Gearshift Control Parts

Rennline 915 gear shift coupling bushings solid. 

Fits:
Porsche 356A / 356B / 356C - 1956 to 1965
Porsche 911 1969 to 1988
Porsche 911 turbo - 1975 to 1988

Product Description

If your 915 shift coupler has never been service or replaced and you're experiencing a loose and worn-out feel in your shifter, the culprit is likely the coupler. 

The factory-installed coupler bushings are constructed from low durometer compliant rubber, which tends to wear out quickly. Our upgraded brass bushing is designed to enhance shifter feedback and deliver precise shifts. It's the solution you've been seeking to optimize the performance of your 915 transmission.

Fits factory shift coupling - 91142402404 and 69542402404

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Diagram ref no 9

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TR18

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Rennline billet shift rod carrier and bushing. 

Fits:
Porsche 911 - 1965 to 1986
Porsche 911 turbo - 1975 to 1988
Porsche 914 (with tail-shift)

Porsche 914/6 - 1970 to 1972

Product Description

If you need help remembering the last time you changed this bushing, chances are it's time. Upgrade your shift bushing carrier while you’re at it, featuring a high-density Delrin bush.

Bracket -

• Stronger over the sheet metal OE one reducing flex and play.
• Tighter tolerance on the bushings to reduce play.
• Works with OE and aftermarket bushings
• Comes with TR16 upgraded bushing preinstalled.
• Easier to install bushings.
• Replaces factory part 93042403101 and 91442422400

Bushings -

• Delrin material for a more direct feeling.
• Extended bushing for more lateral control.
• Works on OE shifter support
• Easy to install
• Lubrication recommended

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Diagram ref no 21

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TR17

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RennShift performance shift rod support bracket Porsche 901/915/930 and 914 tail-shift transmissions

Fits:
Porsche 911 - 1965 to 1986
Porsche 911 turbo - 1975 to 1988
Porsche 914 (with tail-shift)

Porsche 914/6 - 1970 to 1972

Replacement/upgraded bracket that holds the shift rod bushing under the shifter

• Replaces factory part 930-424-031-01 and 914-424-224-00
• Includes new rod bushing installed
• Machined aluminum and black anodized
• Design grips bushings tighter than the factory part for a better fit to shift rod, yet large chamfer in bushing hole allows for easier replacement of the bushing.

Utilises factory bushing 914-424-224-00 (included)
Upgrade for '65-'69 911 (replaces early "narrow" shift bushing)

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Diagram ref no 21

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RODBRKT

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RennShift Performance Aluminium Shifter for 901/915 and 914 tail-shift transmissions. Knob not included. Also known as the RennSport Precision Shifter or RennSport Shifter or simply the RennShifter.

• Adjustable Throw, Adjustable Spring Gates, Bronze Bushings and much more!
• Fits 911 up to '86 with 901/911/915 transmissions.
• Fits 914 '70-'72 with tail-shift transmission including 914/6.
• Complete shifter makes installation simple.
• 20% and 33% throw reduction can be changed at any time.
• Works with factory shift knob or our optional shift knobs.
• Automatic and manual reverse lock-pawls included.
• Includes small RS boot. Can be used with original factory 915 boot.

Please Note: Shift knobs and the factory boot shown in pictures are optional extras.

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RSOR

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RennShift Performance Black Shifter for 901/915 and 914 tail-shift transmissions. Knob not included. Also known as the RennSport Precision Shifter or RennSport Shifter or simply the RennShifter.

• Adjustable Throw, Adjustable Spring Gates, Bronze Bushings and much more!
• Fits 911 up to '86 with 901/911/915 transmissions.
• Fits 914 '70-'72 with tail-shift transmission including 914/6.
• Complete shifter makes installation simple.
• 20% and 33% throw reduction can be changed at any time.
• Works with factory shift knob or our optional shift knobs.
• Automatic and manual reverse lock-pawls included.
• Includes small RS boot. Can be used with original factory 915 boot.

Please Note: Shift knobs and the factory boot shown in pictures are optional extras.

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RSOR

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RennShift Replacement upper stick, Aluminium.

This product is to be fitted with RennShift Performance Shifters.

• Fits 911 up to '86 with 901/911/915 transmissions.
• Fits 914 '70-'72 with tail-shift transmission including 914/6.
• Porsche 930 4-speed transmissions used in the '75-'88 911 Turbo.

RennShift Replacement upper stick, Black.

This product is to be fitted with RennShift Performance Shifters.

• Fits 911 up to '86 with 901/911/915 transmissions.
• Fits 914 '70-'72 with tail-shift transmission including 914/6.
• Porsche 930 4-speed transmissions used in the '75-'88 911 Turbo.

Sealing Sleeve.

Fits:
Porsche 911 1972-73 (Sportomatic Only)
Porsche 911 1974-86 (Not for G50 Gearbox cars)
Porsche 930 Turbo 1975-88 

Diagram Ref No. 32

Sealing sleeve
An OE Match sealing sleeve / shift rod boot designed to protect and seal the gearshift linkage within the transmission tunnel of classic Porsche 911 and 930 models.

