Throttle Control Parts
Fits:
Porsche 911 1972-1977 with mechanical injection
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Diagram ref no 41
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111007300
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
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Fits:
Porsche 911 E / S / T-E - 1969 to 1973
911 2.7 Carrera MFI - 1974 to 1976
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Diagram ref no 36
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99901400702
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
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Fits:
Porsche 911 F model 1969-71 only for 911 E/S
Porsche 911 G model 1974-76 only for engine type 911/83
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Diagram ref no 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99920103500
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
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12 Month Warranty
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Fits:
Porsche 911 F (1972 - 1973)
Porsche 911 G (1974 - 1983)
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Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111006001
The product you are viewing cross references to these numbers
- 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
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12 Month Warranty
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Fits:
Porsche 911 T-K 1972-73
Porsche 911/911S 1974-75
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Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111091600
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
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12 Month Warranty
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The Porsche Throttle Return Spring is a genuine OEM component designed to ensure reliable throttle response and safe operation. Installed in the throttle linkage assembly, this spring provides the tension needed to return the throttle plate to the closed position whenever the accelerator is released.
Fits:
- 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
What This Product Does:
- The Throttle Return Spring provides the force that pulls the throttle (or control linkage) back to its idle / closed position when the accelerator is released.
- In a fuel injection or mixture control setup, such a spring keeps tension on the throttle and ensures the throttle plate or mixture valve returns reliably, preventing it from staying open or partially open.
- It helps maintain consistent throttle behavior, ensures smooth transitions off-throttle, and prevents unwanted throttle creep.
Symptoms Of A Worn / Broken Return Spring:
- The throttle may not return fully: the engine feels like it wants to hold higher RPM or won’t settle at idle.
- Delayed or sluggish engine deceleration when releasing the accelerator.
- Inconsistent or unstable idle, perhaps with the throttle slightly open.
- A “creep” effect — the engine seems to maintain higher revs when it should drop.
- Visible damage to the spring (stretched, corroded, weakened) or the spring detached from its linkage.
Why Replacement Matters:
- Ensures safe, predictable throttle behavior — a faulty return spring can lead to unsafe throttle response or lag in returning to idle.
- Prevents throttle slop or hang — keeping the linkage under correct tension improves drivability and control.
- Protects against accelerator-related faults — if the throttle doesn’t retract cleanly, it may stress other linkage parts or cause erratic engine behavior.
- It’s a relatively inexpensive part that can avoid more severe problems with the throttle / injection linkage over time.
Diagram Ref No 38
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111016502
The product you are viewing cross references to these numbers
- 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
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12 Month Warranty
Worldwide Delivery
High-Quality Throttle Control Parts for Smooth, Accurate & Responsive Engine Performance
Throttle control parts—such as throttle bodies, actuators, linkages and position sensors—play a critical role in managing airflow into the engine. By regulating how much air enters the intake system, these components directly influence acceleration, idle stability, fuel delivery and overall drivability. Modern electronic throttle systems rely on precise signals between the accelerator pedal, throttle body and engine management unit, while older mechanical systems depend on accurate linkage movement and tension.
Whether restoring performance, addressing drivability issues or upgrading intake responsiveness, high-quality throttle control components are essential for maintaining smooth, predictable engine behaviour.
What Throttle Control Parts Do
Throttle control parts ensure proper airflow and
communication within the engine’s intake and injection system by:
- Regulating
airflow into the engine based on driver input
- Maintaining
smooth acceleration through precise throttle plate movement
- Providing
accurate feedback via throttle position sensors
- Supporting
stable idle speed under varying load conditions
- Integrating
with the ECU for balanced fuel-air ratios
- Enhancing responsiveness, especially in performance-tuned engines
A correctly functioning throttle system allows the engine to deliver predictable power, quick throttle response and efficient combustion.
Why Throttle Control Systems Commonly Fail
Throttle components operate in a hot, contaminated
environment and are subject to mechanical and electrical stress. Failure can
occur for several reasons:
- Carbon
buildup on the throttle plate causing sticky or uneven movement
- Worn
throttle actuators leading to slow or inconsistent response
- Damaged
linkages or cables on mechanical systems
- Electrical
faults in electronic throttle modules or sensors
- Vacuum
leaks affecting airflow measurement and idle stability
- Moisture
intrusion, causing corrosion or connector failure
- General age-related wear reducing sensitivity or accuracy
Symptoms include erratic idle, reduced power, delayed throttle response, limp-home mode activation or engine hesitation.
Why You Should Replace Faulty Throttle Control Parts
Swapping failing components with precision-engineered alternatives designed to meet original performance standards provides significant reliability and drivability benefits.
Key advantages include:
- Restored throttle responsiveness and smooth acceleration
- More accurate airflow control and improved engine efficiency
- Prevention of idle instability and stalling
- Faster ECU communication for modern electronic throttle systems
- Reduced fuel consumption thanks to accurate air-fuel metering
- Better compatibility with performance upgrades and remaps
- Improved reliability for both modern and classic Porsche models
A refreshed throttle system ensures consistent performance and enhances driver confidence.
