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Expansion Tank Hoses
By OE Match
.jpg?width=197 "Breather Line For Water Tank. Porsche 95B Macan 3.0L / 3.6L 2014-18 - 95B121447, 95B121447E - 88876")
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
The OE MATCH Breather Line for Water Tank is a cooling system component designed to vent excess air and pressure from the coolant expansion tank while maintaining the correct operating conditions within the cooling system. This breather line helps ensure efficient coolant circulation and stable cooling system performance.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 22
Constructed from high-quality, heat-resistant reinforced hose, the breather line is engineered to withstand continuous exposure to coolant vapour, engine heat, pressure fluctuations and vibration. Precision-moulded for factory-correct routing, it provides secure, leak-free connections and supports the proper operation of the coolant expansion tank and engine cooling system.
What This Product Does:
- Vents air and coolant vapour from the coolant expansion tank.
- Helps regulate pressure within the cooling system.
- Maintains efficient coolant circulation.
- Supports proper filling and bleeding of the cooling system.
- Prevents air locks within the cooling circuit.
- Provides a secure, leak-free connection.
- Helps maintain stable engine operating temperatures.
- Forms an essential part of the engine cooling system.
Symptoms Of Wear Or Failure:
- Coolant leaks around the expansion tank.
- Visible cracks or splits in the hose.
- Coolant smell from the engine bay.
- Air entering the cooling system.
- Frequent coolant loss.
- Engine overheating.
- Coolant warning light or repeated low coolant warnings.
- White or coloured coolant residue around hose connections.
- Swollen, brittle or hardened hose material.
- Difficulty bleeding the cooling system after servicing.
Why Replacement Matters:
- The breather line is continually exposed to heat, coolant vapour, pressure changes and engine vibration. Over time, the hose material can harden, crack or lose flexibility, while connections may weaken, leading to coolant leaks or allowing air to enter the cooling system.
- A leaking or blocked breather line can disrupt pressure regulation within the coolant expansion tank, increasing the risk of air locks, coolant loss and engine overheating. Continued operation with a compromised cooling system can lead to reduced engine efficiency and potentially serious engine damage.
- Replacing a worn or damaged breather line restores the integrity of the cooling system and ensures the coolant expansion tank operates as designed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B121447E
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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