Customise Honda B16A/B18C5 45 mm EFI Shaftless ITBs – Direct‑to‑Head Throttle Bodies
Boost B16A/B18C5 performance with AT Power’s 45 mm EFI Shaftless ITBs – precision billet direct‑to‑head fitment, no manifold required, OEM-compatible and ready for aftermarket ECU tuning.
Compatible Engines:
Honda B16A & B18C5
Civic, CRX, and Integra Type R (both stock and engine-swapped setups)
Professional installation, ECU Compatibility and Tuning required. Failure to install this product correctly will cause damage to your engine and void warranty.
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*Anodising Colours £120 exc. VAT - Silver & Black £0
*Select Cable Pull Or Drive-By-Wire
*Select Configuration (CP)
Refer to Technical Doc
*Select Configuration (DBW)
Refer to Technical Doc
*Select Extension Length
Please Contact us to order Curved Extensions
*Select Ram Pipes
*Select Fuel Rail End Fittings
*Select Fuel Injector Mounting Brackets
*Select TPS Throttle Side
For TPS side, refer Technical Drawings in Documents
*Select TPS Throttle Side
For TPS side, refer Technical Drawings in Documents
*Select Throttle TPS (RHS)
*Select Throttle TPS (LHS)
£1,495.00 (exc. VAT)
Honda B16A/B18C5 45 mm EFI Shaftless ITBs – Direct‑to‑Head Throttle Bodies
Unleash the full potential of your B16A or B18C5 engine – typically found in Civic, CRX & Integra Type R – with AT Power’s 45 mm Shaftless ITBs. This Direct-To-Head system delivers precision-fit airflow, superior throttle response, and requires no manifold – just bolt directly onto the cylinder head
Compatible Engines:
Honda B16A & B18C5
Civic, CRX, and Integra Type R (both stock and engine-swapped setups)
While similar engine may share architecture, port shape and spacing can vary. Check the technical drawings match your inlet ports.
Performance Advantages:
- Gains of +35 bhp and +20 lb‑ft torque reported on standard B16A/B18C5 engines – along with sharper throttle response and improved part-throttle drivability
Key Features & Benefits:
- Fully Port-Matched, Bolt-On Design: No manifold needed – ready to install with OEM intake ports. Compatible with standard injectors, throttle cable, and TPS
- Shaftless Technology: Patented Shaftless butterfly valve design improves air velocity by 10% and throttle response by eliminating the central throttle shaft obstruction.
- Twin Oval Billet Housings: CNC-machined from high-grade billet aluminium for superior strength, durability, and reduced weight.
- Fully Assembled, Ready to Install: Delivered pre-assembled for direct bolt-on installation to the cylinder head intake face.
- EFI Ready with injector Blank-Offs: Allows flexibility for custom fuel delivery setups. Fuel rails and injectors sold separately.
Performance Advantages:
- Increased horsepower and torque
- Lightweight and durable
- Sharper throttle response and increased engine performance
- Perfect for naturally aspirated and tuned applications
- Ideal for motorsport applications, track day builds, race cars or high-performance engine builds and street setups
If you require something more bespoke, please contact us.
Engine Relocation
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:
TEGIWA IMPORTS Ltd (UK) Press here for TEGIWA IMPORTS website.
Complete your build. Sold Separately:
- AirFlow Synchrometer here.
- Megaflow Air Filter JC50/S/65 here.
- 3m Motorsport Cable here.
- Throttle Twin Housing – 1/8″ BSP to 5/16″ (8mm) Hosetail Fitting here.
Important:
- ECU Compatibility and Tuning Required: Proper engine management system tuning is necessary for optimal operation and fuelling.
- Maps are supplied “as-is”. Professional dyno tuning is strongly recommended to ensure optimal performance and avoid potential engine damage.
If you require something more bespoke, please contact us.
Motorsport Use Only! This product is designed for professional motorsport applications and must be installed by a qualified technician. If assistance is required, please contact AT Power’s sales team.
Delivery / Lead Time
This Configured product is made to order:
- Standard dispatch time is approximately 8-9 weeks from receipt of payment.
Please note that this timeframe is a guideline and is not guaranteed.
If purchased with other items:
- Dispatched based on the item with the longest lead time in your order.
Postage and Shipping Costs:
Shipping costs are automatically calculated at the checkout after you enter your delivery address.
For sales, please see our Terms & Conditions.
Documents
Please Note
Ordering
Before placing your order, please ensure that the technical drawings match your engine’s inlet ports and that the throttle bodies will fit correctly, as engine specifications may vary or have been modified.
Anodised Finishes:
Kindly note that the colour swatches or photoshopped images are intended for guidance only. Variations in colour and finish may occur due to the inherent nature of the anodising process and its suitability. Additionally, printed materials and on-screen displays may differ in shade.
Returns and Cancellations:
Our Throttles are classified as ‘Configured’ products, as they are made to order. Please note that different terms apply to cancellations and refunds for configured items. You can find more information, clicking here.
