Jenvey Throttle Bodies
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Porsche 996 and 986 Boxster

Tapered Throttle Bodies with 45mm Butterflies
A kit for the early water cooled Porsche engine as used in the Boxster and 996.
Fits
Porsche 986 Boxster - 2.5ltr and 2.7ltr
Porsche 986 Boxster S
Porsche 996 3.4ltr
Porsche 996 3.6ltr
The base kit includes;
• Inlet manifolds x 2
• Jenvey SF 48mm taper throttle bodies with 45mm butterfles
• 90mm Long airhorns x 6
• Linkage kit, fuel rail and fuel rail mounts
Kit is Made to Order
Related reference numbers
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CKPE04-KIT
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Jenvey Throttle Bodies – Precision Airflow, Motorsport Response & Advanced Engine Tuning
Jenvey throttle bodies are renowned for delivering exceptional throttle response, increased airflow efficiency and refined drivability, making them a leading choice for Porsche engine rebuilds and performance conversions. Designed using motorsport engineering principles, Jenvey’s individual throttle body (ITB) systems improve cylinder-to-cylinder airflow balance, enhance mid-range torque and significantly boost high-RPM breathing.
Ideal for naturally aspirated performance builds, standalone ECU conversions and motorsport applications, Jenvey throttle bodies offer the accuracy, adjustability and build quality needed to achieve precise engine tuning and optimised performance.
What Jenvey Throttle Bodies Do
Jenvey ITB systems provide a range of performance benefits:
- Improve
throttle response by reducing intake volume and increasing airflow
velocity
- Deliver
balanced airflow to each cylinder for smoother, more consistent
combustion
- Enhance
high-RPM power through individual, unrestricted air passages
- Improve
drivability with ultra-precise throttle modulation
- Enable
advanced tuning with standalone engine management
- Support
performance camshafts and high-compression builds with increased
airflow capability
- Produce iconic induction sound, popular with motorsport and track-day enthusiasts
The result is a more responsive engine with sharper acceleration and cleaner power delivery.
Why Throttle Bodies Fail Over Time
Even high-quality throttle systems experience wear,
particularly in demanding environments such as track use, heat cycles and
extensive mileage. Common causes of throttle body failure include:
- Worn
throttle shafts or bearings, creating air leaks
- Carbon
buildup restricting plate movement
- Cracked
or distorted housings from heat cycling
- Vacuum
leaks due to degraded seals or misalignment
- Linkage
wear causing uneven throttle opening
- Contaminated
airflow, affecting tuning accuracy
- Electronic actuator faults (on drive-by-wire systems)
Failure symptoms often include: rough idle, hesitation, flat spots, uneven cylinder behaviour, or difficulty synchronising throttle banks.
Why You Should Replace or Upgrade to Jenvey Throttle Bodies
Upgrading to precision-engineered Jenvey throttle bodies,
designed to surpass original induction performance, delivers significant
benefits:
- Sharper and more immediate throttle response
- Increased airflow and improved volumetric efficiency
- More accurate and stable tuning control
- Improved peak power and torque gains
- Greater compatibility with custom cam profiles and standalone ECUs
- Enhanced reliability using motorsport-proven materials
- Reduced intake restriction and smoother airflow characteristics
For any rebuild or performance-focused Porsche engine, Jenvey ITBs provide a major improvement in responsiveness, tuning capability and overall performance.