Exhaust lock nut, M8, 911 (75-89) + 911 Turbo (75-94) + 924/924 S/ Turbo/GT (76-88) +944 (82-87)

Our steel locknut size M8 and with an external diameter of 13 mm. is suitable for the following vehicles (quantities required per vehicle and mounting locations are given in the Notes after each specific vehicle model):  

Porsche 911 2.7 L (1975-1977)* (12)¹              

Porsche 911 S 2.7 L (1975-1977**)* (12)¹

Porsche 911 S 2.7 L (1975-1977**)* (USA-Canada-California-Japan) (18)²

Porsche 911 S Carrera 2.7 L (1975)* (USA-CAN) (18)²  

Porsche 911 S Carrera 2.7 L (1975)* (Version for California) (18)²

Porsche 911 Carrera 3.0 L (1976-1977)* (12)¹

Notes:

¹ To fasten the front exhaust muffler to the rear exhaust muffler: 3 

  To fasten the front exhaust muffler to the heat exchanger and to the crossover tube: 6

  To fasten the crossover tube to the heat exchanger: 3

² To fasten exhaust reactors to the cylinder heads: 12 

  To fasten heat exchangers to exhaust reactors: 6

* For the above vehicles, the M8 steel locknut reference 911.010472A can replace the copper M8 locknut reference 911.010472B in locations where galvanic corrosion is not a limiting factor.

** Models equipped with heat exchangers and thermal reactors

Porsche 911 Turbo 3.0 L Type 930 (1975-1977)* (29)³

Porsche 911 Turbo Carrera (USA-CAN) 3.0 L (1975-1977**)* (28)⁴

Notes:

³ To fasten the heat exhanger to the crossover tube: 3

  To fasten the crossover pipe’s short exhaust flange to the pipe going from the wastegate to the Turbocharger: 3

  To fasten the heat exchanger to the Turbocharger to wastegate pipe: 3

  To fasten the oil pump mount lock tabs: 4

  To fasten the wastegate to exhaust muffler pipe: 4

  To fasten the wastegate to the wastegate to Turbocharger pipe: 8

  To fasten the Turbocharger oil supply line to the Turbocharger: 2

  To fasten the Turbocharger oil scavenge line to the Turbocharger: 2

⁴ To fasten exhaust reactors to the cylinder heads: 12 

  To fasten the oil pump mount lock tabs: 4

  To fasten the wastegate to exhaust muffler pipe: 4

  To fasten the wastegate to the wastegate to Turbocharger pipe: 4

  To fasten the Turbocharger oil supply line to the Turbocharger: 2

  To fasten the Turbocharger oil scavenge line to the Turbocharger: 2

* For the above vehicles, the M8 steel locknut reference 911.010472A can replace the copper M8 locknut reference 911.010472B in locations where galvanic corrosion is not a limiting factor.

** Models equipped with heat exchangers and thermal reactors

Porsche 911 SC 3.0 L (1978-1983) (9)⁵

Porsche 911 SC 3.0 L Sportomatic (1978-1980) (9)⁵

Notes:

⁵ To fasten the front exhaust muffler to the rear exhaust muffler: 3 

  Fastening locknut for the Left and Right heat exchanger side flanges or ports: 6

Porsche 911 Carrera 3.2 L (1984-1989) (11)⁶

Porsche 911 Carrera 3.2 L Turbo-Look (1984) (11)⁶

Porsche 911 Carrera 3.2 L Speedster (1989) (11)⁶

Notes:

⁶ To fasten the front exhaust muffler to the rear exhaust muffler: 3 

  Fastening locknut for the Left and Right heat exchanger side flanges or ports: 6

Nut to fasten the vertical support brace for the A/C system compressor: 2

Porsche 911 Turbo 3.3 L Type 930 (1978-1989) (33)⁷

Notes:

⁷ Fastening locknut for the Left and Right heat exchanger side flanges or ports: 6

  Locknut to fasten the heat exchanger crossover pipe flange (or heat exchanger crossover pipe) to the wastegate crossover pipe (Turbocharger gas feed line): 3  

  Locknut to fasten the Left and Right-side heat exchangers to the engine cylinder heads: 12

Locknut to secure the two half-clamps for the heat exchanger crossover pipe flange: 2

  Locknut to secure the wastegate exhaust pipe to the wastegate: 4

  Locknut to secure the wastegate to the wastegate crossover pipe (Turbocharger gas feed line): 4

Nut to fasten the vertical support brace for the A/C system compressor: 2

Porsche 964 Turbo 3.3 L (1991-1992) (19)⁸                          

         Porsche 964 Turbo 3.6 L Type 965 (1993-1994) (19)⁸

Notes:

⁸   Locknut to fasten the hot air pipe for the rear right-side engine compartment  blower motor: 2

    Fastening locknut for the Left and Right heat exchanger side flanges or ports: 6

    Locknut to fasten the heat exchanger crossover pipe to the wastegate crossover pipe (Turbocharger gas feed line): 3

    Locknut to secure the wastegate to the wastegate crossover pipe (Turbocharger gas feed line): 4

    Locknut to fasten the wastegate to the catalytic converter on the right-side exhaust system: 4

Porsche 924 (1976-1985) (2)⁹

Porsche 924 Turbo (1979-1984) (14)¹⁰

Porsche 924 Carrera GT (1981) (14)¹⁰

Porsche 924 S (1986-1988) (6)¹¹

Notes:

⁹  Locknut for the U-shaped rear exhaust muffler support clip: 2

¹⁰  Locknut for the U-shaped wastegate support clip : 2

    Locknut for the U-shaped front exhaust muffler support clip: 2

    Locknut to fasten the wastegate to the Turbocharger exhaust gas pipe: 4

    Locknut to fasten the wastegate to the wastegate bypass line that is bolted to the engine exhaust manifold: 4

    Locknut for the U-shaped rear exhaust muffler support clip: 2

¹¹  Locknut to fasten the exhaust 2-in-1 header pipe to the exhaust manifold pipes: 6

Porsche 944 (1982-1985) (13)¹²

Porsche 944 (1985-1987) (8)¹³

Notes:

¹²