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Porsche > 911 & 912 (1965-1989) > Gearbox / Transmission > Gearbox Parts >

Gearbox Gears / Crown Wheel and Pinion

Gearbox Gears / Crown Wheel and Pinion

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DISPLAYING 1 to 16 (of 32 products)
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1st gear set for 930 4 speed gearbox. Porsche 911 turbo - 93030290106, 93030290105 - 27239, 27241, 38836, 32052, 33026, 33028, 33031
2
1st gear set for 930 4 speed gearbox. Porsche 911 turbo
93030290106
Product Information
Product Information
1st gear set for 930 4 speed gearbox. 

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



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Related, superseded, cross reference or alternative numbers for comparison.

93030290106
93030290106
93030290105

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1st gear set including reverse gear for 901 gearbox. Porsche 911 - 91130290300, 91130291100 - 36244, 36239, 26123, 16157, 36005, 16160, 36000, 27031, 16163, 35997
2
1st gear set including reverse gear for 901 gearbox. Porsche 911
91130290300
Product Information
Product Information
1st gear set including reverse gear for 901 gearbox

Fits:
Porsche 911 - 1965 to 1971
For 901 gearbox

Available with different gear ratios - example - 18:32 (number of teeth on each gear) - 1.78:1 (gear ratio)

18:32 - 1.78:1 (Porsche code "GA") 
18:34 - 1.89:1 (Porsche code "F") 
17:34 - 2.00:1  (Porsche code "E")   
16:35 - 2.19:1  (Porsche code "D")
13:29 - 2.23:1  (Porsche code "CA") 
15:36 - 2.40:1  (Porsche code "C")    
12:29 - 2.42:1  (Porsche code "C")    
14:37 - 2.64:1  (Porsche code "B")    
12:34 - 2.83:1  (Porsche code "AA")

Diagram ref no 1



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Related, superseded, cross reference or alternative numbers for comparison.

91130290300
91130290300
91130291100

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2mm crown wheel spacer. Porsche 915 transmission
1
2mm crown wheel spacer. Porsche 915 transmission
CMS.915.RGS
Product Information
Product Information
This 2mm spacer ring allows for a much easier setup when retrofitting some differentials and or crown wheel and pinions within the 915 family.

Note
Longer ring gear bolts may be required
2nd gear set for 901 gearbox. Porsche 911 - 91130290300, 91130290700, 91130290400, 91130291000, 91130291200, 91130291500, 91130291300, 90430293410 - 16165, 26129, 26126, 25702, 16166, 36014, 27034, 33756, 27033, 16167, 36236
4
2nd gear set for 901 gearbox. Porsche 911
91130290400
Product Information
Product Information
2nd gear set for 901 gearbox. 

Fits:
Porsche 911 - 1965 to 1971
For 901 gearbox

Available with different gear ratios - example - 20:31 (number of teeth on each gear) - 1.55:1 (gear ratio)

20:31 - 1.55:1 (Porsche code "I") 
20:32 - 1.60:1 (Porsche code "HA")   
19:31 - 1.63:1 (Porsche code "HB")  
19:32 - 1.68:1 (Porsche code "H")  
19:33 - 1.74:1  
17:30 - 1.77:1 (Porsche code "GB")  
18:32 - 1.78:1 (Porsche code "GA")  
18:33 - 1.83:1 (Porsche code "G")  
18:34 - 1.89:1 (Porsche code "F")  
17:34 - 2.00:1 (Porsche code "E") 
16:35 - 2.19:1 (Porsche code "D") 

Diagram ref no 2



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91130290400
91130290300
91130290700
91130290400
91130291000
91130291200
91130291500
91130291300
90430293410

The product you are viewing cross references to these numbers
2nd gear set for 915 gearbox. Porsche 911 - 91530290239 - 36099, 26148, 18108, 33681, 18110, 33680, 18112, 26143, 26216, 18113, 18114, 26142, 18115, 26201
4
2nd gear set for 915 gearbox. Porsche 911
91530290239
Product Information
Product Information
2nd gear set for 915 gearbox

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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91530290239
91530290239

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2nd gear set for 930 4 speed gearbox. Porsche 911 turbo - 93030290206, 93030290204, 93030290205, 93030290202 - 33812, 36222, 33811, 38840, 29113, 33810, 27242, 32474, 33809, 32475, 36254, 32476, 32477, 32478, 33168, 36257
2
2nd gear set for 930 4 speed gearbox. Porsche 911 turbo
93030290206
Product Information
Product Information
2nd gear set for 930 4 speed gearbox. 

