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Coolant hose Genuine Porsche part 95B121109H

Coolant hose 95B121109H
Code: 95B121109H
Genuine Porsche part
Coolant hose
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
Water coolant bottom hose, return. Porsche 95B Macan 2.0L - 95B121109F, 95B121109J
2
Water coolant bottom hose, return. Porsche 95B Macan 2.0L
Special Order item
95B121109J
Product Information
Product Information
Water coolant bottom hose, return. 

Fits:
Porsche 95B.1 Macan 2.0L 2014 - 2018
  * Engine codes: CNC,CNCC, CYN,CYNA, CYNB,CYP, CYPA

Porsche 95B.2 Macan 2.0L 2019 - 2021
  * PR: T2G / T2G

Porsche 95B.23 Macan 2.0L 2022 >>
 * PR: T2G / T2G

Diagram ref no 17

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Related, superseded, cross reference or alternative numbers for comparison.

95B121109J
95B121109F
95B121109J

The product you are viewing cross references to these numbers
Water coolant bottom hose, return. Porsche 95B Macan 2.0L - 95B121109F, 95B121109J - GPBH-21109
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Water coolant bottom hose, return. Porsche 95B Macan 2.0L
95B121109J/1
Product Information
Product Information
Water coolant bottom hose, return. 
This Water Coolant Bottom Hose (Return) is a precision-engineered OE Match coolant hose designed to replace the factory lower radiator return hose on the Porsche 95B Macan 2.0 L petrol SUV. This hose carries coolant back to the engine after it exits the radiator, completing the primary coolant circulation loop.

Fits:
Porsche 95B.1 Macan 2.0L 2014 - 2018
  * Engine codes: CNC,CNCC, CYN,CYNA, CYNB,CYP, CYPA

Porsche 95B.2 Macan 2.0L 2019 - 2021
  * PR: T2G / T2G

Porsche 95B.23 Macan 2.0L 2022 >>
 * PR: T2G / T2G

Diagram ref no 17

The Macan’s 2.0 L turbocharged engine relies on a closed-loop liquid cooling system to maintain stable operating temperatures. While the top coolant hose (feed) delivers hot coolant from the engine to the radiator for heat rejection, the bottom hose (return) completes the cycle by returning cooled fluid back to the engine. Both pathways must be free of restrictions, leaks, and surface deterioration to ensure consistent thermal control.

The bottom coolant return hose:
• Carries cooled coolant back to the engine from the radiator
•  Maintains consistent coolant flow and pressure
•  Supports stable engine temperature regulation
•  Helps prevent overheating and engine stress

Maintaining a healthy return hose is essential for balanced cooling system performance and long-term engine reliability.

Hoses in the cooling system are subject to constant heat cycling, coolant pressure, and mechanical movement. Over time they can:
•  Harden or crack
•  Soften and swell
•  Leak at hose connections
•  Restrict coolant flow

A failing return hose can reduce coolant circulation, cause hot spots within the engine, and lead to overheating, coolant loss, or pressure imbalance in the system. Replacing with a new OE Match hose helps restore proper coolant routing and preserves engine health.

Replace this hose if you notice:
•  Coolant leaks at the hose ends
•  Visible cracks, soft spots, or bulges
•  Overheating during normal driving
•  Coolant smell from under the vehicle
•  During water pump, thermostat, or radiator service
•  As preventative maintenance on high-mile vehicles

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

95B121109J
95B121109F
95B121109J

The product you are viewing cross references to these numbers
Radiator coolant bottom hose. Porsche 95B.1 Macan S / GTS / turbo - 95B121109E - 79774
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Radiator coolant bottom hose. Porsche 95B.1 Macan S / GTS / turbo
95B121109E/1
Product Information
Product Information
Radiator coolant bottom hose
This Radiator Coolant Bottom Hose is a precision-engineered OE Match return coolant hose designed to replace the original lower radiator hose on Porsche 95B.1 Macan S, GTS, and Turbo models. It carries cooled engine coolant from the radiator back to the engine - completing the core cooling loop.