Fits:
Porsche 911 - 1972 to 1973 (Sportomatic Only)
Porsche 911 - 1974 to 1986 (Not for G50 Gearbox cars)
Porsche 930 turbo - 1975 to 1988 

Diagram ref no. 32

This component plays a key role in both mechanical performance and cabin sealing. It allows smooth movement of the shift rod while protecting the linkage from dirt, moisture, and debris. At the same time, it seals the transmission tunnel, preventing noise, fumes, and heat from entering the cabin.

This OE Match replacement restores proper sealing and linkage protection, making it an essential part during gear linkage servicing, transmission work, or restoration of classic Porsche models.

This shift rod boot seals and protects the gear linkage, ensuring smooth operation while preventing contamination and cabin intrusion.

Function
• Seals transmission tunnel from cabin
• Protects shift rod and coupling from dirt and moisture
• Allows smooth articulation of gear linkage
• Reduces noise, heat, and fumes entering cabin
• Maintains proper gearshift feel and operation

Over time, the rubber boot deteriorates due to heat, age, and mechanical movement. A damaged boot can allow dirt and moisture into the linkage system, leading to increased wear and imprecise shifting. It can also allow noise and fumes into the cabin.

Replacing the boot ensures proper sealing, protects the linkage, and restores original driving comfort and shift quality.

When to replace
•  Boot is cracked, split, or hardened
•  Increased noise or fumes entering cabin
•  During gear linkage or coupler service
•  Poor or inconsistent gearshift feel
•  As part of restoration or preventative maintenance

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91142429200

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Sealing Sleeve.

Fits:
Porsche 911 1972-86 (Not for G50 Gearbox cars)
Porsche 930 Turbo 1975-88

Diagram Ref No. 33

Boot For Coupler Shift Linkage In Transmission Tunnel, Outer.

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.

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91142429400

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Shift coupler bushing, Black, 2 required.

Fits:

Porsche 356B T5 (from Trans#35001)
Porsche 356C
Porsche 911/912 up to 1986

Click 'Zoom in' for large parts diagram.

Fits to no 29 on diagram.

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69542422300

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Shift Coupler Bushing.

The OE MATCH Shift Coupler Bushing 69542422300/1 is an OE-style replacement gearshift linkage component designed for selected classic Porsche 356 B, 356 C, 911 and 912 models.
x2 Required Per Car.

Fits:

• Porsche 356B T5 (from Trans#35001)
• Porsche 356C
• Porsche 911 / 912 up to 1986

Fits To No 29 On Diagram

This essential bushing fits within the gearshift coupler assembly, helping maintain a secure and controlled connection between the gearshift linkage and the transmission selector mechanism.

Designed to replace worn or deteriorated original bushings, the OE MATCH Shift Coupler Bushing helps reduce excessive movement within the gearshift linkage, improving gear selection accuracy and restoring a more positive, precise shifting feel.

The shift coupler is an important part of the manual transmission linkage. It transfers the driver's gear lever movements through the shift rod towards the gearbox, allowing the correct gears to be selected.

The coupler bushings provide a supporting and locating interface within this connection, accommodating the intended movement while minimising unwanted looseness.

Over time, repeated gear changes, vibration, friction and ageing can cause the original bushings to wear, crack, deform or become excessively loose.

Worn shift coupler bushings are a common cause of vague gear selection, excessive gear lever play and difficulty engaging gears on older Porsche manual transmission models.

The OE MATCH replacement provides a practical solution for restoring the correct operation of the gearshift coupler without replacing the complete assembly when the surrounding components remain serviceable.

Ideal for routine transmission linkage maintenance, gearshift refurbishment and classic Porsche restoration projects, this component helps maintain the authentic mechanical shifting characteristics of the vehicle.

What This Product Does:
The shift coupler bushing provides a supporting interface within the gearshift coupling assembly, helping transmit gear lever movement accurately to the transmission selector linkage.

It helps keep the coupler's moving components correctly located while allowing the intended movement required during gear selection.

Its key functions include:

• Accurate Gear Selection: Helps transfer gear lever movement through the shift coupling with minimal unnecessary play.
• Gearshift Linkage Support: Supports the mechanical connection between the shift rod and gearbox selector linkage.
• Reduced Gear Lever Play: Helps minimise excessive side-to-side and fore-and-aft movement caused by worn coupler bushes.
• Improved Shift Precision: Contributes to a more defined and predictable gear selection feel.
• Correct Coupler Alignment: Helps maintain the intended position of the moving components within the gearshift coupler.
• Smooth Gear Changes: Allows controlled movement within the coupling during normal manual gear selection.
• Reduced Mechanical Rattling: Helps minimise unwanted movement and noise caused by excessive clearance.
• Reduced Metal-to-Metal Contact: Provides a bearing interface between associated coupling components.
• Transmission Linkage Integrity: Helps maintain the mechanical connection required for dependable gear selection.
• Original Gearshift Characteristics: Supports the factory-style shifting operation of classic Porsche manual transmissions.
• Restoration Compatibility: Provides an OE-style replacement for worn or damaged original coupler bushings.

