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Breather Line. Porsche 95B.2 Macan 2.0L Petrol 2019-21 ❭ 95B122909E
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- 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 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 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
- Porsche 95B.3 Macan S Petrol 2.9L V6 (380Bhp) 2022>>
- Porsche 95B.3 Macan GTS Petrol 2.9L V6 (440Bhp) 2022>>

Fits:
Porsche 971.1 Panamera / Panamera 4 3.0L V6 2017-21
Porsche 971.1 Panamera 4S 2.9L V6 2017-21
Porsche 971.1 Panamera 4 E-Hybrid 2.9L V6 2017-21
--
Porsche 971.2 Panamera / Panamera 4 2.9L V6 2021-24
Porsche 971.2 Panamera 4S 2.9L V6 2021-24
Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-24
Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-24
--
Porsche 976 Panamera / Panamera 4 2.9L V6 2024>>
--
Porsche 9YA Cayenne 3.0L V6 2018-24
Porsche 9YA Cayenne S 2.9L V6 2018-24
--
Porsche 9YA-2 Cayenne 3.0L V6 2023>>
--
Porsche 95B-2 Macan S / GTS / Turbo 2.9L V6 2019-25
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
- 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 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
Fits:
Porsche 95B.2 Macan S 3.0L V6 Petrol MKII 2019>>2021
Porsche 95B.2 Macan GTS 2.9L V6 Petrol MKII 2019>>2021
Porsche 95B.2 Macan Turbo 2.9L V6 MKII 2019>>2021
Cars With Engine Codes:
DLZ / DLZB / DGR / DGRB / DGRC
Porsche 971.1 Panamera 3.0L V6 MKI 2017>>2020
Porsche 971.1 Panamera 2.9L / 2.9L E-Hybrid MKI 2017>>2020
Cars With Engine Codes:
CSZ / CSZA / CSZB / CXT / CXTA / DGP / DGPA
Porsche 971.2 Panamera 2.9L / 2.9L E-Hybrid MKII 2021>>2023
Cars With Option Codes:
0K0 - Without Alternative Drive System
0K3 - Hybrid Propulsion System PHEV
Porsche 976 Panamera 2.9L / 2.9L E-Hybrid 2023>>
Porsche 9YA Cayenne 3.0L / 3.0L E-Hybrid 2018>>2023
Porsche 9YA Cayenne 2.9L / 2.9L E-Hybrid 2018>>2023
Cars With Engine Codes:
DCAB / DCA / DCBE / DCB
Porsche 9YB Cayenne / Cayenne S 3.0L / 3.0L E-Hybrid 2023>>
Diagram Ref No 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A712143713
The product you are viewing cross references to these numbers
- 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>>
The Coolant Hose for Reservoir, Lower is a genuine Porsche OEM coolant hose designed to connect the lower section of the coolant expansion tank to the engine cooling system. This hose plays an important role in maintaining proper coolant circulation and pressure balance by routing overflow and return coolant through the closed-loop cooling circuit. Manufactured to Porsche specifications, it provides precise fitment, excellent resistance to heat and coolant exposure, and long-term durability for Porsche Panamera (971 / 976) models.
Fits:
- 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>>
Diagram Ref No 10
What This Product Does:
- Routes coolant between the reservoir and cooling system, allowing coolant to move in and out as temperatures change.
- Returns overflow coolant back into the closed-loop cooling circuit during normal operation.
- Helps maintain proper coolant level and system pressure balance as the engine heats up and cools down.
- Provides a flexible, heat-resistant connection that accommodates engine movement and thermal expansion.
- Coolant may drip or seep from the hose body or connections, often leaving dried residue around the reservoir.
- A leaking reservoir hose can cause gradual coolant loss, leading to frequent topping up.
- Modern Porsche models will often warn you quickly if coolant level drops.
- A coolant smell in the engine bay is a common sign of leakage.
- Signs include cracking or splitting, swelling or bulging, hardened or brittle rubber, coolant staining on the hose surface.
- Coolant loss or air entering the system can reduce cooling efficiency and cause temperature issues.
- A failing reservoir hose may lead to improper pressure control, sometimes causing coolant to escape under pressure.
Why Replacement Matters:
- Prevents coolant leaks that can lead to low coolant levels and reduced cooling efficiency.
- Maintains proper pressure control, allowing the cooling system to expand and contract safely during temperature changes.
- Helps avoid engine overheating, since coolant loss or air intrusion can disrupt circulation.
- Protects nearby components, as leaking coolant can damage hoses, wiring, sensors, and surrounding engine parts.
- Restores reliable cooling system operation, ensuring overflow coolant is properly routed within the closed-loop system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
971122109E
The product you are viewing cross references to these numbers
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