Honda K20/K24 DC5/EP3 50mm Electronic Fuel Injection (EFI) Throttle Bodies (ITB's) (For Ported Cylinder Heads)


These Direct-To-Head (DTH) set of Shaftless Butterfly Universal Individual Throttle Bodies (ITB's) feature our oversized Intake Ports for the Honda K20a/K20a2/K24 (DC5/EP3) Engines, typically found in the Honda Integra, Acura RSX, Civic Type R & Honda Accord Euro R. 

Cylinder head intake ports will need to be machined to match the intake port profile of these Throttle Bodies. Details of the Throttle Bodies Intake port profile can be viewed on the package drawing download below.

They feature AT Power’s lightweight precision machined billet aluminium individual round housings design, with our unique patented ‘Shaftless’ technology and knife edged butterfly valves providing proven improved induction airflow speed and increased engine performance.

AT Power has developed a unique range of Direct to Head (Electronic Fuel Injection (EFI)) Individual Throttle Body systems offering you multiple configurations and a range of optional extras to meet your specific engine tuning requirements.

Our Direct to Head Universal Throttle Bodies are supplied fully assembled ready to bolt on directly to the cylinder head intake face.

We offer a choice of product options including Billet machined Throttle linkage configurations including Drive-By-Wire (DBW), Throttle Positional Sensors (TPS) mounting kits, Billet aluminium Extension Tubes (Runners, Velocity Stacks) lengths, billet aluminium Ram Pipes (Trumpets) lengths and one-piece billet aluminium Fuel Rails with brackets to suit a range of fuel injectors.

We also offer optional extras including fuel rail fittings, vacuum take off fittings for vacuum assisted brakes, rotary contact or Hall Effect contactless Throttle Positional Sensors (TPS), Drive-By-Wire (DBW) actuation and a choice of 18 different anodising colours. Anodising-Colour-Swatch

To complete your installation, we also offer ancillary supporting parts including fuel injectors, air filtration, motorsport cables, tuning aids, fuel pressure regulator and engine management systems (ECU’S).  

Attention! For fitment within the standard engine bay please select "Standard Fitment" from the Extensions Length option set below. For standard fitment this product will be supplied with curved SLS 3D printed Extension Tubes (Runners, Velocity Stacks) (Colour Black).



For fitment into standard (OEM) vehicles, it may be necessary to relocate the power steering pump or alternator & replace the existing water pump with an aftermarket electric water pump to allow package clearance for the installation of these Throttle Bodies.

These ancillary products are directly available through:

T7DESIGN Ltd (UK) Press here for T7DESIGN website link.

TEGIWA IMPORTS Ltd (UK) Press here for TEGIWA IMPORTS website link.

This product requires an after-market engine management system (ECU) for correct engine fuelling operation.

AT Power offer a choice of after-market (ECU's) which can be viewed on the ECU's & Wiring Looms page of our website, or by following this link ECU's & Wiring Looms

As with all after-market engine management systems, base maps are offered “as-is” and dyno tuning is fully recommended, to avoid causing any damage to your engine.


Product Informational Downloads:

PDF Package Drawing Download

Throttle Terminology

Drive By Wire Actuator Configurations


How to Order:

In-order to verify your specific requirements, and provide the correct solution for your application please select your configuration from the option sets below: 

For Boosted applications standard fitment aluminium Extension Tubes (Runners, Velocity Stacks) will be replaced with SLS 3D Printed Extension Tubes (Runners, Velocity Stacks), select from Induction Type option set below.

If you require assistance, please feel free to call us and speak with a member of our sales team.


Trade Customers:

Please contact us to enquire about our trader's discount structure.


Price starting from: £2,075.00 per unit ex VAT

Brand AT Power
Product Code 102-109-00056

Price: £2,075.00 per unit ex VAT

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