Manual throttle valve lever. Porsche 911 1970-77 › 90142431701

Manual throttle valve lever
The Genuine Porsche Manual Throttle Valve Lever (Part Numbers: 90142431700 / 90142431701) is an original equipment throttle control component designed for classic Porsche 911 models. This connecting lever forms part of the manual hand throttle mechanism, allowing the driver to adjust the engine's idle speed using the hand throttle control located beside the handbrake. The lever connects the manual throttle control to the accelerator linkage, helping maintain an increased idle speed when required, particularly during cold engine starts and warm-up.

Fits:
Porsche 911 1970 - 1977
Porsche 911 (930) Turbo 1975 - 1977

Diagram ref no 20

Manufactured to Porsche's original specifications, this genuine replacement component provides precise fitment, reliable operation and factory-correct functionality, making it ideal for classic Porsche maintenance and restoration.

What Does This Part Do? – Functions

• Manual Throttle Control: Transfers movement from the hand throttle lever to the accelerator linkage.
• Idle Speed Adjustment: Allows the driver to manually increase engine idle speed.
• Cold Start Assistance: Helps maintain a higher idle during engine warm-up.
• Throttle Linkage Support: Ensures correct operation of the manual throttle mechanism.
• Original Fitment: Maintains factory-correct throttle control functionality.

Why Replace This Part?
Over time, the manual throttle valve lever can become worn, cracked or damaged due to ageing and repeated operation. A faulty lever may prevent the hand throttle from operating correctly, making it difficult to maintain an increased idle speed during cold starts.

Replacing a worn or broken lever with a genuine Porsche component helps restore proper manual throttle operation and preserve the original functionality of the classic Porsche throttle control system.

When to Replace This Part?

• Broken Lever: Cracked, snapped or damaged component.
• Throttle Malfunction: Hand throttle no longer increases engine idle speed.
• Excessive Play: Loose or worn connection within the throttle linkage.
• Cold Start Issues: Difficulty maintaining increased idle due to a faulty hand throttle mechanism.
• Restoration Work: During classic Porsche interior or throttle linkage restoration.

Where Does It Fit on the Car?
Location: Interior – centre tunnel, beside the handbrake lever.

The manual throttle valve lever is installed within the hand throttle control mechanism, positioned near the handbrake assembly between the front seats. It connects the driver's hand throttle control to the throttle linkage, allowing manual adjustment of the engine's idle speed.

Parts Diagram Reference: No. 20 (1970–1973 911 diagram).

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

90142431701

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