Gearbox Gears / Crown Wheel and Pinion


- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Note
Longer ring gear bolts may be required





- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 - 1972 to 1986
For 915 gearbox
Available with different gear ratios - example - 21:30 (number of teeth on each gear) - 1.43:1 (gear ratio)
21:30 - 1.43:1 (Porsche ref "LU")
20:31 - 1.55:1
20:32 - 1.60:1 (Porsche ref "KW")
19:31 - 1.63:1
19:32 - 1.68:1 (Porsche ref "JW")
19:33 - 1.74:1
18:32 - 1.78:1 (Porsche ref "HW")
18:33 - 1.83:1 (Porsche ref "HX")
18:34 - 1.89:1 (Porsche ref "HY")
15:29 - 1.93:1 (Porsche ref "ET")
15:30 - 2.00:1
17:35 - 2.06:1
16:35 - 2.19:1 (Porsche ref "FZ")
16.37 - 2.31:1
Diagram ref no 2
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 - 1972 to 1986
For 915 gearbox
Available with different gear ratios, example - 31:22 (number of teeth on each gear) - 0.59:1 (gear ratio)
31:22 - 0.71:1 ("TL" Porsche reference)
29:22 - 0.76 ("TM" Porsche reference)
28:22 - 0.79:1 ("SM" Porsche reference)
28:23 - 0.82:1 ("SN" Porsche reference)
28:24 - 0.86:1 ("SO" Porsche reference)
27:24 - 0.89:1 ("RO" Porsche reference)
27:25 - 0.93:1
26:25 - 0.96:1
26:26 - 1.00:1
25:26 - 1.04:1
25:27 - 1.08:1
24:27 - 1.13:1
24:28 - 1.16:1
23:27 - 1.17:1
23:28 - 1.22:1
23:29 - 1.26:1
21:27 - 1.29:1
22:29 - 1.32:1
21:29 - 1.38:1
21:30 - 1.43:1 ("LU" Porsche reference)
21:31 - 1.48:1
20:31 - 1.55:1
20:32 - 1.60:1 ("KW" Porsche reference)
20:33 - 1.65:1
22:37 - 1.68:1
Diagram ref no 3 and 4
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91530290474
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 - 1972 to 1986
For 915 gearbox
Available with different gear ratios - example - 9:38 (number of teeth on each gear) - 4.22:1 (gear ratio)
32:19 - 0.59:1
31:21 - 0.68:1
29:21 - 0.72:1
29:22 - 0.76:1
29:23 - 0.79:1
28:23 - 0.82:1
28:24 - 0.86:1
27:24 - 0.89:1
27:25 - 0.93:1
26:25 - 0.96:1
26:26 - 1.00:1
25:26 - 1.04:1
25:27 - 1.08:1
24:27 - 1.13:1
23:28 - 1.22:1
Diagram ref no 5
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 - 1972 to 1986
For 915 gearbox
Available with different gear ratios - example -17:34 (number of teeth on each gear) - 2.00:1 (gear ratio)
17:34 - 2.00:1
16:35 - 2.19:1
14:31 - 2.21:1
15:36 - 2.40:1
14:37 - 2.64:1
14:39 - 2.79:1
12:34 - 2.83:1
11:35 - 3.18:1
Diagram ref no 1
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91530292116
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 1970-77 4- and 5-speed Manual Transmission
Porsche 911 1978-86 5-Speed Manual Transmission
Click 'Zoom in' for large parts diagram.
Diagram ref no 6
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 - 1972 to 1986
Available with different gear ratios - example - 10:31 (number of teeth on each gear) - 3.10:1 (gear ratio)
10:31 - 3.10:1
8:31 - 3.875:1
8:35 - 4.375:1
7:31 - 4.43:1
Diagram ref no 6
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Fits:
Porsche 911 1972-86 with 915 Gearbox
Diagram ref no 9
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- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 1974 to 1977 with transmission code 915.06/43/65/66
Porsche 911 1978 to 1983; with transmission code 915.61/62
Porsche 911 1984 to 1986; with transmission code 915.64/69/72
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
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- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC

Fits:
Porsche 911 1974-80 Sportomatic (SPM)
Click 'Zoom in' for large parts diagram.
Diagram ref no 38
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 - 1969 to 1986
For 915 gearbox
Uprating or modifying your 915 gearbox? Choose from the gear ratios shown below
- High grade fine-grained 9310 VAR alloy steel material
- CNC-machined
- Formula One tooth profile
- Shot-peened
- REM-polished
Diagram ref no 5





- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 - 1969 to 1986
For 915 gearbox
Uprating or modifying your 915 gearbox? Choose from the gear ratios shown below
- High grade fine-grained 9310 VAR alloy steel material
- CNC-machined
- Formula One tooth profile
- Shot-peened
- REM-polished
Diagram ref no 3
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 - 1969 to 1986
For 915 gearbox
Uprating or modifying your 915 gearbox? Choose from the gear ratios shown below
- High grade fine-grained 9310 VAR alloy steel material
- CNC-machined
- Formula One tooth profile
- Shot-peened
- REM-polished
Diagram ref no 4
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 - 1969 to 1986
For 915 gearbox
Uprating or modifying your 915 gearbox? Choose from the gear ratios shown below
- High grade fine-grained 9310 VAR alloy steel material
- CNC-machined
- Formula One tooth profile
- Shot-peened
- REM-polished
Diagram ref no 5
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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L

Fits:
Porsche 911 - 1972 to 1986
For 915 gearbox
Uprating or modifying your 915 gearbox? Choose from the gear ratios shown below
- High grade fine-grained 9310 VAR alloy steel material
- CNC-machined
- Formula One tooth profile
- Shot-peened
- REM-polished
Diagram ref no 1
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