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



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Related, superseded, cross reference or alternative numbers for comparison.

93030290206
93030290206
93030290204
93030290205
93030290202

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3rd and 4th gear set for 915 gearbox. Porsche 911 - 92330290438, 91530290474, 91530290440, 92330290323, 92330290428 - 36117, 36114, 36111, 36106, 36105, 36102, 26153, 26156, 28498, 18095, 18097, 18099, 26152, 18100, 28497, 18102, 33255, 18103, 28496, 18105, 18106, 18107, 18109, 26151, 18111
2
3rd and 4th gear set for 915 gearbox. Porsche 911
91530290474
Product Information
Product Information
3rd and 4th gear set for 915 gearbox - Can be used for 3rd and 4th gear

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



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91530290474
92330290438
91530290474
91530290440
92330290323
92330290428

The product you are viewing cross references to these numbers
3rd and 4th gear set for 930 4 speed gearbox. Porsche 911 turbo - 93030290302, 93030290304, 93030290403, 93030290401 - 34598, 27243, 33816, 32480, 33815, 33814, 16199, 16197, 16195, 33813, 16194, 32481, 27244, 27246, 16193, 32053, 16192, 27247, 36124, 36127, 27385
3
3rd and 4th gear set for 930 4 speed gearbox. Porsche 911 turbo
93030290304
Product Information
Product Information
3rd and 4th gear set for 930 4 speed gearbox - Can be used for 3rd and 4th gear


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



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Related, superseded, cross reference or alternative numbers for comparison.

93030290304
93030290302
93030290304
93030290403
93030290401

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3rd gear set for 901 gearbox. Porsche 911 - 90430291310, 90130290910 - 27411, 36230, 36227, 36020, 26135, 16137, 16139, 28494, 2849327035, 28492, 16147, 16148, 26132
2
3rd gear set for 901 gearbox. Porsche 911
90130290910
Product Information
Product Information
3rd gear set for 901 gearbox. 

Fits:
Porsche 911 - 1965 to 1971
For 901 gearbox

Available with different gear ratios - example - 25:26 (number of teeth on each gear) - 1.04:1 (gear ratio)

25:26 - 1.04:1   
24:27 - 1.13:1 (Porsche code "Q") 
23:27 - 1.17:1 (Porsche code "P") 
23:28 - 1.22:1 (Porsche code "O") 

23:29 - 1.26:1 (Porsche code "N")  
22:29 - 1.32:1 (Porsche code "M")  
22:30 - 1.36:1 (Porsche code "L") 
21:29 - 1.38:1 (Porsche code "LA")  
21:30 - 1.43:1 (Porsche code "K")  
21:31 - 1.48:1 (Porsche code "J") 
20:31 - 1.55:1 (Porsche code "I") 
20:32 - 1.60:1 (Porsche code "HA") 
19:31 - 1.63:1 (Porsche code "T") 
19:32 - 1.68:1 (Porsche code "H") 

Diagram ref no 3



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Related, superseded, cross reference or alternative numbers for comparison.

90130290910
90430291310
90130290910

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4th and 5th gear set for 901 gearbox. Porsche 911 - 90430292110, 90430292910, 90130291310, 90430292410, 90130291810, 90130291210, 90130291010, 90130291110, 90430291910, 90430293010, 91130290600 - 36024, 36015, 26140, 16122, 16123, 27036, 16125, 16126, 16127, 16128, 16129, 16131, 16133, 16134, 16136, 16138, 16140
2
4th and 5th gear set for 901 gearbox. Porsche 911
90130291310
Product Information
Product Information
4th and 5th gear set for 901 gearbox - Can be used for 4th and 5th gear

Fits:
Porsche 911 - 1965 to 1971
For 901 gearbox

Available with different gear ratios - example - 31:22 (number of teeth on each gear) - 0.71:1 (gear ratio)

