Vauxhall X20XE / C20XE 42mm EFI Shaftless ITB Throttle Bodies – Direct-to-Head Kit
Unlock peak performance from your Vauxhall X20XE or C20XE engine with our 42mm EFI Direct-to-Head (DTH) Individual Throttle Bodies (ITBs). Designed and precision-engineered by AT Power, these Twin Housing Shaftless Butterfly Throttle Bodies are port-matched to the OEM intake ports for seamless integration and maximum efficiency.
Compatible Engines:
- Vauxhall X20XE
- Vauxhall C20XE
These engines are widely known for their performance potential and were originally fitted to various Opel/Vauxhall models, including:
- Vauxhall Astra MK3 & MK4
- Vauxhall Calibra 2.0 16v
- Vauxhall Cavalier MK3
- Opel Kadett E GSi
- Opel Vector A & B
The ITBs are port-matched to the OEM intake ports of these engines, making them a direct bolt-on performance upgrade with no additional fabrication required.
Perfect for road, race, or track application, this ITB kit is designed to deliver responsive, reliable, and tunable performance straight out of the box. Supplied fully assembled, it’s ready to mount and drive.
Key Features & Benefits:
- Direct-to-Head (DTH) EFI Throttle Bodies: Designed for precise alignment to the cylinder head – no adaptor plates required
- Shaftless Technology: Patented Shaftless butterfly valve design improves air velocity by 10% and throttle response by eliminating the central throttle shaft obstruction.
- Precision Port Matching: CNC-machined to align perfectly with OEM intake ports for seamless airflow.
- Complete EFI Solution: Developed specifically for electronic fuel injection setups – perfect for naturally aspirated performance builds or motorsport applications.
- Lightweight Billet Aluminium Housings: Twin oval throttle housings are CNC-machined from high-grade billet aluminium for strength, weight reduction, and thermal efficiency.
- Improved Induction Airflow: Knife-edged butterfly blades reduce turbulence and increase engine power.
- Fully Assembled: Supplied ready to bolt on, with no additional fabrication required.
- Throttle Position Sensors (TPS): Choose between rotary contact or Hall Effect contactless sensors for reliable tuning input.
- Make Power personal with anodised colour finishes to suit your setup
Performance Advantages:
- Increased horsepower and torque
- Lightweight and durable
- Sharper throttle response and increased engine performance
- Perfect for naturally aspirated and tuned applications
ECU Information
Motorsport Electronics Engine Management system with full Plug-n-Play loom for the Vauxhall X20XE/C20XE engine, which retains fully sequential injection.
ME221 – Entry level stand alone ECU system. Perfect for simple stand alone 4 cylinder port injector engines. We recommend this optional setup for cable pull.
ME360 – Flagship standalone ECU for universal applications and DBW setups. Supports any port injected engine up to 8 cylinder.
If you require something more bespoke, please contact us.
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.
