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- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
OE Match long-feed radiator top coolant hose, confirm the required side before ordering.
Fits
- Porsche 991 Carrera 2012-16
- Porsche 981 Boxster 2012-16
- Boxster 981 2.7L 2012–16
- Porsche 981 Boxster Spyder 2016
- Porsche 981C Cayman 2014-16
- Porsche 981C Cayman GT4 2016
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram ref no 10
What This Product Does
This hose carries coolant along the radiator supply connection. It forms part of the circuit linking the radiator with the vehicle’s cooling pipework; it is the long feed version, rather than the short return hose.
Functions
- Provides a passage for coolant at the radiator feed connection.
- Connects the relevant radiator inlet to the adjoining coolant pipework.
- Accommodates movement at the flexible connection.
Technical Details
- Brand: OE Match.
- Configuration: long radiator supply hose, top connection.
- Left version reference: 99110662102.
- Right version reference: 99110662202.
- Diagram positions vary by application; match the reference and side rather than relying on the item number alone.
Symptoms of Fault
- Coolant collecting beneath the vehicle’s front end.
- Moisture or dried deposits at hose connections.
- A falling coolant level or dashboard level alert.
- A sweet odour near the radiator pipework.
- Cracks, bulging or unusually soft hose sections.
- Higher temperature readings or escaping steam.
Why Replacement Matters
A leaking or deteriorated feed hose can allow coolant to escape. Renewing a confirmed faulty hose addresses that source of fluid loss. Check adjacent fittings, clips and sealing surfaces during the repair, since damage elsewhere can cause leakage to recur. OE Match develops replacement components around Porsche applications, with reference matching and fitment assessment forming part of its product evaluation.
FAQs
How can I distinguish a hose leak from a radiator leak?
Inspect the hose ends alongside the radiator joints and end tanks. A cooling-system pressure test can help locate the source.
Why does leakage sometimes appear only after a journey?
A marginal connection may seep only while the cooling circuit is hot and pressurised.
Should the retaining hardware also be checked?
Yes. Inspect clips, clamps and adjoining fittings, replacing damaged or unsuitable components as required.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99110662
The product you are viewing cross references to these numbers
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Genuine Porsche Upper radiator coolant hose - part of the core engine cooling system that moves radiator coolant effectively between components.
Sold each, Fits left or right side.
Fits:
Porsche 996 C4S 2002 - 2005
Porsche 996 Turbo 2001 - 2005
This product supersedes Porsche's old part numbers: 99610662174, 99610662178
Diagram Ref No 11.
The radiator coolant hose plays a vital role in the engine cooling system by transporting hot coolant from the engine to the radiator and returning cooled coolant back to the engine. This circulation helps regulate operating temperature, ensuring the engine stays within its optimal thermal range and preventing overheating during normal driving conditions.
Installed as part of the upper radiator hose system, the 99610662179:
• Transfers coolant between the radiator and engine cooling passages
• Helps maintain proper engine temperature control
• Supports consistent engine performance and longevity
• Uses durable rubber and reinforcement to withstand high heat, pressure, and vibration.
Replace this hose if you notice:
• Coolant leaks or wetness around the hose ends
• Cracks, bulges, or soft spots in the hose material
• Overheating or fluctuating engine temperatures
• During a cooling system overhaul or replacement of related hardware
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662179
The product you are viewing cross references to these numbers
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Fits:
Porsche 996 C4S 2002>>
Porsche 996 Turbo
This product supersedes Porsche's old part numbers:
- 99610662574
- 99610662578
Diagram Ref No 12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662579
The product you are viewing cross references to these numbers
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Fits:
Porsche 996 C4S 2002>>
Porsche 996 turbo
This product supersedes Porsche's old part numbers:
- 99610662674 99610662677
Diagram Ref No 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610662678
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
Fits:
Porsche 996 Turbo 2001-05
This product supersedes Porsche's old part numbers:
- 99610663973
- 99610663975
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610663976
The product you are viewing cross references to these numbers