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- 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 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The OE Match Outer Shift Coupler Boot is a replacement sealing sleeve for the gearshift linkage in the transmission tunnel of classic Porsche 911 and 930 Turbo models.
Fits:- Porsche 911 1972-86 (Not for G50 Gearbox cars)
- Porsche 930 Turbo 1975-88
Diagram Ref No 33
Fitted around the shift coupler area, the flexible boot helps seal and protect the linkage where the gearshift mechanism runs through the transmission tunnel. It helps keep dirt, moisture and road contamination away from the coupler while also closing the surrounding tunnel opening.
Although the boot does not directly select gears, protecting the linkage is important because the shift coupler and its bushes must move freely and accurately to transmit movement from the gear lever to the gearbox.
What This Product Does:
- Covers the shift coupler linkage within the transmission tunnel area.
- Helps protect the coupler from dirt, dust and road contamination.
- Helps reduce moisture reaching the linkage and coupler components.
- Seals the opening around the gearshift linkage.
- Helps keep the coupler bushes and moving parts cleaner.
- Reduces direct exposure of the linkage to environmental contamination.
- Supports long-term operation of the gearshift linkage.
- Replaces a cracked, split, hardened or missing original boot.
- Helps restore the original transmission-tunnel sealing arrangement during restoration.
The boot acts primarily as a protective sealing component. It does not correct worn coupler bushes or gearbox faults, but it helps protect those components from contamination.
Symptoms Of Wear Or Failure:
Because this is a flexible rubber sealing component, deterioration is usually visible rather than producing a specific mechanical fault.
Possible signs include:
- Cracks in the rubber.
- Splits or tears in the boot.
- Rubber becoming hard or brittle.
- Boot losing its original shape.
- Loose fit around the linkage.
- Sections of the boot becoming detached.
- Missing boot discovered during servicing.
- Dirt or road debris accumulating around the shift coupler.
- Moisture reaching the linkage area.
- Increased transmission-tunnel noise or draughts where the seal is badly damaged.
- Contamination visible around the coupler bushes.
- Rubber breaking apart when disturbed during maintenance.
If poor gear selection, excessive gear-lever play or vague shifting is present, the shift coupler bushes, linkage adjustment and gearbox components should also be checked, because the boot itself is not normally responsible for shift precision.
Why Replacement Matters:
The shift coupler is an exposed moving part of the gear-selection linkage. Keeping contamination away from the mechanism helps maintain cleaner operating conditions around the bushes, clamp and linkage joints.
A torn or missing outer boot can allow:
- Dirt to collect around the coupler.
- Moisture to reach linkage components.
- Increased contamination of the bushes.
- Greater exposure of metal parts to corrosion.
- Noise and air movement through the transmission tunnel opening.
- Accelerated deterioration of surrounding components over time.
Replacing a damaged boot restores the intended protective barrier around the coupler.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91142429400
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