Synchro ring 1st gear. Porsche 911 1974-86 (915 Gearbox)  ❭  91530230113

Synchro Ring 1st Gear.
The OE Match 1st Gear Synchro Ring is a high-quality replacement transmission component designed to facilitate smooth and precise engagement of first gear in Porsche manual gearboxes. Manufactured to OE specifications for fit, accuracy and durability, this synchroniser ring forms a critical part of the gearbox synchronisation system, helping to match gear and shaft speeds before engagement occurs.

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 39

Working alongside the synchroniser hub, dog teeth and selector sleeve, the synchro ring reduces speed differences between rotating gearbox components, allowing gears to engage smoothly without excessive noise, grinding or wear. Precision engineering ensures reliable operation and helps maintain the shift quality expected from a Porsche transmission.  

What This Product Does:

• Synchronises rotational speeds before first gear engagement.
• Helps ensure smooth and precise gear changes.
• Reduces gear clash and grinding during shifting.
• Works with the synchroniser assembly and dog teeth.
• Improves transmission shift quality and drivability.
• Minimises wear on gearbox engagement components.
• Supports reliable operation of the manual transmission.

Symptoms Of Wear Or Failure:

• Difficulty selecting first gear.
• Gear grinding or crunching during engagement.
• Increased resistance when shifting into first gear.
• Notchy or inconsistent gear changes.
• Requirement to force the gear lever into position.
• Excessive gearbox noise during shifting.
• Premature wear of dog teeth and related synchroniser components.
• Poor shift quality, particularly when the gearbox is cold.

Why Replacement Matters:

• Synchroniser rings are subjected to constant friction and wear every time a gear is selected. Over time, the friction surfaces can wear down, reducing their ability to equalise rotational speeds effectively before gear engagement. This can lead to difficult gear selection, increased transmission noise and accelerated wear of surrounding gearbox components.
• A worn synchro ring can place additional strain on dog teeth, selector sleeves and synchroniser hubs, potentially leading to more extensive and expensive gearbox repairs if left unresolved. Poor synchronisation can also diminish driving enjoyment and compromise the smooth operation of the transmission.
• Replacing a worn first gear synchro ring restores proper synchronisation, improves shift quality and helps protect the transmission from further internal wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring smooth and reliable gearbox performance for your Porsche.

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

91530230113

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