Coolant return hose. Porsche 970 Panamera S / 4S / GTS / Turbo / Turbo S / Turbo Executive 4.8L 2009-16  ›  97010640102

OE Match coolant return hose, this is the return line within the coolant expansion tank assembly.

Fits

• Porsche 970 Panamera S / GTS / Turbo 4.8L 2010-16
  
  

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

Diagram ref no 34

What This Product Does

This hose provides a passage for returning coolant within the engine cooling circuit. It forms part of the expansion tank pipework; it is not the tank, cap, level sender or adjacent breather line.

Functions

• Routes coolant through the return connection.
• Connects the relevant sections of cooling-system pipework.
• Contains coolant along the return path when correctly installed.
  
  

Technical Details

• Brand: OE Match.
• Part reference: 97010640102.
• Component identification: coolant hose, return line.
• Engine/model identifiers recorded for this part: 4820, 4840, 4870, CXPA, CXRA, CXR, CWBA, CWB, CWCA, CWC.
  
  

Symptoms of Fault

• Moisture around the hose or its connections.
• Dried coolant deposits near joints.
• A sweet odour accompanied by coolant loss.
• Repeated low-coolant warnings.
• Visible splits, swelling or softened areas.
• Leakage that becomes apparent after driving.
• Gurgling noises or an increase in engine temperature.

These signs can originate elsewhere in the cooling system. Confirm the leak location before replacing the hose.

Why Replacement Matters

A deteriorated return hose can allow coolant to escape, leaving the cooling circuit unable to operate correctly. Renewing a confirmed leaking or damaged hose addresses that fault rather than relying on repeated top-ups. Inspect adjoining connections, retaining clips and sealing surfaces during the repair, as worn supporting components can cause further leakage.

FAQs

How can a suspected hose leak be confirmed?
Inspect the hose and connections for fresh moisture and deposits. A cooling-system pressure test can help identify the source.

Should the connections be checked too?
Yes. Examine clips, seals and connecting fittings rather than assuming the hose alone is responsible.

Why might leakage appear only intermittently?
A weakened joint may leak only when the coolant is hot and the system is pressurised.