Fits:
Porsche 95B.1 Macan S 3.0L Petrol 2014 - 2018
Porsche 95B.1 Macan GTS  3.0L 2014 - 2018
Porsche 95B.1 Macan turbo 3.6L 2014 - 2018

Diagram ref no 24

The Macan’s turbocharged engines require reliable coolant circulation to maintain ideal temperatures under all driving conditions. The bottom radiator hose (also known as the return hose) plays a crucial role in transporting coolant after it has been cooled in the radiator. It must withstand heat, pressure, vibration, and continual flexing without cracking, softening, or leaking.

This OE Match hose is manufactured to match the original Porsche specification for:
• Internal diameter and flow capacity
• Bend radii and routing paths
• Wall thickness and thermal resistance
•  Corrosion-resistant specimen materials.

The hose is made from high-grade EPDM rubber with reinforcement layers to ensure long-lasting durability and resistance to pressure spikes and coolant exposure. Designed for direct replacement of the original Porsche part, it installs easily into the factory routing and seals.

The radiator return hose is exposed to hot coolant, pressure cycling, and engine bay movement. Over time, the hose can deteriorate - causing coolant leaks, reduced flow, and elevated engine temperatures. A compromised return hose increases the risk of engine overheating, reduced heater output, and potential engine damage under sustained load. Replacing a worn or aged hose with an OE Match radiator bottom hose helps ensure the cooling system functions properly, protects internal components, and preserves performance and reliability.

Replace this hose if you observe:
•  Visible cracks, soft spots, or swelling
•  Coolant leakage at hose ends or body
•  Overheating or fluctuating temperature gauge readings
•  Hardened, brittle, or collapsed hose material
•  During water pump, thermostat, or radiator servicing
•  Preventative maintenance on high-mile vehicles

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

95B121109E
95B121109E

The product you are viewing cross references to these numbers
Radiator coolant bottom hose. Porsche 95B.1 Macan S / GTS / turbo - 95B121109E
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Radiator coolant bottom hose. Porsche 95B.1 Macan S / GTS / turbo
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95B121109E
Product Information
Product Information
Radiator coolant bottom hose. 


porsche

Fits:
Porsche 95B.1 Macan S Petrol - 2014 to 2018
Porsche 95B.1 Macan GTS  - 2014 to 2018
Porsche 95B.1 Macan turbo - 2014 to 2018

Click 'Zoom in' for large parts diagram.
Diagram ref no 24



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

95B121109E
95B121109E

The product you are viewing cross references to these numbers
RIGHT Coolant Hose, Return. Porsche 95B.2 Macan 2.9L / 3.0L 2019-21 - 95B121109H
2
RIGHT Coolant Hose, Return. Porsche 95B.2 Macan 2.9L / 3.0L 2019-21
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95B121109H
Product Information
Product Information
RIGHT Coolant Hose, Return.

The Right Coolant Hose – Return is a genuine Porsche cooling system component designed to return coolant through the right-hand side of the engine cooling circuit. As a return hose, it carries coolant back through the system after heat exchange, ensuring continuous circulation and stable temperature regulation.

Fits:

  • 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 3

What This Product Does:

  • Carrying coolant back through the cooling circuit
  • Maintaining consistent coolant flow
  • Supporting correct cooling system pressure
  • Helping regulate engine operating temperature
  • Ensuring efficient heat dissipation and circulation

Symptoms Of Wear Or Failure:
  • Coolant leaks from the right side of the engine bay
  • Cracked, brittle, swollen, or soft hose material
  • Coolant smell from the engine compartment
  • Low coolant warning light
  • Engine overheating or fluctuating temperature readings
  • Steam from the engine area
  • Coolant residue around hose connections

Why Replacement Matters:
  • Prevent sudden coolant leaks and roadside breakdowns
  • Maintain proper coolant circulation and temperature control
  • Protect engine components from heat damage
  • Restore cooling system reliability
  • Avoid costly repairs caused by overheating



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

95B121109H
95B121109H

The product you are viewing cross references to these numbers
RIGHT Coolant Hose, Return. Porsche 95B.2 Macan 2.9L / 3.0L 2019-21 - 95B121109H
2
RIGHT Coolant Hose, Return. Porsche 95B.2 Macan 2.9L / 3.0L 2019-21
95B121109H/1
Product Information
Product Information
RIGHT Coolant Hose, Return.

