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Radiator Top / Bottom Hoses
.jpg?width=197 "Engine Water Coolant Hose, Feed. Porsche 95B.1 / 95B.2 Macan 2.0L Petrol 2014-21 - 95B122101A")
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
Maintain reliable coolant circulation and effective engine temperature control with this Porsche Engine Water Coolant Feed Hose, part number 95B122101A. Designed for compatible Porsche applications, this hose forms part of the engine cooling circuit and carries coolant between the relevant cooling-system components.
Fits:
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
Diagram Ref No 16
Cooling-system hoses must safely contain hot, pressurised coolant while tolerating constant temperature changes, engine vibration and movement. Over time, rubber and reinforced hose materials can harden, soften, swell or develop cracks, while connections and sealing areas can also deteriorate.
A damaged coolant feed hose can cause anything from a small intermittent leak to rapid coolant loss. Insufficient coolant can quickly result in overheating, making deteriorated cooling hoses important preventative-maintenance items as vehicles age.
Replacing a worn or leaking hose with the correct Porsche Coolant Feed Hose 95B122101A helps restore a secure cooling circuit and dependable coolant flow.
What This Product Does:
- Carries engine coolant through the cooling system.
- Forms part of the coolant feed circuit.
- Provides a sealed connection between
- associated cooling-system components.
- Contains coolant while the system is hot and pressurised.
- Allows coolant to circulate as intended.
- Helps transfer heat away from the engine.
- Supports stable engine operating temperatures.
- Accommodates normal engine movement and vibration.
- Helps prevent coolant loss.
- Supports efficient radiator and cooling-system operation.
- Helps protect the engine against overheating.
- Replaces a cracked, swollen, leaking or deteriorated coolant hose.
- Provides a Porsche replacement component for compatible applications.
Symptoms Of Wear Or Failure:
- Visible coolant leakage.
- Coolant level repeatedly dropping.
- Low coolant warning.
- Engine temperature higher than normal.
- Engine overheating.
- Temperature fluctuations.
- Coolant smell from the engine compartment.
- Steam from the engine bay.
- Wetness around the hose or connections.
- Dried or crystallised coolant residue.
- Cracks in the hose surface.
- Bulging or swelling.
- Hose becoming unusually soft.
- Hose becoming hard or brittle.
- Splitting around connection points.
- Damaged or deteriorated hose ends.
- Leakage that becomes more noticeable when the engine is hot.
- Coolant collecting beneath the vehicle.
Why Replacement Matters:
- The engine cooling system relies on maintaining the correct quantity of coolant and circulating it through a sealed system.
- A deteriorated feed hose can gradually lose coolant or fail suddenly. If enough coolant is lost, the cooling system may no longer be able to control engine temperature effectively.
- Replacing a deteriorated Porsche Coolant Hose 95B122101A before complete failure can therefore prevent a relatively straightforward cooling-system repair from developing into a much more expensive engine problem.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B122101A
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
Maintain reliable coolant circulation and effective engine temperature control with this OE Match Engine Water Coolant Feed Hose. Designed for compatible Porsche applications, this hose forms part of the engine cooling circuit and carries coolant between the relevant cooling-system components.
Fits:
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
Diagram Ref No 16
The engine cooling system operates under significant heat and pressure. Coolant hoses must remain flexible enough to accommodate engine movement and thermal expansion while also maintaining a secure, leak-free connection.
Over time, repeated heating and cooling cycles can cause coolant hoses to harden, soften, swell or crack. Connection points and sealing surfaces can also deteriorate, potentially allowing coolant to escape.
Even a relatively small coolant leak can eventually reduce the system level enough to compromise engine cooling. Replacing a deteriorated hose with this OE Match Coolant Feed Hose helps restore a secure coolant circuit and dependable engine temperature management.
What This Product Does:
- Carries coolant through the engine cooling system.
- Forms part of the coolant feed circuit.
- Provides a sealed connection between associated cooling components.
- Contains hot, pressurised engine coolant.
- Supports continuous coolant circulation.
- Helps transfer heat away from the engine.
- Supports stable engine operating temperatures.
- Accommodates normal engine movement and vibration.
- Helps prevent coolant loss.
- Supports efficient cooling-system operation.
- Helps protect the engine against overheating.
- Replaces a cracked, swollen, leaking or deteriorated hose.
- Provides an OE Match replacement for compatible Porsche applications.
Symptoms Of Wear Or Failure:
- Visible coolant leakage.
- Coolant level repeatedly dropping.
- Low coolant warning.
- Engine running hotter than normal.
- Engine overheating.
- Unusual temperature fluctuations.
- Coolant smell from the engine compartment.
- Steam from the engine bay.
- Wetness around the hose or its connections.
- Dried or crystallised coolant deposits.
- Cracks in the hose surface.
- Splitting around the hose ends.
- Bulging or swelling.
- Hose becoming unusually soft.
- Hose becoming hard or brittle.
- Damaged connection points.
- Leakage appearing primarily when the engine is hot.
- Coolant collecting underneath the vehicle.
Why Replacement Matters:
- The cooling system must maintain the correct coolant quantity and circulate it efficiently to control engine temperature.
- A deteriorated coolant hose can cause gradual leakage or, in severe cases, fail suddenly and release a substantial amount of coolant.
- Replacing a deteriorated OE Match Coolant Feed Hose before complete failure can help prevent overheating and considerably more expensive engine repairs.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B122101A
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 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.
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