Throttle Body / Plenum Chamber

PMO EFI Throttle Body Kit – Black Anodized “R” Finish – 40mm / 46mm / 50mm

Upgrade your classic air-cooled Porsche to modern electronic fuel injection with the PMO EFI Throttle Body Kit, available in 40mm, 46mm and 50mm sizes with the distinctive Black Anodized “R” finish.

Fits

• 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
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97
• Porsche 914-6 (1970-1976)

Designed for air-cooled six-cylinder Porsche engines from 1965 to 1998, PMO individual throttle bodies combine the classic appearance and response of traditional carburettors with the accurate fuel control and tuning possibilities of modern EFI.

The Black Anodized “R” finish gives the throttle bodies a purposeful vintage competition appearance, making them particularly suited to performance, restomod and motorsport-inspired Porsche engine builds.

Inlet Manifolds, Fuel Injectors and Throttle Position Sensor (TPS) are Not Included

Please note that inlet manifolds, fuel injectors and the TPS shown in product imagery are for reference and are not included with the kit.

What Does the PMO EFI Throttle Body Kit Do?

PMO individual throttle bodies replace carburettors or the existing induction system as part of a complete electronic fuel injection conversion.

Each cylinder receives its own throttle bore, providing direct and responsive airflow. Fuel is delivered through individual injectors controlled by a compatible programmable ECU.

When correctly installed and tuned, benefits can include:

• Sharper throttle response
• Precise electronic fuel control
• Improved engine tuneability
• Better cold starting and driveability
• Accurate control of air/fuel ratios
• Potential improvements in performance and fuel efficiency
• Individual throttle response for each cylinder
• Classic competition appearance with modern EFI technology

40mm, 46mm or 50mm – Which Size?

PMO offers three throttle body sizes to suit different air-cooled Porsche engine specifications.

• 40mm – Ideal for smaller-capacity and road-focused engines where good air velocity, throttle response and low-to-mid-range performance are important.
• 46mm – Suitable for larger-capacity, fast-road and modified engines requiring increased airflow while maintaining excellent throttle response.
• 50mm – Designed for highly modified, large-capacity and competition engines where maximum airflow and high-RPM performance are required.

Correct sizing depends on engine capacity, cylinder heads, camshafts, compression ratio, intended RPM range and power requirements. Consult your engine builder when selecting the appropriate size.

Precision PMO Construction

PMO EFI throttle bodies are precision CNC machined and hand assembled in Anaheim, California using aerospace-grade materials.

Sealed ball bearings provide durability, while the one-piece throttle shaft maintains accurate alignment for smooth and consistent throttle operation.

Tapered 52mm intake throats improve airflow into the throttle bodies, while billet fuel rails accommodate Bosch-style fuel injectors.

EFI Management Compatibility

PMO EFI throttle bodies can be used with programmable engine management systems including Haltech, MegaSquirt, MoTeC and other suitable aftermarket EFI controllers.

The ECU must be correctly configured and tuned for the individual engine specification.

Injector size, fuel pressure, sensors and ECU configuration should be discussed with your engine builder or EFI system supplier before installation.

Converting from Carburettors to EFI

A carburettor-to-EFI conversion requires a suitable high-pressure fuel system in addition to the throttle bodies.

A fuel pump capable of approximately 60 psi is required. The Walbro GSL393 external universal inline fuel pump, rated at approximately 160 LPH, is one suitable option. Another correctly specified 60 psi EFI fuel pump can also be used.

Fuel lines, filters, pressure regulation and associated components must be suitable for EFI operating pressures.

• Fuel rail retaining/injector clip – 534-102
• TPS sensor – 17123852
• Bosch-style fuel injectors
• Suitable high-pressure EFI fuel pump
• Compatible programmable ECU

Fuel injector specification should be selected according to engine capacity, expected power output, fuel type and EFI system requirements.

PMO Black Anodized “R” EFI Throttle Bodies for Air-Cooled Porsche

PMO individual throttle bodies provide an excellent solution for Porsche owners wanting the immediate response and appearance of classic individual induction combined with modern electronic fuel injection.

Available in 40mm, 46mm and 50mm sizes, the system can be matched to road, fast-road, restomod and competition air-cooled Porsche flat-six engines.