The Right Coolant Hose – Return is a OE MATCH cooling system component designed to return coolant through the right-hand side of the engine cooling circuit. As a return hose, it carries coolant back through the system after heat exchange, ensuring continuous circulation and stable temperature regulation.

Fits:

  • 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 3

What This Product Does:

  • Carrying coolant back through the cooling circuit
  • Maintaining consistent coolant flow
  • Supporting correct cooling system pressure
  • Helping regulate engine operating temperature
  • Ensuring efficient heat dissipation and circulation

Symptoms Of Wear Or Failure:
  • Coolant leaks from the right side of the engine bay
  • Cracked, brittle, swollen, or soft hose material
  • Coolant smell from the engine compartment
  • Low coolant warning light
  • Engine overheating or fluctuating temperature readings
  • Steam from the engine area
  • Coolant residue around hose connections

Why Replacement Matters:
  • Prevent sudden coolant leaks and roadside breakdowns
  • Maintain proper coolant circulation and temperature control
  • Protect engine components from heat damage
  • Restore cooling system reliability
  • Avoid costly repairs caused by overheating



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

95B121109H
95B121109H

The product you are viewing cross references to these numbers
Coolant Hose, Return. Porsche 95B Macan S 3.0L Diesel 2014-18 - 95B121109B
2
Coolant Hose, Return. Porsche 95B Macan S 3.0L Diesel 2014-18
Special Order item
95B121109B
Product Information
Product Information
Coolant Hose, Return.

The Coolant Hose – Return is a genuine Porsche cooling system component designed to carry coolant back through the cooling circuit after it has absorbed heat from the engine. As a return hose, it plays a key role in completing the cooling loop and ensuring efficient heat exchange through the radiator system.

Fits:

  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18


Diagram Ref No 12

What This Product Does:

  • Carrying heated coolant back through the cooling system
  • Maintaining consistent coolant circulation
  • Supporting correct cooling system pressure
  • Helping regulate engine operating temperature
  • Ensuring efficient heat dissipation

Symptoms Of Wear Or Failure:
  • Coolant leaks near the hose or connection points
  • Cracked, brittle, swollen, or softened hose material
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Engine overheating or fluctuating temperature readings
  • Steam from the engine compartment
  • Coolant residue around hose clamps or fittings

Why Replacement Matters:
  • Prevent sudden coolant leaks and breakdowns
  • Maintain proper coolant circulation and temperature control
  • Protect engine components from heat damage
  • Restore reliable cooling system performance
  • Avoid costly repairs caused by overheating



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

95B121109B
95B121109B

The product you are viewing cross references to these numbers
Coolant Hose, Return. Porsche 95B Macan S 3.0L Diesel 2014-18 - 95B121109B
2
Coolant Hose, Return. Porsche 95B Macan S 3.0L Diesel 2014-18
95B121109B/1
Product Information
Product Information
Coolant Hose, Return.

The Coolant Hose – Return is a OE MATCH cooling system component designed to carry coolant back through the cooling circuit after it has absorbed heat from the engine. As a return hose, it plays a key role in completing the cooling loop and ensuring efficient heat exchange through the radiator system.

