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- Accessories
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Original Porsche Part Genuine Porsche part 91130230103
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Fits:
Porsche 914 All 1st-5th Gears
Porsche 911 1969-86 3rd, 4th, 5th (915 Trans.)
Porsche 912 >>1971
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130230113
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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
- Porsche 914 (1970-1976)
3 per gearbox. *please note these are 1/2 pieces so order 2 pcs to make one complete brake band.
Fits:
Porsche 911 1974-86 (915 Gearbox)
Diagram Ref no 8.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231608
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
3 per gearbox - sold each.

Fits:
Porsche 911 1974-86 (915 Gearbox)
Diagram Ref no 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231701
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
This synchroniser ring is a high-quality replacement for the original Porsche synchro ring, intended for the 4th / 5th gear engagement in manual transmissions. It restores crisp shifting performance and ensures smooth gear changes under load.
Sold each.
Fits:
Porsche 924 Turbo / GT 1979 - 1984
Diagram Ref no 10.
The synchroniser ring (synchro) helps match rotational speeds between the gear and the shaft before engagement, reducing gear clash and enabling smooth shifting. For 4th ↔ 5th gear, it is especially important because these are often used under high load or highway speeds. Precise tooth profile, surface finish, and friction surface design are essential to ensure positive engagement, durability, and minimal wear.
Over time, synchroniser rings are exposed to intense friction, heat, and load during every gear change. The original rings can wear, glaze, or lose their critical friction properties, leading to:
• Hard or grinding gear shifts
• Gear pop-outs under acceleration or deceleration
• Increased wear on gear teeth and shift sleeves
• Reduced driving comfort and gearbox longevity
Replacing worn components with a replacement Synchroniser Ring ensures proper tooth engagement, restores friction characteristics, and protects the entire transmission assembly from premature wear — keeping your Porsche shifting smoothly for years to come.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130230114
The product you are viewing cross references to these numbers
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981

Fits:
Porsche 924 Turbo / GT 1979-84
Click 'Zoom in' to see the diagram.
Diagram Ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130230114
The product you are viewing cross references to these numbers
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
Fits:
Porsche 911 1969-86 (915 Gearbox)
Click 'Zoom in' to see the diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130230113
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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
3 per gearbox

Fits:
Porsche 911 1974-86 (915 Gearbox)
Click "Zoom in" to see the diagram.
Diagram Ref no 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231701
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Sold each.

Fits:
Porsche 911 1965-71 (1. - 5th gear)
Porsche 911 1972-86 (3. - 5th gear)
Porsche 914 1970-76 (1. - 5th gear)
Porsche 924 1976-85 (4. - 5th gear)
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130231101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 914 (1970-1976)
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