911 Porsche Throttle Body Kit, 41/36 CIS

Please contact us at sales@clewett.com for throttle body kit availability and lead times.

Clewett Engineering Individual Throttle Body Kit for 911 Porsche includes: 

• Throttle bodies (6) pre-assembled with couplings
• Throttle linkage assembly
• Air intake and filter assemblies
• Fuel rails with mounting brackets and hardware
• TPS (throttle position sensor) with mating connector kit and hardware.
• Gaskets and insulators and hardware for mounting throttles to engine.

Installation instructions are available here: ITB Instructions

Key features:

• Custom USA-designed and manufactured parts.
• Various throttle plate and intake port sizes to suit various engines with support for all typical air-cooled Porsche intake flanges.
• High quality throttle plate and shaft system that retains synchronization through vibration and temperature/heat cycles.
• Optimized velocity stacks (air horns/trumpets) and intake tracts with smooth transitions for best air flow and intake charge velocity.
• Custom air filters and covers/rain shields compatible with IAT (intake air temperature) sensors, IACV (idle air control valve) hoses, and crankcase vent routing to the intake tract.
• Progressive throttle linkage for a balance of engine response and low-speed drivability.
• Direct fitment for factory 911 throttle linkages and fitment with some modification to 964/993 cable throttles.
• Last but not least, the legendary flat-6 individual throttle sound and response!

Key points:

• Not compatible with A/C compressors!
  • With custom work they may be able to be made to fit certain compressors, but we do not officially support it at this time. We are working on design changes for A/C compatibility in the future, or we can order a set of PMO ITBs which are compatible.
• Product description shows throttle plate diameter and intake port diameter. For example, 46/41 = 46mm throttle plate, 41mm intake port, optimized for 3.2L Motronic intake ports.

Please don't hesitate to e-mail or call for assistance configuring a system for your application.

Please note, these are built to order to fit your application. Typically the build takes about 1-2 weeks if all components are in stock.

Certain options may also require a lead time for components to be available, and the lead time can depend -- we are happy to confirm lead times for you before you order.

Option selection: Please select injector type, vacuum ports (if required), air filter type and finish.

1. Compact or standard/long Bosch Style Fuel Injectors. Various fuel injectors are available (Sold separately): Injectors & mating connectors
2. Whether MAP (manifold absolute pressure) ports are needed for running a MAP Sensor. An optional MAP manifold is available: 1005-01
3. Idle Speed Control Ports  Yes / No (see our IACV kit option 1001-79, which also provides brake booster vacuum)
4. Linkage Type for throttle: Linkage is used for 911s (pre-1989), and cable is used for 964 and 993 models (1989-1998)
5. Flat Top or Rain Shield Air Filters
6. A fuel line kit to ease fuel plumbing into 911s is available here: 9312-61
7. A high quality fuel pressure regulator (FPR) is available: 9312-80
8. Color/finish options: Combinations of silver and black are available for the throttles and "trim" (other components).

Please provide engine size & year and the intake port size when ordering under special instructions. Note any engine modifications.

International orders must be shipped via FedEx or UPS