Coolant Hose. Porsche 987 Boxster / 987C Cayman / 997  ›  99710672307

OE Match coolant hose for replacement cooling-circuit component. When replacing we also recommend a coolant flush and replacement to remove any possible sludge formed over time. 

Fits

Porsche 987 Boxster
Porsche 987C Cayman
Porsche 997

Check fitment for your specific vehicle (model, year, engine) before ordering.

Diagram ref: 3

What This Product Does

The hose carries coolant through its section of the cooling circuit, providing a flexible connection between adjoining components. Its condition matters because deterioration or a leaking connection can allow coolant to escape.

Functions

• Conveys coolant through the connected pipework.
• Accommodates movement at the hose connection.
• Helps contain coolant within the circuit.
  
  

Technical Details

• Product reference: 99710672307.
• Related references: 99710672306, 99710672305 and 99710672304.
• Cooling-assembly diagrams specify two hoses per illustrated assembly
  
  

Symptoms of Fault

• Cracks, hardening or general hose deterioration.
• Swollen or unusually soft sections.
• Wet connections, staining or dried coolant deposits.
• A falling coolant level or recurring coolant warning.
• A sweet odour, gurgling or elevated engine temperature.
  
  

These signs can have several causes, so inspect the complete cooling circuit before identifying the hose as faulty.

Why Replacement Matters

Renewing a damaged hose addresses a potential source of coolant loss. Inspect adjoining connections, seals, retaining hardware and supports during the repair, particularly where rubbing or seepage is visible. Consider flushing the circuit and renewing the coolant to clear accumulated deposits, following the vehicle-specific servicing procedure.

FAQs

How can a suspected leak be located?
A cooling-system pressure test can help identify seepage from hoses and connections.

Why might coolant disappear without leaving a puddle?
Escaping fluid may collect on an undertray or evaporate, leaving deposits instead.

What should be checked before selecting this hose?
Confirm the vehicle details and compare the original reference with the numbers listed above.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710672307

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