The Black Anodized “R” finish provides a distinctive period motorsport appearance, making these throttle bodies particularly suited to classic Porsche 911 performance builds where engine-bay appearance is as important as performance.

PMO EFI Throttle Body Kit – Natural Aluminium Finish – 40mm / 46mm / 50mm

Upgrade your classic air-cooled Porsche to modern electronic fuel injection with the PMO EFI Throttle Body Kit, available with 40mm, 46mm or 50mm throttle bodies in a natural aluminium finish.

Fits

• 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
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97
• Porsche 914-6 (1970-1976)

Designed for air-cooled six-cylinder Porsche engines from 1965 to 1998, PMO individual throttle bodies combine the classic appearance and response of traditional carburettors with the accurate fuel control and tuning possibilities of modern EFI.

Whether building a responsive road engine, fast-road Porsche or high-performance competition engine, the choice of three throttle body sizes allows the induction system to be matched more closely to your engine specification.

Inlet Manifolds, Fuel Injectors and Throttle Position Sensor (TPS) are Not Included

Please note that inlet manifolds, fuel injectors and the TPS shown in product imagery are for reference and are not included with the kit.

What Does the PMO EFI Throttle Body Kit Do?

PMO individual throttle bodies replace carburettors or the existing induction system as part of an electronic fuel injection conversion.

Each cylinder receives its own throttle bore, providing direct airflow into the engine. Fuel delivery is then electronically controlled through individual injectors and a compatible aftermarket ECU.

When correctly installed and tuned, benefits can include:

• Sharper throttle response
• Precise electronic fuel control
• Improved engine tuneability
• Improved cold starting and driveability
• Better control of air/fuel ratios
• Potential improvements in performance and fuel efficiency
• Individual throttle response for each cylinder
• Classic carburettor-style appearance with modern EFI control

40mm, 46mm or 50mm – Which Size?

PMO EFI throttle bodies are available in three bore sizes to suit different engine specifications.

• 40mm – Well suited to smaller-capacity and road-focused engines where air velocity, low-to-mid-range response and driveability are important.
• 46mm – A good choice for larger-capacity, modified and fast-road engines requiring increased airflow while retaining strong throttle response.
• 50mm – Designed for highly modified, large-capacity and competition engines where maximum airflow and high-RPM performance are priorities.

Correct sizing depends on engine capacity, cylinder heads, camshafts, compression ratio, intended RPM range and power requirements. Consult your engine builder when selecting the appropriate size.

Precision PMO Construction

PMO EFI throttle bodies are precision CNC machined and hand assembled in Anaheim, California using high-quality aerospace-grade materials.

Sealed ball bearings provide durability, while the one-piece throttle shaft maintains accurate alignment and helps provide smooth, consistent throttle operation.

Tapered 52mm intake throats improve airflow into the throttle bodies, while billet fuel rails accommodate Bosch-style fuel injectors.

EFI Management Compatibility

PMO EFI throttle bodies can be used with programmable engine management systems including Haltech, MegaSquirt, MoTeC and other suitable aftermarket EFI controllers.

The ECU must be correctly configured and professionally tuned for the individual engine specification.

Injector size, fuel pressure, sensors and ECU configuration should be discussed with your engine builder or EFI system supplier before installation.

Converting from Carburettors to EFI

Converting a carburetted Porsche engine to EFI requires a suitable high-pressure fuel system in addition to the throttle bodies.

A fuel pump capable of approximately 60 psi is required. The Walbro GSL393 external inline fuel pump, rated at approximately 160 LPH, is one suitable option, although another correctly specified 60 psi universal EFI fuel pump may also be used.

Fuel lines, filtration, pressure regulation and other associated components must also be suitable for EFI operating pressures.

Associated components to added include:

• Fuel rail retaining/injector clip – 534-102
• TPS sensor – 17123852
• Bosch-style fuel injectors
• Suitable high-pressure EFI fuel pump
• Compatible programmable ECU

Injector specification should be selected according to engine capacity, expected power output, fuel type and EFI system requirements.

PMO EFI Throttle Body Kits for Air-Cooled Porsche

PMO individual throttle bodies provide an ideal solution for owners wanting the appearance and immediate response associated with classic carburettor induction while gaining the control and tuning potential of electronic fuel injection.

Available in 40mm, 46mm and 50mm sizes, PMO EFI throttle bodies can be matched to a wide variety of standard, modified and competition air-cooled Porsche flat-six engines.

