Customise Honda B16A/B18C5 45 mm EFI Direct‑to‑Head Throttle Bodies

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.