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Radiator Top / Bottom Hoses
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
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
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
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 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B122101K
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
This Water Coolant Top Hose (Feed) is an OE Match radiator feed hose designed to replace the original upper coolant hose on the Porsche 95B Macan 2.0L. This hose is part of the top-end cooling circuit, directing hot coolant from the engine towards the radiator for heat dissipation.
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 16
The top coolant hose plays a vital role in the engine’s thermal management system, carrying coolant between the thermostat outlet and the top connection of the radiator. On turbocharged engines like the 2.0L Macan’s, coolant temperatures and pressure fluctuations can be more extreme, so this hose must meet high standards for durability, temperature resistance, and fluid compatibility.
The water coolant top (feed) hose:
• Transports hot coolant from the engine to the radiator
• Supports stable engine temperature regulation
• Helps prevent overheating during load or high ambient conditions
• Maintains correct coolant pressure and flow
A properly functioning top coolant hose ensures your engine operates within its designed temperature range, protecting internal components from thermal stress and wear.
Coolant hoses degrade over time due to heat cycles, pressure variations, and chemical exposure. A compromised top coolant hose can lead to:
• Coolant leaks at connections or along the hose body
• Reduced coolant flow and elevated engine temperature
• Overheating under load or in high ambient conditions
• Hose swelling, cracking, or collapse.
Replacing aged or damaged hoses with an OE Match part restores proper coolant circulation and helps protect your engine from heat-related failures.
Replace the top coolant hose if you notice:
• Coolant stains or drips around hose ends
• Swollen, soft, cracked, or brittle hose material
• Coolant smell from the engine bay
• Rising temperature gauge under load
• During water pump, thermostat, or radiator service
• Preventative maintenance on ageing vehicles
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B122101K
The product you are viewing cross references to these numbers
Radiator Top & Bottom Hoses – Reliable Cooling for Porsche Performance
Radiator top and bottom hoses are vital components of your Porsche’s cooling system, responsible for transporting coolant between the radiator and the engine. The top hose carries hot coolant from the engine to the radiator for cooling, while the bottom hose returns the cooled fluid back to the engine, maintaining optimal operating temperatures for performance, efficiency, and reliability.
At Design911, we offer a full range of genuine and manufacturer-quality radiator top and bottom hoses for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each hose is precision-engineered for perfect fitment, high pressure tolerance, and exceptional heat resistance — ensuring reliable cooling under the most demanding driving conditions.
What Do Radiator Top and Bottom Hoses Do?
Coolant hoses are the lifelines of your Porsche’s cooling
system, and the radiator hoses perform the following key functions:
- Carry
coolant between the radiator and the engine.
- Regulate
engine temperature for consistent performance.
- Maintain
coolant pressure throughout the cooling circuit.
- Prevent overheating by ensuring efficient heat transfer.
Both the top and bottom hoses are designed to withstand high heat, vibration, and coolant pressure, providing dependable performance in every driving scenario.
Why Do Radiator Hoses Fail?
Over time, radiator hoses deteriorate due to heat, pressure,
and exposure to coolant. Common causes of hose failure include:
- Rubber
cracking or hardening from continuous heat cycles.
- Swelling
or soft spots due to coolant chemical breakdown.
- Leaks
at hose ends or clamps from pressure loss.
- Abrasion
damage caused by engine vibration or contact.
- Age-related material fatigue, especially in older vehicles.
Symptoms of hose failure include coolant leaks, visible cracks or bulges, fluctuating engine temperature, or a noticeable coolant smell in the engine bay.
Why Replace Faulty Radiator Hoses?
A leaking or weakened radiator hose can lead to overheating, coolant loss, and potential engine damage. Replacing these hoses as part of routine maintenance ensures consistent cooling performance and reliability.
Benefits of replacement include:
- Restored coolant flow and temperature stability.
- Prevention of leaks and overheating.
- Improved cooling system pressure and performance.
- Manufacturer-quality materials for long-term durability.
All radiator hoses in this range are made using reinforced, high-grade rubber and polymer compounds, designed to meet or exceed factory specifications for heat resistance, flexibility, and longevity.
