing cross references to these numbers
Engine Coolant Vent Hose, Upper Centre. Porsche 95B.2 / 95B.3 Macan 2.0L Petrol 2019>> - PAC121081A, PAC121081
2
Engine Coolant Vent Hose, Upper Centre. Porsche 95B.2 / 95B.3 Macan 2.0L Petrol 2019>>
PAC121081A/1
Product Information
Product Information
Engine Coolant Vent Hose, Upper Centre. 

The Engine Coolant Vent Hose – Upper Centre is a OE MATCH cooling system component designed to vent trapped air and vapour from the upper section of the engine’s coolant circuit. Positioned centrally in the upper cooling layout, this hose plays a key role in maintaining proper coolant circulation and system pressure balance.

Fits:

  • Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
  • Porsche 95B.3 Macan Petrol 2.0L (265Bhp) 2022>>

Diagram Ref No 15

What This Product Does:
  • Allowing trapped air to escape from the coolant circuit
  • Preventing airlocks that reduce cooling efficiency
  • Maintaining stable cooling system pressure
  • Supporting consistent coolant flow
  • Helping regulate engine operating temperature

Symptoms Of Wear Or Failure:
  • Coolant leaks near the upper engine area
  • Cracked, split, or hardened hose material
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Difficulty bleeding the cooling system
  • Fluctuating engine temperature readings
  • Coolant residue around hose fittings

Why Replacement Matters:
  • Maintain correct cooling system pressure
  • Prevent airlocks and circulation issues
  • Protect the engine from overheating damage
  • Restore reliable cooling system performance
  • Avoid costly repairs caused by cooling system failure



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

PAC121081A
PAC121081A
PAC121081

The product you are viewing cross references to these numbers
Hose connector y-piece for Porsche 970 Panamera / 95B Macan - 97010657060, 7PP121237
2
Hose connector y-piece for Porsche 970 Panamera / 95B Macan
7PP121237/1
Product Information
Product Information
Hose connector y-piece.


oematch

Fits:
Porsche 970 Panamera 3.0L 2014-2016 
Porsche 95B Macan V6 Petrol 2014-2018
Porsche 95B.2 Macan 2019*



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

7PP121237
97010657060
7PP121237

The product you are viewing cross references to these numbers
DISPLAYING 1 to 7 (of 7 products)
About Engine Block Hoses

Engine Block Coolant Hoses – Front Engine Porsche Models | Reliable Cooling for Peak Performance

Engine block coolant hoses are critical to maintaining stable engine temperatures and preventing overheating in your Porsche’s front-engine cooling system. These hoses circulate coolant between the engine block, radiator, and heater core, ensuring consistent temperature regulation and efficient heat dissipation — essential for performance, reliability, and longevity.

At Design911, we supply a complete selection of genuine and manufacturer-quality engine block coolant hoses for front-engine Porsche models, including the transaxle models, Cayenne, Panamera, and Macan. Each hose is precisely engineered for a perfect fit and superior heat resistance, offering the same durability, flexibility, and performance as factory-installed components.

What Do Engine Block Coolant Hoses Do?

Coolant hoses in the engine block are responsible for transferring coolant throughout the engine’s cooling circuit. Their main functions include:

  • Carrying coolant between the radiator, water pump, and engine block.
  • Regulating engine temperature for efficient performance.
  • Maintaining system pressure within the cooling system.
  • Preventing heat build-up that can lead to overheating or gasket failure.

Properly functioning coolant hoses are essential for ensuring your Porsche’s front-mounted engine operates within optimal temperature ranges — especially during heavy use or long drives.

Why Do Engine Block Coolant Hoses Fail?

Due to constant exposure to heat, pressure, and coolant chemicals, these hoses naturally degrade over time. Common causes of failure include:

  • Heat damage from prolonged exposure to high engine temperatures.
  • Rubber deterioration or cracking from age and coolant corrosion.
  • Leaks at joints or clamps due to pressure fluctuations.
  • Swelling or soft spots from internal chemical breakdown.
  • Mechanical abrasion from contact with nearby components.

Symptoms of failing hoses include visible coolant leaks, overheating, low coolant levels, or a strong coolant smell from the engine bay.

Why Replace Faulty Engine Block Coolant Hoses?

A leaking or weakened hose can cause serious cooling system failures, including overheating and engine damage. Replacing old or brittle hoses ensures reliable coolant circulation and safeguards your Porsche’s engine performance.

Benefits of replacement include:

  • Restored cooling efficiency and pressure control.
  • Prevention of leaks and overheating.
  • Improved long-term reliability and system safety.
  • Manufacturer-quality materials for perfect fit and heat resistance.

All replacement hoses in this range are constructed using reinforced, high-grade rubber compounds that meet or exceed factory standards, ensuring durability and dependability in all driving conditions.

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