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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

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95B121109E
95B121109E

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