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Expansion Tank Hoses
By OE Match
.jpg?width=197 "Coolant Pipe To Expansion Tank. Porsche 95B Macan S 3.0L Diesel 2014-18 - 95B121049G, 95B121049B - A4228486")
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
The OE MATCH Coolant Pipe to Expansion Tank is a cooling system hose designed to transfer engine coolant between the cooling system and the expansion tank on compatible Porsche models. This coolant pipe plays a vital role in maintaining correct coolant circulation, pressure regulation and coolant level management, helping to ensure optimum engine operating temperatures.
Fits:
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Diagram Ref No 8
The coolant pipe is engineered to withstand continuous exposure to hot coolant, pressure fluctuations, engine vibration and repeated thermal cycling. Precision-moulded to match the original routing and connection points, it provides correct fitment and reliable leak-free performance, making it the ideal replacement during cooling system repairs or preventative maintenance.
What This Product Does:
- Transfers coolant between the engine cooling system and the expansion tank.
- Maintains correct coolant circulation and pressure.
- Supports the expansion and recovery of coolant during temperature changes.
- Helps regulate engine operating temperature.
- Prevents coolant loss through secure, leak-free connections.
- Works with the radiator, thermostat and water pump to maintain cooling system efficiency.
- Forms an essential part of the engine cooling system.
Symptoms Of Wear Or Failure:
- Coolant leaks around the hose or connections.
- Low coolant level requiring frequent topping up.
- Visible cracks, swelling or deterioration of the hose.
- Coolant residue around the expansion tank.
- Engine overheating.
- Sweet smell of coolant from the engine bay.
- Soft or collapsed coolant hose.
- Coolant warning light or low coolant message.
- Steam from the engine compartment caused by coolant leakage.
- Visible wear or damage to the hose ends.
Why Replacement Matters:
- The coolant pipe is continually exposed to hot coolant, internal pressure, engine vibration and repeated heating and cooling cycles. Over time, the hose material can harden, crack, swell or weaken, while the connection points may lose their sealing ability, increasing the risk of coolant leaks.
- A leaking or damaged coolant pipe can reduce coolant levels, allowing air to enter the cooling system and increasing the risk of engine overheating. Continued operation with insufficient coolant may lead to severe engine damage, including warped cylinder heads, failed head gaskets and premature wear of internal engine components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B121049G
The product you are viewing cross references to these numbers
OEMatch Expansion Tank Hoses — Durability, Sealing, Performance
OEMatch Expansion Tank Hoses for Porsche models form part of the vehicle's cooling system, linking the coolant reservoir to the engine and radiator. Proper hose condition supports stable pressure and coolant recovery during temperature changes and reduces the risk of leaks or overheating.
Available Types
- Moulded hose assemblies designed for specific mounting routes
- Reinforced rubber hoses with beaded ends for clamp connections
- Silicone high-temperature hoses used in some applications
Understanding OEMatch Expansion Tank Hoses
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original expansion tank hoses. OE (Original Equipment) refers to parts matching original specifications for the expansion tank hoses and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM expansion tank hoses engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Expansion tank hoses transfer coolant between the reservoir and the cooling circuit, accommodating pressure and volume changes as the engine warms and cools. They must resist heat, coolant chemistry and pressure to maintain sealing at connectors and clamps. On Porsche models these hoses follow specific routing and often include shaped sections or moulded ends to fit tight clearances.
Benefits Include
- Restored coolant flow and pressure regulation
- Reduced risk of leaks and air ingress into the cooling system
- Improved temperature stability for the engine and ancillary components
Why Expansion Tank Hoses Wear and Fail
- Repeated heat cycles causing rubber fatigue and cracking
- Degradation from coolant additives and chemical exposure
- Failure of clamps, connections or moulded terminations leading to leaks
The Importance of Replacing with OEMatch Expansion Tank Hoses
A failing expansion tank hose can allow coolant loss, introduce air into the circuit or upset system pressure, any of which can lead to overheating and potential engine damage. Replacing worn hoses is a preventative maintenance task that helps maintain cooling system integrity and avoids secondary faults.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Selected for Porsche applications to suit original routing and clearances
- Supplied in materials chosen for resistance to coolant and heat exposure
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
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