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Home >> Porsche >> 2023 >> Cayenne Base, 4D Utility Coupe >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (1X Engine - General 4.0L -- 9YA - Cayenne (9YA)) >> WM, 1X00IN Technical Values (V8 Twin-Turbo) >> Service Information 19 - Engine - Cooling >> Cooling

Service Information 19 - Engine - Cooling: Cooling

WARNING: This page is about a different variant/trim than selected.
Fig 1: Front Coolant Pipe Components Location With Torque Specification
G15211960Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Front coolant pipe

1  Front coolant pipe
2  Screw > Tightening torque 9 Nm (6.5 ftlb.) 
Fig 2: Coolant Lines Components Location With Torque Specification - V8 Biturbo
G15211961Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant lines - V8 biturbo

1  Screw, M6 x 16 > Tightening torque 9 Nm (6.5 ftlb.) 
2  Screw, M6 x 20 > Tightening torque 9 Nm (6.5 ftlb.) 
3  Vent line
4  Additional coolant pump for heater
5  Additional coolant pump for turbocharger
6  Stud > Tightening torque 9 Nm (6.5 ftlb.) 
7  Control valve (engine control unit for transmission oil preheating)
8  Heat shield
9  Screw > Tightening torque 9 Nm (6.5 ftlb.) 

Additional radiator & coolant lines - V8 biturbo: 

Fig 3: Additional Radiator & Coolant Lines Components Location With Torque Specification - V8 Biturbo
G15211962Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Additional radiator & coolant lines - V8 biturbo

1  Additional radiator
2  Control valve (transmission control unit for transmission oil cooling)
3  Screw > Tightening torque 9 Nm (6.5 ftlb.) 
4  Screw > Tightening torque 9 Nm (6.5 ftlb.) 

Coolant pipe for coolant pump: 

Fig 4: Coolant Pipe At Coolant Regulator Housing Components Location With Torque Specification
G15211963Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Coolant pipe at coolant regulator housing

1  Coolant pipe
2  Screw, M6 x 16 > Tightening torque 8 Nm (6 ftlb.) 

Tightening torques for cooling system: 

Coolant line screws, M6 Stahl 8.8 > Tightening torque 9 Nm (6.5 ftlb.) 

Coolant reservoir screw, M6 > Tightening torque 9 Nm (6.5 ftlb.) 

Fig 5: Left Wheel Housing Coolant Pipe Components Location With Torque Specification
G15211964Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Left wheel housing coolant pipe

1  Coolant pipe
2  Screw > Tightening torque 9 Nm (6.5 ftlb.)