2005-2008 Porsche Radiator Coolant Hose / Line (RETURN) Left 99710662503

Porsche Part #: 997-106-625-03 (99710662503)

$39.99
Side: Left Used
Donor2007 Porsche BOXSTER · 2.7L
SKU: 693476 · 30-Day Returns
✓ Free Same Day Shipping on orders by noon CT
Only 1 in stock — no guaranteed restock
Radiator Coolant Hose / Line (RETURN) 99710662503 — Used (SKU 693476)
Genuine OEM Used SKU: 693476 Donor Vehicle: 2007 Porsche BOXSTER · 2.7L 2 photos
$39.99
30-Day Returns
  • Genuine OEM — real photos
  • 30-day returns on eligible parts
  • eBay Top Rated · 100,000+ positive ratings
  • Ships from our own indoor warehouse

This left-side Radiator Coolant Hose / Line (return), OEM 99710662503, is a genuine used part from a Porsche. It serves as the return line in the cooling system, routing coolant back to the radiator after it has passed through the engine. A cracked or leaking hose here can lead to coolant loss, overheating, or visible drips under the hood. This particular line fits naturally aspirated and turbocharged 2.7L, 3.2L, 3.4L, 3.6L, and 3.8L flat-six engines from Porsche 911, Boxster, and Cayman models—critical for a properly sealed cooling circuit.

Specifications

Specifications for Radiator Coolant Hose / Line (RETURN) 99710662503
Fits Vehicle Model911, Boxster, Cayman
Fits Vehicle MakePorsche
Porsche Part No997-106-625-03 (99710662503)
SideLeft
CategoryRadiator / Coolant

Compatible Vehicles

Fits 62 vehicle configurations across 1 make, 2005-2008.

Check your specific vehicle before ordering. This list shows year, make, and model. Some years have multiple trims or engines that use different parts, and individual listings may have additional fitment notes (e.g. “with sunroof only”). Review the full variant list below, or message us with your VIN and we’ll confirm the match.

Porsche

  • 911 2005-2008 · 48 variants 48 with notes
  • Boxster 2005-2008 · 9 variants
  • Cayman 2006-2008 · 5 variants
View all 62 vehicle configurations — 48 with fitment notes
Full vehicle fitment list for Radiator Coolant Hose / Line (RETURN) 99710662503
Year Make Model Trim Engine Note
2005 Porsche 911 Carrera S Coupe 3.8L For Vehicles with Engine Code(s) 9701
2007 Porsche 911 Carrera 4 Coupe 3.6L For Vehicles with Engine Code(s) 9605
2006 Porsche 911 Carrera Coupe 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Carrera Coupe 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Carrera 4 Convertible 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Carrera Convertible 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 GT3 RS Coupe 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 GT2 Coupe 3.6L Turbo For Vehicles with Engine Code(s) 9605
2005 Porsche 911 GT2 Coupe 3.6L Turbo For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Carrera 4 Coupe 3.6L For Vehicles with Engine Code(s) 9605
2006 Porsche 911 Carrera Convertible 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 GT3 Coupe 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Turbo Convertible 3.6L Turbo For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Carrera 4S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2007 Porsche 911 Turbo Coupe 3.6L Turbo For Vehicles with Engine Code(s) 9605
2006 Porsche 911 Carrera S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2008 Porsche 911 Carrera Coupe 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Carrera S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2008 Porsche 911 Carrera Convertible 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 GT3 RS Coupe 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Targa 4 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Targa 4 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Targa 4S 3.8L For Vehicles with Engine Code(s) 9701
2007 Porsche 911 Targa 4S 3.8L For Vehicles with Engine Code(s) 9701
2006 Porsche 911 Carrera 4 Coupe 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Carrera 4 Convertible 3.6L For Vehicles with Engine Code(s) 9605
2006 Porsche 911 Carrera 4 Convertible 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Carrera 4S Coupe 3.8L For Vehicles with Engine Code(s) 9701
2005 Porsche 911 Turbo Coupe 3.6L Turbo For Vehicles with Engine Code(s) 9605
2008 Porsche Boxster S Convertible 3.4L
2008 Porsche Boxster Convertible 2.7L
2007 Porsche Boxster Convertible 2.7L
2007 Porsche Cayman Hatchback 2.7L
2008 Porsche Boxster RS 60 Spyder Convertible 3.4L
2008 Porsche Cayman S Hatchback 3.4L
2008 Porsche Cayman Hatchback 2.7L
2007 Porsche Cayman S Hatchback 3.4L
2006 Porsche Boxster S Convertible 3.2L
2006 Porsche Boxster Convertible 2.7L
2007 Porsche Boxster S Convertible 3.4L
2006 Porsche Cayman S Hatchback 3.4L
2005 Porsche Boxster Convertible 2.7L
2005 Porsche Boxster S Convertible 3.2L
2005 Porsche 911 Carrera S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2008 Porsche 911 Carrera S Coupe 3.8L For Vehicles with Engine Code(s) 9701
2005 Porsche 911 Carrera Coupe 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Carrera S Coupe 3.8L For Vehicles with Engine Code(s) 9701
2005 Porsche 911 Turbo S Coupe 3.6L Turbo For Vehicles with Engine Code(s) 9605
2005 Porsche 911 Carrera 4S Coupe 3.6L For Vehicles with Engine Code(s) 9605
2008 Porsche 911 Turbo Coupe 3.6L Turbo For Vehicles with Engine Code(s) 9605
2005 Porsche 911 Carrera 4S Convertible 3.6L For Vehicles with Engine Code(s) 9605
2005 Porsche 911 Turbo S Convertible 3.6L Turbo For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Carrera S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2007 Porsche 911 Carrera 4S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2005 Porsche 911 GT3 Coupe 3.6L For Vehicles with Engine Code(s) 9605
2006 Porsche 911 Carrera S Coupe 3.8L For Vehicles with Engine Code(s) 9701
2005 Porsche 911 Turbo Convertible 3.6L Turbo For Vehicles with Engine Code(s) 9605
2007 Porsche 911 GT3 Coupe 3.6L For Vehicles with Engine Code(s) 9605
2006 Porsche 911 Carrera 4S Convertible 3.8L For Vehicles with Engine Code(s) 9701
2006 Porsche 911 Carrera 4S Coupe 3.8L For Vehicles with Engine Code(s) 9701
2005 Porsche 911 Carrera Convertible 3.6L For Vehicles with Engine Code(s) 9605
2007 Porsche 911 Carrera 4S Coupe 3.8L For Vehicles with Engine Code(s) 9701

Ask a parts specialist

Asking about: Radiator Coolant Hose / Line (RETURN) 99710662503