Fits:

  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18


Diagram Ref No 12

What This Product Does:

  • Carrying heated coolant back through the cooling system
  • Maintaining consistent coolant circulation
  • Supporting correct cooling system pressure
  • Helping regulate engine operating temperature
  • Ensuring efficient heat dissipation

Symptoms Of Wear Or Failure:
  • Coolant leaks near the hose or connection points
  • Cracked, brittle, swollen, or softened hose material
  • Coolant smell from the engine bay
  • Low coolant warning light
  • Engine overheating or fluctuating temperature readings
  • Steam from the engine compartment
  • Coolant residue around hose clamps or fittings

Why Replacement Matters:
  • Prevent sudden coolant leaks and breakdowns
  • Maintain proper coolant circulation and temperature control
  • Protect engine components from heat damage
  • Restore reliable cooling system performance
  • Avoid costly repairs caused by overheating



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

95B121109B
95B121109B

The product you are viewing cross references to these numbers
Radiator water / coolant and pipe kit. Porsche 95B Macan 2.0L - 9A712125110, 95B122101A, 95B122101K, 95B121109F, 95B121109J
3
Radiator water / coolant and pipe kit. Porsche 95B Macan 2.0L
RADKIT95B.20.OEM
Product Information
Product Information
Radiator water / coolant and pipe kit
This OE Match Radiator Water/Coolant + Hose kit is a complete front-end cooling system refresh solution for the Porsche 95B Macan 2.0 L. It includes a direct-fit OE Match radiator core, matching radiator coolant hoses, and a full set of genuine Porsche rubber radiator mounts — everything needed to replace old cooling components and restore proper coolant flow and radiator support.

Fits:
Porsche 95B.1 Macan 2.0L 2014 - 2018
  * Engine codes: CNC,CNCC, CYN,CYNA, CYNB,CYP, CYPA

Porsche 95B.2 Macan 2.0L 2019 - 2021
  * PR: T2G / T2G

Porsche 95B.23 Macan 2.0L 2022 >>
 * PR: T2G / T2G

(1) Diagram ref no. 1, 2, 4 and 6
(2) Diagram ref no. 16 and 17


Efficient cooling is essential for performance, reliability, and long-term engine health - especially in turbocharged engines like the Macan 2.0 L. This comprehensive kit brings together the most critical cooling system parts:

• OE Match Radiator – OE ref no 9A712125110
Designed to replicate factory cooling performance, the radiator core efficiently transfers heat from the engine coolant into ambient air. High-quality aluminium construction and correct inlet/outlet positions ensure direct fitment and reliable thermal management.

•  OE Match Radiator Coolant Hoses:
   Radiator Coolant Top Hose (Feed) -  OE ref no 95B122101K - Carries hot coolant from the engine to the radiator.
   Radiator Coolant Bottom Hose (Return) -  OE ref no 95B121109J –  Routes cooled fluid back to the engine to complete the cooling loop.
Both hoses are engineered to match original hose geometry, diameter, and resilience against heat and pressure.

•  Genuine Radiator Mounts
A full set of genuine Porsche rubber mounts: 8K0121276A (×2) 4H0121268A (×2) 8K0121275C (×2). These mounts provide secure, vibration-isolated support, ensuring the radiator stays properly positioned and protected from chassis vibration and road shock.

By combining OE Match cooling parts with genuine mounting hardware, this kit restores not only cooling capacity but also proper fitment and long-term serviceability.

Coolant hoses and radiators are subject to heat, pressure, age-related degradation, and road debris over time. Hoses can soften, crack, or leak, and radiators can lose efficiency or develop pinhole leaks. Poor cooling performance raises engine temperatures, stresses internal components, and reduces reliability. Genuine rubber mounts also age, leading to vibration transfer and alignment issues.

Replacing these parts together as a kit ensures:
•  Proper coolant circulation
•  Strong, leak-free hose joints
•  Effective heat rejection
•  Secure radiator support

Replace this kit when:
•  Coolant leaks are present
•  Hoses show cracking, swelling, or softness
•  Radiator cores show damage, corrosion, or clogging
•  Excessive engine temperature fluctuations
•  During water pump, thermostat, or cooling system service
•  Preventative maintenance on higher-mile vehicles

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

RADKIT95B.20.OEM
9A712125110
95B122101A
95B122101K
95B121109F
95B121109J

The product you are viewing cross references to these numbers