Synchronizing Hub With Locking Collar, 5th / Reverse Gear. Porsche 911 / 930 Turbo / 964 *G50 Transmission  ›  95030402105

Synchronizing Hub With Locking Collar, 5th / Reverse Gear
Genuine Porsche synchronising hub / guide sleeve with locking collar for 5th and reverse gear, designed for Porsche 911 and 964 models fitted with the applicable G50 5-speed manual transmission.

Fits:
Porsche 911 Carrera 3.2L 1978 - 1989   with G50/00, /01, /02  gearbox
Porsche 911 Turbo 3.3L (930) 1989 with G50/50  gearbox
 
Porsche 964 Carrera 2 3.6L 1990 - 1994 with G50/03, /04, /05  gearbox
Porsche 964 Carrera RS 3.6L / RS 3.8L  1992–1993    with G50/10 gearbox
Porsche 964 Turbo 3.3L / 3.6L  1991 - 1994 with G50/52 gearbox

 * Check fitment for your specific vehicle (model, year, engine) before ordering. Confirm the gearbox type as well: the supplied application notes specify a five-speed transmission and reverse gear, rather than every transmission fitted to these models.

Diagram ref no  41

This original Porsche gearbox component forms part of the transmission's 5th and reverse gear engagement mechanism. It works with the synchroniser and selector assembly to allow the appropriate gear to be selected and engaged.

Manufactured to the original Porsche specification, it is an essential replacement component when repairing worn gear engagement parts, rebuilding a G50 transmission or restoring the correct operation of the manual gearbox.

This component forms part of the internal gearbox gear-selection assembly.

What This Part Does / Functions

• Supports engagement of 5th and reverse gears
• Works with the gearbox synchroniser and selector mechanism
• Slides into the required position during gear selection
• Helps transmit the selector movement to the relevant gear engagement components
• Supports correct mechanical engagement of the selected gear
• Replaces a worn or damaged original operating sleeve
• Helps restore normal 5th and reverse gear selection when sleeve wear is the confirmed cause
• Maintains the factory Porsche G50 gearbox configuration.

Why Replace This Part?
The synchroniser guide sleeve is subjected to repeated mechanical loading whenever the corresponding gears are selected. Over time, the sleeve's engagement teeth and contact surfaces can become worn, chipped or damaged. Excessive wear may cause difficult gear engagement, resistance during shifting or problems maintaining proper engagement.

Replacing the damaged sleeve with a Genuine Porsche gearbox component helps restore the correct mechanical arrangement of the transmission.

Common Symptoms of a Worn Synchronising Hub / Guide Sleeve

• Difficulty selecting 5th gear
• Difficulty engaging reverse gear
• Gear selection feels rough or notchy
• Excessive resistance when selecting the affected gears
• Gear engagement becomes inconsistent
• Damaged or rounded engagement teeth
• Unusual mechanical noise during gear selection
• Worn sleeve discovered during gearbox disassembly
• Gear jumping out of engagement where internal wear is present

These symptoms may also result from worn synchroniser rings, selector forks, gear engagement teeth or gearbox adjustment faults.

A complete transmission inspection is recommended before replacing internal components.

When to Replace This Part

• During G50 gearbox rebuilding
• When 5th or reverse gear engagement components are worn
• If the locking collar or guide sleeve is chipped or damaged
• When repairing difficult gear selection
• During replacement of associated synchroniser components
• If excessive wear is discovered during gearbox disassembly.

Where It Fits on the Car
The guide sleeve is fitted inside the G50 manual gearbox, within the 5th and reverse gear selector and engagement assembly. It works alongside the relevant synchroniser components, selector fork and gear engagement mechanism. The gearbox must be dismantled to access and replace the sleeve.

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

95030402105

The product you are viewing cross references to these numbers