Symptoms Of Wear Or Failure:
The shift coupler bushings are wear components that experience repeated movement and mechanical loading whenever the driver changes gear.

Over time, the original bushing material can deteriorate, resulting in additional clearance and reduced shifting precision.

Common symptoms include:

• Excessive Gear Lever Play: Noticeable side-to-side or fore-and-aft movement of the gear lever without a corresponding response from the transmission linkage.
• Loose or Sloppy Gear Changes: Gear selection feels vague or imprecise compared with normal operation.
• Difficulty Selecting Gears: Excessive coupler movement may make it harder to engage particular gears.
• Inconsistent Gear Selection: The gear lever may not move into the same position consistently when selecting a gear.
• Difficulty Finding First or Reverse: Worn linkage components may make certain gear positions harder to locate.
• Excessive Free Movement: The gear lever moves noticeably before the gearshift linkage begins to respond.
• Rattling from the Gearshift Linkage: Increased clearance may allow coupler components to vibrate or rattle.
• Notchy or Uneven Gear Selection: A damaged or distorted bushing may interfere with normal coupler movement.
• Worn or Enlarged Bushing Openings: The internal bearing surfaces may become elongated or distorted through use.
• Cracked or Split Bushings: Visible cracks can indicate material fatigue or age-related deterioration.
• Broken or Missing Bushing Material: Severe deterioration may leave the coupler pin inadequately supported.
• Reduced Shift Accuracy: Excessive play in the coupling can affect the driver's ability to locate the intended gear position.
• Gear Lever Vibration: Additional movement within the linkage may contribute to vibration transmitted to the gear lever.
• Difficulty Adjusting the Linkage: Excessive clearance may prevent the gearshift mechanism from maintaining a consistent adjustment.
• Visible Coupler Movement: Inspection may reveal excessive movement between the coupling pin and its surrounding bushings.

Why Replacement Matters:

• Replacing worn or damaged shift coupler bushings is an important part of restoring accurate gear selection, reducing excessive linkage movement and maintaining the original driving characteristics of your classic Porsche.
• The manual transmission gearshift mechanism relies on a series of mechanical connections to transfer movement from the gear lever to the gearbox.
• The shift coupler forms an essential connection in this system, allowing the movement of the gearshift rod to operate the transmission selector mechanism.
• The coupler bushings help maintain the correct relationship between these components.
• As the bushings wear, additional clearance develops within the coupling assembly. This can cause the movement of the gear lever to become less accurately transmitted to the gearbox.
• The driver may notice excessive lever movement, difficulty finding gears or a generally loose and imprecise shifting feel.
• Even a relatively small amount of wear within the coupler can become noticeable at the gear lever because movement is transferred through the complete shift linkage.
• Replacing worn bushings helps restore the intended coupling fit, reducing unnecessary movement and allowing the shift linkage to operate more consistently.
• Accurate gear selection is particularly important on classic Porsche manual transmissions, where the condition and adjustment of mechanical linkage components directly influence the driving experience.
• Excessive linkage play can make it more difficult to select the intended gear and may increase the risk of incomplete or incorrect gear engagement.
• Maintaining a correctly functioning coupler helps support smoother, more predictable shifting and reduces the likelihood of unnecessary stress caused by poor gear selection.
• Replacing deteriorated bushings can also help reduce vibration, rattling and mechanical noise caused by excessive clearance within the coupling.
• The shift coupler is generally a serviceable assembly, meaning worn bushings can often be replaced without renewing the complete coupling mechanism.
• This makes the OE MATCH replacement a practical maintenance option when the existing coupler housing, pin and surrounding hardware remain in good condition.
• For classic Porsche restoration projects, restoring the original gearshift operation is an important part of preserving the vehicle's authentic mechanical feel.
• When replacing the coupler bushings, inspecting the other gearshift bushes and linkage components provides an opportunity to address additional wear that may affect shift quality.
• Both shift coupler bushings should normally be replaced together to maintain consistent support and minimise uneven wear within the coupling assembly.
• The OE MATCH Shift Coupler Bushing 69542422300/1 provides an OE-style replacement solution designed to reduce unwanted gearshift play, restore precise linkage movement and maintain dependable manual transmission operation.

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69542422300

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Shift coupler clamp. An original design machined aluminium 911 coupler clamp allows one-handed tightening of the coupler.

For 901/911/915 911s up to 1986. Replaced the bent, distorted original.

Two wrenches are required to tighten the original clamp, requiring a third hand to move the shifter. 
Make this step much easier - with our clamp you can have one hand on the shift stick and the other on the wrench to tighten the coupler. 
Does not fit 914.


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JWST-CPLR-CLMP

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Shift lever buffer plate.

Fits:
Porsche 911 1973-1986

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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91142414700

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Shift lever buffer plate.

Fits:
Porsche 911 1973-1986

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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91142414700

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