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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
The OE Match Synchro Shifting Sleeve, 1st/2nd Gear is a high-quality replacement transmission component designed to facilitate the engagement of first and second gears within Porsche manual gearboxes. Manufactured to OE specifications for fit, precision and durability, this shifting sleeve forms a critical part of the synchroniser assembly, ensuring smooth, accurate and reliable gear selection.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
Diagram Ref No 42
Working in conjunction with the synchroniser hub, synchro rings and dog teeth, the shifting sleeve slides across the synchroniser assembly to engage the selected gear once rotational speeds have been synchronised. Precision machining and correct fitment are essential for maintaining shift quality, reducing gearbox wear and ensuring dependable transmission performance.
What This Product Does:
- Engages first and second gears within the gearbox.
- Works with the synchroniser assembly to enable smooth gear changes
- Transfers movement from the gear selector mechanism to the selected gear.
- Helps ensure accurate and positive gear engagement.
- Supports proper synchronisation before gear selection.
- Reduces gear clash and transmission wear.
- Contributes to smooth manual gearbox operation and drivability.
Symptoms Of Wear Or Failure:
- Difficulty engaging first or second gear.
- Gear grinding or crunching during shifts.
- Notchy or inconsistent gear changes.
- Excessive resistance when moving the gear lever.
- Gear disengagement or jumping out of gear under load.
- Poor shift quality and reduced transmission precision.
- Increased gearbox noise during gear changes.
- Visible wear, chipping or rounding of engagement surfaces during inspection.
Why Replacement Matters:
- The synchro shifting sleeve experiences repeated mechanical loading every time first or second gear is selected. Over time, the engagement surfaces can wear, become rounded or suffer damage, reducing the sleeve's ability to engage gears cleanly and securely.
- A worn shifting sleeve can compromise gear engagement, place additional strain on synchroniser rings and dog teeth, and accelerate wear throughout the gearbox. If left unresolved, continued operation may lead to increasingly poor shift quality and more extensive transmission repairs.
- Replacing a worn synchro shifting sleeve restores accurate gear engagement, improves transmission performance and helps protect other synchroniser components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring smooth and reliable shifting performance for your Porsche manual transmission.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93030241103
The product you are viewing cross references to these numbers
- 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
The Porsche replacement product code 91530222709 is a precision-engineered component integral to the 915 manual transmission system found in Porsche 911 models from 1972 to 1986
This part is a shift sleeve, also known as a synchromesh sleeve or slider, specifically designed for the 5th gear and reverse gear operations in the 915 gearboxes. The shift sleeve facilitates the engagement and disengagement of gears by sliding along the main shaft to align with the corresponding gear teeth. It plays a crucial role in ensuring smooth and precise gear shifts, particularly when selecting 5th gear or reversing.
Typically crafted from high-strength steel alloys, the shift sleeve is designed to withstand the stresses and forces encountered during gear changes.
Fits:Porsche 911 72-86 915 Gearbox
Manual transmission
Over time and with extensive use, the shift sleeve can experience wear and degradation, leading to various transmission-related issues:
- Difficulty Engaging 5th Gear or Reverse: Excessive wear on the shift sleeve's teeth or detents can result in challenges when attempting to engage 5th gear or reverse, often requiring additional effort or multiple attempts.
- Grinding Noises: Worn or damaged shift sleeves may fail to fully engage the gear, causing grinding noises during gear selection.
- Slipping Gears: Improper engagement due to a faulty shift sleeve can lead to gears slipping out of engagement, posing safety risks and potential damage to the transmission.
- Inconsistent Shifting Feel: A degraded shift sleeve can result in an inconsistent or "notchy" shifting experience, detracting from the smooth operation expected in Porsche vehicles.
OE Match produces products to the Original Equipment Manufacturer (OEM) standard parts, ensures the replacement component meets a stringent quality standard and guarantees proper fitment.
Professional Installation: Given the complexity of transmission systems, it's advisable to have the shift sleeve replaced by a qualified technician to ensure correct installation and to avoid potential damage to the transmission.
Inspection of Related Components: During replacement, it's prudent to inspect related components, such as the synchro rings and gear teeth, for wear or damage to prevent recurring issues.
Diagram ref no 57
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91530222709
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
This OE Match gearshift sleeve is a replacement transmission synchroniser sleeve for 3rd and 4th gear on Porsche 911 models from 1966 to 1977. It is designed to match the original-style fit and function, helping restore smooth and accurate gear engagement.
Sold individually
Fits:
Porsche 911 1966-71 901 gearbox
Porsche 911 1972-77 915 gearbox
for Narrow Guide Sleeve
Diagram ref no 13
The gearshift sleeve forms part of the gearbox synchroniser assembly. During gear changes, it moves to engage the selected gear, working with the synchro hub, synchro rings, and dog teeth to help the gearbox shift cleanly between 3rd and 4th gear.
Functions
• Replaces the 3rd–4th gear synchroniser / gearshift sleeve
• Helps engage 3rd and 4th gears correctly
• Supports smooth and accurate gear changes
• Works with the synchro hub, synchro rings, and dog teeth
• Helps reduce gear selection issues when replacing worn components
• Suitable for gearbox rebuilds and transmission repair
• OE Match replacement for classic Porsche gearbox service.
Why Replace This Part?
Gearshift sleeves can wear due to repeated gear changes, high mileage, poor lubrication, worn synchro components, or gearbox abuse. A worn or damaged sleeve may cause difficult gear selection, crunching, baulking, jumping out of gear, or poor shift feel. Replacing the sleeve during gearbox overhaul helps restore correct synchroniser operation and reliable gear engagement.
When to Replace
• This Part 3rd or 4th gear is difficult to select
• Gear changes feel notchy, rough, or inconsistent
• Crunching or baulking occurs during 3rd–4th gear shifts
• The gearbox jumps out of gear
• The sleeve teeth are worn, chipped, rounded, or damaged
• The synchro rings, hubs, or dog teeth are being replaced
• The gearbox is being rebuilt or inspected.
Where it fits on the car
This gearshift sleeve fits inside the gearbox synchroniser assembly for 3rd and 4th gear. It is part of the internal transmission gear selection system and should be installed according to the factory gearbox layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130241110
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 914 (1970-1976)
Fits:
Porsche 911 65-71 (901 Gearbox)
Porsche 914 / 914-6 1970-76
Click 'Zoom in' for large parts diagram.
Diagram ref no 42
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91130222602
The product you are viewing cross references to these numbers