31:22 - 0.71:1 (Porsche code "ZD") 
29:22 - 0.76:1 (Porsche code "ZA")  
29:23 - 0.79:1 (Porsche code "Z")  
28:23 - 0.82:1 (Porsche code "Y")  
28:24 - 0.86:1 (Porsche code "X")  
27:24 - 0.89:1 (Porsche code "W")  
27:25 - 0.93:1 (Porsche code "V")  
26:25 - 0.96:1 (Porsche code "U")  
26:26 - 1.00:1 (Porsche code "T")   
25:26 - 1.04:1 (Porsche code "S")   
25:27 - 1.08:1 (Porsche code "R")  
24:27 - 1.13:1 (Porsche code "Q")   
23:27 - 1.17:1 (Porsche code "P")  
23:28 - 1.22:1 (Porsche code "O")  
23:29 - 1.26:1 (Porsche code "N")   
22:29 - 1.32:1 (Porsche code "M")  
22:30 - 1.36:1 

Diagram ref no 4 and 5



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90130291310
90430292110
90430292910
90130291310
90430292410
90130291810
90130291210
90130291010
90130291110
90430291910
90430293010
91130290600

The product you are viewing cross references to these numbers
5th gear set for 915 gearbox. Porsche 911 - 91530290239, 92330290523, 92330290553, 91530290582, 92330290548 - 26161, 26160, 26159, 26164, 27853, 28502, 27037, 18092, 26158, 28501, 18094, 28500, 28499, 26157, 16171
4
5th gear set for 915 gearbox. Porsche 911
92330290553
Product Information
Product Information
5th gear set for 915 gearbox

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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92330290553
91530290239
92330290523
92330290553
91530290582
92330290548

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Mainshaft and 1st gear set for 915 gearbox. Porsche 911 - 91530292114, 91530292115, 91530292116, 91530291204, 91530291205 - 32605, 36251, 32521, 26166, 26165, 26141, 36029, 28503
2
Mainshaft and 1st gear set for 915 gearbox. Porsche 911
91530292116
Product Information
Product Information
Mainshaft and 1st gear set for 915 gearbox

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
91530292114
91530292115
91530292116
91530291204
91530291205

The product you are viewing cross references to these numbers
Mainshaft for 901 gearbox. Porsche 911 - 91130290400, 91130290700, 90430210100 - 16165, 26129, 26126, 25702, 16166, 36014, 27034, 33756, 27033, 16167, 36236
3
Mainshaft for 901 gearbox. Porsche 911
90430210100/1
Product Information
Product Information
Mainshaft  for 901 gearbox.

Fits:
Porsche 911 - 1965 to 1971
For 901 gearbox

Mainshaft only, no gears attached.

Diagram ref no 2



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Related, superseded, cross reference or alternative numbers for comparison.

90430210100
91130290400
91130290700
90430210100

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Reverse Gear Wheel Set. Porsche 911 1972-86 - 91530291205, 91530291204
4
Reverse Gear Wheel Set. Porsche 911 1972-86
Special Order item
91530291205
Product Information
Product Information
Gear wheel pair for reverse gear wheel

porsche

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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Related, superseded, cross reference or alternative numbers for comparison.

91530291205
91530291205
91530291204

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Ring gear and pinion shaft for 901 gearbox. Porsche 911 / 914 - 90130230101, 90130290102, 90130290200, 90130290201 - 07077, 37729, 37732, 11566, 37726
3
Ring gear and pinion shaft for 901 gearbox. Porsche 911 / 914
90130290102
Product Information
Product Information
Ring gear and pinion shaft for 901 gearbox

Fits:
Porsche 911 - 1965 to 1971
Porsche 914 - 1970 to 1976

Available with different gear ratios - example - 9:31 (number of teeth on each gear) - 3.44:1 (gear ratio)

9:31 - 3.44:1
8:31 - 3.88:1 
8:35 - 4.38:1  
7:31 - 4.43:1 
6:32 - 5.33:1 

Please note: 
This part is on special order terms and is made to order that could take 6-8+ weeks.
It is not a subject to cancellation or return if not required.

