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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
Fits:
Porsche 991 Carrera 2012-16
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99110662
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- 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
Fits:
Porsche 991.1 Carrera 2012-16
Porsche 981 Boxster 2012-16 incl. Boxster Spyder
Porsche 981C Cayman 2012-16 incl. Cayman GT4
Click 'Zoom in' for large parts diagram.
Diagram ref no 30
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99110676
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 991.1 Carrera 2012-16
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99110662
The product you are viewing cross references to these numbers
- 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 short radiator bottom return hose, left- and right-hand references identify the corresponding hose positions.
Fits
Porsche 991.1 Carrera 2012-16
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram ref no 9
What This Product Does
This short hose forms the radiator's lower return connection within the coolant circuit. It carries returning coolant through the radiator-section pipework; it is distinct from the longer supply hoses shown in the assembly diagrams.
Functions
- Provides a passage for returning coolant.
- Connects the radiator return section to adjoining coolant pipework.
- Accommodates movement at the hose connection.
Technical Details
- Component: short coolant radiator bottom return hose.
- Left-hand reference: 99110662502.
- Right-hand reference: 99110662602.
- Brand: OE Match.
- Diagram positions vary by application; match the reference to the required side.
Symptoms of Fault
- Coolant pooling beneath the front or collecting on the undertray.
- Damp connections, staining or dried deposits around hose ends.
- A sweet odour accompanied by falling coolant level.
- Cracked, swollen or softened hose sections.
- Low-coolant warnings, gurgling or increased engine temperature.
Why Replacement Matters
Renewing a deteriorated or leaking return hose addresses coolant loss at that connection. Inspect adjoining fittings, seals and retaining hardware during the repair, since an unresolved connection fault can cause further seepage. OE Match's Porsche-focused replacement programme uses application and original-reference checks to identify suitable components.
FAQs
How do I select the correct side?
Match the original reference and diagram position: 99110662502 identifies the left hose; 99110662602 identifies the right hose.
Does front-end coolant leakage confirm hose failure?
No. Inspect the radiator and neighbouring joints too; a cooling-system pressure test can help locate the source.
Why might a leak appear intermittently?
Seepage can become apparent only as coolant temperature and system pressure increase.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99110662
The product you are viewing cross references to these numbers
- 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