Installation:
- ECU Compatibility and Tuning Required: Proper engine management system tuning is necessary for optimal operation and fuelling.
- Maps are supplied “as-is”. Professional dyno tuning is strongly recommended to ensure optimal performance and avoid potential engine damage.
Incorrect installation of this product may result in engine damage.
This is a motorsport-grade component and must be installed by a qualified technician. If you are unsure, we strongly advise that all mechanical and safety-critical work be carried out by a certified expert.
S-CAN 3D accepts no liability for damage resulting from improper installation or misuse. For support or guidance, please contact the AT Power sales team.
Honda B16A/B18C5 45 mm EFI Shaftless ITBs – Direct‑to‑Head Throttle Bodies
Unleash the full potential of your B16A or B18C5 engine – typically found in Civic, CRX & Integra Type R – with AT Power’s 45 mm Shaftless ITBs. This Direct-To-Head system delivers precision-fit airflow, superior throttle response, and requires no manifold – just bolt directly onto the cylinder head
Compatible Engines:
Honda B16A & B18C5
Civic, CRX, and Integra Type R (both stock and engine-swapped setups)
While similar engine may share architecture, port shape and spacing can vary. Check the technical drawings match your inlet ports.
Performance Advantages:
- Gains of +35 bhp and +20 lb‑ft torque reported on standard B16A/B18C5 engines – along with sharper throttle response and improved part-throttle drivability
Key Features & Benefits:
- Fully Port-Matched, Bolt-On Design: No manifold needed – ready to install with OEM intake ports. Compatible with standard injectors, throttle cable, and TPS
- Shaftless Technology: Patented Shaftless butterfly valve design improves air velocity by 10% and throttle response by eliminating the central throttle shaft obstruction.
- Twin Oval Billet Housings: CNC-machined from high-grade billet aluminium for superior strength, durability, and reduced weight.
- Fully Assembled, Ready to Install: Delivered pre-assembled for direct bolt-on installation to the cylinder head intake face.
- EFI Ready with injector Blank-Offs: Allows flexibility for custom fuel delivery setups. Fuel rails and injectors sold separately.
Performance Advantages:
- Increased horsepower and torque
- Lightweight and durable
- Sharper throttle response and increased engine performance
- Perfect for naturally aspirated and tuned applications
- Ideal for motorsport applications, track day builds, race cars or high-performance engine builds and street setups
If you require something more bespoke, please contact us.
Engine Relocation
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:
TEGIWA IMPORTS Ltd (UK) Press here for TEGIWA IMPORTS website.
Complete your build. Sold Separately:
- AirFlow Synchrometer here.
- Megaflow Air Filter JC50/S/65 here.
- 3m Motorsport Cable here.
- Throttle Twin Housing – 1/8″ BSP to 5/16″ (8mm) Hosetail Fitting here.
Important:
- ECU Compatibility and Tuning Required: Proper engine management system tuning is necessary for optimal operation and fuelling.
- Maps are supplied “as-is”. Professional dyno tuning is strongly recommended to ensure optimal performance and avoid potential engine damage.
If you require something more bespoke, please contact us.
Motorsport Use Only! This product is designed for professional motorsport applications and must be installed by a qualified technician. If assistance is required, please contact AT Power’s sales team.
Delivery / Lead Time
This Configured product is made to order:
- Standard dispatch time is approximately 8-9 weeks from receipt of payment.
Please note that this timeframe is a guideline and is not guaranteed.
If purchased with other items:
- Dispatched based on the item with the longest lead time in your order.
Postage and Shipping Costs:
Shipping costs are automatically calculated at the checkout after you enter your delivery address.
For sales, please see our Terms & Conditions.
Documents
Please Note
Ordering
Before placing your order, please ensure that the technical drawings match your engine’s inlet ports and that the throttle bodies will fit correctly, as engine specifications may vary or have been modified.
Anodised Finishes:
Kindly note that the colour swatches or photoshopped images are intended for guidance only. Variations in colour and finish may occur due to the inherent nature of the anodising process and its suitability. Additionally, printed materials and on-screen displays may differ in shade.
Returns and Cancellations:
Our Throttles are classified as ‘Configured’ products, as they are made to order. Please note that different terms apply to cancellations and refunds for configured items. You can find more information, clicking here.
Installation:
- ECU Compatibility and Tuning Required: Proper engine management system tuning is necessary for optimal operation and fuelling.
- Maps are supplied “as-is”. Professional dyno tuning is strongly recommended to ensure optimal performance and avoid potential engine damage.
Incorrect installation of this product may result in engine damage.
This is a motorsport-grade component and must be installed by a qualified technician. If you are unsure, we strongly advise that all mechanical and safety-critical work be carried out by a certified expert.
S-CAN 3D accepts no liability for damage resulting from improper installation or misuse. For support or guidance, please contact the AT Power sales team.
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