The natural aluminium finish provides a clean, period-inspired appearance that complements classic Porsche engine bays while concealing modern EFI technology within a traditional individual-throttle-body layout.

Sizes Porsche 911 intake manifolds
Carburetor/Bosch MFI Ø32mm engine side - Ø40mm ITB side. Recommended for early 2.0ltr / 2.2ltr engines

Injectors options that can be used - 260cc / 300cc / 380cc / 420cc / 480cc / 520cc

This is a direct replacement kit for replacing carburetors while keeping the OEM look in your engine bay. 

The intake manifolds and riser plates are manufactured out of a single piece of 6082 aluminum and come in 2 styles. These differ in design due to the shape of the mounting flange for the cylinder head. The intake manifold can be used as replacement parts for the OEM part when damaged or has to be replaced*.
The ITBs are manufactured out of cast aluminum, whist the fuel rails are made out of aluminum 6060 extrusion profile and come with AN6 ORB connection for the fuel lines. The direct mount fuel pressure regulator is directly mounted to the fuel rails, so in this case you don’t need to drill additional holes in the engine bay for mounting a fuel pressure regulator.
The throttle linkage and all mounting hardware is made from stainless steel and the pivoting point of the throttle linkage is a ball and socket design for smooth operation. The levers allow you to adjust and finetune mechanical movement of the ITBs

The dimensions of the assembly are the same as the OEM carburetor setup and the riser plate comes with same mounting holes as the OEM carburetors, in this way you are able to use the OEM air filter box and OEM airhorns. Also the riser plates come with mounting options for an air intake temperature sensor, this is nicely hidden away between the ITBs. The diameter for the ITBs in the riser plate is 45mm. There is also an option for using airhorns, In this case you don’t need the riser plates.

The crank sensor and trigger wheel kit are additional and this type of kit is needed when using ITBs like these. Besides switching to ITBs you will need a stand alone ECU to get the fuel injection to work. Our kit only works with engines like the 3.0ltr that came with a “ big distributor”. You can leave the distributor or you can remove this unit when you are going to use a discoil type of ignition. In for case an adapter is included in the crank sensor kit. The pulley comes in 2 dimensions to choose from, a Ø116mm pulley and Ø126,5mm pulley.

Fuel injectors, fuel lines, standalone ECU, wiring harness are NOT included in the kit.

*In case of using as a replacement part 3 mounting holes for the carburetors or ITBs need to be re thread with a timesert or helicoil. Otherwise it is impossible to mount a threaded stud.

Kit Includes
2 x Full billet, hard anodised intake manifolds
6 x ITB complete with lever assembly
6 x Airhorns 45mmØx30mm
2 x Fuel rail with mounting hardware
1 x Throttle linkage with 2 throttle connection rods
1 x Direct mount fuel pressure regulator
2 x Riser plates with 1 air temperature sensor (for use with OEM air filter box)
1 x Crank sensor and trigger wheel kit (optional)
All needed gaskets and mounting hardware.

Enhance the engine compartment of your Classic Porsche with a high-quality reproduction of a long-discontinued Porsche part.
Designed using SolidWorks CAD and precisely molded for a perfect fit with a period correct look
HDPE construction with reinforced mounting tabs

These velocity stacks will fit the following applications:
3 barrel Weber and Zenith Carburetors
Porsche Mechanical Fuel Injection Throttle Bodies

Will not fit PMO Induction Carburetors or EFI Systems

Measures 2” Tall with a 38mm Bore

Sold Individually, Order (6) and Make Your Engine Look Like New

Click 'Zoom in' for large parts diagram.
Diagram ref no 30

Enhance the engine compartment of your Classic Porsche with a high-quality reproduction of a long-discontinued Porsche part.
Designed using SolidWorks CAD and precisely molded for a perfect fit with a period correct look
HDPE construction with reinforced mounting tabs

These velocity stacks will fit the following applications:
3 barrel Weber and Zenith Carburetors
Porsche Mechanical Fuel Injection Throttle Bodies

Will not fit PMO Induction Carburetors or EFI Systems

Measures 2” Tall with a 46mm Bore 

Sold Individually, Order (6) and Make Your Engine Look Like New

Click 'Zoom in' for large parts diagram.
Diagram ref no 30