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Gearbox Gears / Crown Wheel and Pinion
By OE Match
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 turbo - 1975 to 1989
For 930, 4 speed 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
20:32 - 1.60:1
19:34 - 1.79:1
19:33 - 1.74:1
16:36 - 2.25:1
18:33 - 1.83:1
20:33 - 1.65:1
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030290106
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 turbo - 1975 to 1989
For 930, 4 speed gearbox
Available with different gear ratios - example - 18:33 (number of teeth on each gear) - 1.83:1 (gear ratio)
18:33 - 1.83:1
19:34 - 1.79:1
19:33 - 1.74:1
20:34 - 1.70:1
20:33 - 1.65:1
20:32 - 1.60:1
17:26 - 1.53:1
18:26 - 1.44:1
18:25 - 1.39:1
23:31 - 1.35:1
23:30 - 1.30:1
24:30 - 1.25:1
24:29 - 1.21:1
25:28 - 1.12:1
26:28 - 1.08:1
26:27 - 1.04:1
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030290206
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 turbo - 1975 to 1989
For 930, 4 speed gearbox
Available with different gear ratios - example - 22:29 (number of teeth on each gear) - 1.32:1 (gear ratio)
22:29 - 1.32:1
24:30 - 1.25:1
24:29 - 1.21:1
25:29 - 1.16:1
26:30 - 1.15:1
25:28 - 1.12:1
26:28 - 1.08:1
26:27 - 1.04:1
26:26 - 1.00:1
27:26 - 0.96:1
28:26 - 0.93:1
28:25 - 0.89:1
29:25 - 0.86:1
29:24 - 0.83:1
29:23 - 0.79:1
30:23 - 0.77:1
30:22 - 0.73:1
31:22 - 0.71:1
32:21 - 0.66:1
32:20 - 0.63:1
32:19 - 0.59:1
Diagram ref no 3 and 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030290304
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 turbo - 1975 to 1989
For 930, 4 speed gearbox
Available with different gear ratios - example - 9:38 (number of teeth on each gear) - 4.22:1 (gear ratio)
9:38 - 4.22:1
8:37 - 4.63:1
8:40 - 5.00:1
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030291103
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Fits:
Porsche 911 - 1986 to 1989
Porsche 964 - 1989 to 1994
Available with different gear ratios - example - 10:31 (number of teeth on each gear) - 3.10:1 (gear ratio)
10:31 - 3.10:1
9:31 - 3.44:1
8:32 - 4.00:1
8.33 - 4.125:1
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95030291107
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 930 Turbo 3.0L 1975 - 1977
Porsche 930 Turbo 3.3L 1978 - 1989
Diagram ref no 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030245100
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The transmission pinion shaft collar nut secures the pinion shaft collar in the gearbox, preventing axial movement of the pinion shaft during operation. This helps maintain proper gear alignment, efficient power transfer, and prevents premature wear from shaft end-play. Correct torque and clamping force are essential for quiet and reliable transmission performance.
Fits:
Porsche 930 Turbo 3.0L 1975 - 1977
Porsche 930 Turbo 3.3L 1978 - 1989
Diagram ref no 53
Function: Installed on the threaded end of the pinion shaft within the transmission assembly, the collar nut holds the pinion shaft collar in place. Its design ensures stable axial positioning of the pinion gear relative to bearings and mating gear sets, supporting smooth rotation and precise gear engagement throughout varying load conditions.
Transmission fasteners such as the pinion shaft collar nut play a critical role in maintaining correct gear position and load distribution within the gearbox. A worn, damaged, or incorrect nut can result in improper clamping force, leading to pinion shaft movement, gear misalignment, noise, or accelerated wear of bearings and gear teeth. Replacing it with an OE Match nut helps ensure stable transmission performance and long-term durability.
When to replace:
• During transmission rebuilds or major service
• If the original nut is damaged, rounded, or corroded
• After transmission disassembly
• When correct clamping torque cannot be achieved
• As a precaution on high-mileage gearboxes
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030245300
The product you are viewing cross references to these numbers
-
gear wheel sets 4. speed transmission - G 930/34 - 911 1978-83 303-00
-
gears and shafts 4. speed transmission - G 930/34 - 911 1978-83 303-05
-
gear wheel sets 4-speed 911 1987-89 303-00
-
gears and shafts 4-speed gear wheel sets see group 3/03/00 303-05
-
gear wheel sets /50 5-speed 911 1987-89 303-10
-
differential 911 1987-89 305-00
-
gear wheel sets 4-speed 911 1984-86 303-00
-
gears and shafts 4-speed 911 1984-86 303-05
-
Differential 911 1984-86 305-00
OEMatch Gearbox Gears, Crown Wheel & Pinion — Engagement, Smoothness, Control
OEMatch supplies gearbox gears, crown wheel and pinion for Porsche models. These precision-cut components are offered as direct-fit replacements engineered to match original-spec dimensions and tolerances, providing a practical option when genuine parts are unavailable. They are suitable for restoration, gearbox rebuilds and upgraded applications where attention to ratio and durability is required.
Available Types- Standard-ratio gearbox gears for road use
- Performance-ratio gears for modified engines and track use
- Crown wheel and pinion sets for differential rebuilds
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original gearbox gears and crown wheel & pinion.
OE (Original Equipment) refers to parts matching original specifications for the gearbox gears and crown wheel & pinion and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM gearbox gears and crown wheel & pinion engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
These components are typically cut from case-hardened steel, finished with precision machining and balanced to control noise and wear. Correct tooth form, surface treatment and hardness are key to long service life and smooth torque transfer, and selection should reflect the vehicle’s intended use.
- Restores quiet, efficient gearbox and differential operation
- Reduces gear noise and backlash when fitted correctly
- Improves torque delivery and throttle response in rebuilt gearboxes
- Contaminated or degraded gearbox oil leading to accelerated wear
- Pitting and scoring from overload or insufficient lubrication
- Misalignment caused by worn bearings or damaged housings
- Heat distortion from sustained high-load or track use
- Incorrect installation or backlash setting errors
Replacing worn or damaged gearbox gears, crown wheels and pinions restores drivetrain precision and helps maintain consistent power delivery in Porsche models. Fitted parts correct gear engagement, reduce stress on bearings and shafts and support long-term reliability after a rebuild. OEMatch items are selected to align with Porsche specifications and to assist technicians and restorers in matching ratios and installation requirements.
Advantages- Available in standard and performance ratio options for restoration or upgrade projects
- Manufactured and finished to control noise and minimise wear
- Supplied with information to support correct installation and setup
Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified. If you are unsure about setup, bearing condition or backlash settings, consult a specialist with Porsche experience.