Diagram ref no 9



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90130290102
90130230101
90130290102
90130290200
90130290201

The product you are viewing cross references to these numbers
Ring gear and pinion shaft for 915 gearbox. Porsche 911 - 91530291116, 91530291117 - 06887, 06150, 07575, 06890
3
Ring gear and pinion shaft for 915 gearbox. Porsche 911
91530291116
Product Information
Product Information
Ring gear and pinion shaft set for 915 gearbox


Fits:
Porsche 911 - 1972 to 1986

Available with different gear ratios - example - 8:31 (number of teeth on each gear) - 3.875:1 (gear ratio)

8:31 - 3.875:1 
8:35 - 4.375:1 
7:31 - 4.43:1

Diagram ref no 6



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Related, superseded, cross reference or alternative numbers for comparison.

91530291116
91530291116
91530291117

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DISPLAYING 1 to 16 (of 32 products)
1 2
Also found on these pages
About Gearbox Gears / Crown Wheel and Pinion

Porsche Gearbox Gears, Crown Wheel & Pinion Shafts | Precision-Engineered Components for Power and Performance

Gearbox gears, crown wheels, and pinion shafts form the mechanical heart of your Porsche’s transmission and differential systems. These precision-cut components work together to transfer engine torque efficiently to the wheels, ensuring smooth gear changes, optimal traction, and refined performance.

At Design911, we supply high-quality gearbox gears, crown wheel and pinion shaft assemblies designed to meet or exceed original performance standards. Manufactured from case-hardened steel alloys and finished with precision machining, these components deliver exceptional strength, accuracy, and durability — essential for high-performance or classic Porsche applications.

Whether you’re rebuilding a manual gearbox, restoring a differential, or upgrading for motorsport use, our range ensures exact gear ratios, reduced noise, and long-lasting reliability.

What Do Gearbox Gears, Crown Wheel & Pinion Shafts Do?

These components are responsible for managing torque conversion, power delivery, and wheel rotation balance within the gearbox and differential.

Core Functions:

  • Gearbox Gears: Transmit power between shafts to control speed and torque output.
  • Crown Wheel & Pinion Shaft: Transfer torque from the gearbox to the differential, adjusting rotational direction and ratio. Maintain smooth power flow to the driven wheels. Support consistent acceleration and top-speed performance.

Together, they ensure seamless power distribution, responsive acceleration, and refined drivability across all Porsche models.

Why Do Gears, Crown Wheels & Pinion Shafts Fail or Wear Out?

Constant rotational stress, torque loads, and friction cause gradual wear and fatigue. Over time, even the strongest precision gears can lose performance if not properly maintained or lubricated.

Common Causes of Failure Include:

  • Excessive wear from low or contaminated gearbox oil.
  • Pitting, scoring, or chipped teeth from overload or poor lubrication.
  • Misalignment caused by worn bearings or damaged housings.
  • Heat distortion from aggressive driving or track use.
  • Incorrect installation or gear backlash setting errors.

When these components wear or fail, symptoms include whining or grinding noises, loss of smooth shifting, vibration, or inconsistent power delivery to the wheels.

Why Replace or Upgrade Your Porsche Gearbox Gears, Crown Wheel & Pinion Shaft?

Replacing worn or damaged gears, crown wheels, and pinion shafts restores drivetrain precision and ensures optimal torque transfer. Upgrading to performance-engineered components can also improve acceleration, gear engagement, and durability under high load.

Key Benefits:

  • Restores quiet, efficient gearbox and differential operation.
  • Eliminates whining, grinding, or gear backlash issues.
  • Improves power delivery and throttle response.
  • Reduces wear on associated bearings and shafts.
  • Designed for strength, accuracy, and long service life.
  • Available in standard and performance ratio options for Porsche models.

These components should always be replaced during gearbox or differential rebuilds to maintain correct gear alignment and long-term drivetrain reliability.

Highlights

  • Precision-cut Porsche gearbox gears, crown wheel & pinion shafts.
  • Manufactured from high-strength, case-hardened steel.
  • Balanced and finished for minimal noise and wear.
  • Suitable for Porsche 911, Cayman, Boxster, and classic models.
  • Direct-fit replacements for road, restoration, or performance builds.
  • Engineered for smooth, reliable torque transfer and control.       

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