Upgrade your classic Porsche induction system with this 42mm performance throttle body, specifically engineered for Porsche 911 (1970 to 1978) and 914/6 models. Designed to suit a wide range of factory engines, this throttle body provides a perfect balance of airflow efficiency, drivability, and period-correct performance enhancement.
Compatible with Porsche 911 E, S, T-RS RSR, and Carrera variants, this unit is precision matched to 32mm, 35mm, 36mm, and 39mm intake ports, ensuring optimal airflow velocity and throttle control across multiple engine configurations including 2.0L, 2.2L, 2.4L, 2.7L, 2.8L, and 3.0L engines.
The 42mm throttle size delivers measurable improvements in throttle response and top-end breathing while maintaining excellent low-speed drivability, ideal for road, fast road, and classic motorsport applications. Manufactured to exacting standards, this throttle body is suitable for restorations, performance upgrades, and competition builds where reliability and airflow efficiency are critical.
Key Features & Benefits:
- 42mm throttle size for enhanced airflow and response
- Fits Porsche 911 (1970-1978) & 914/6
- Compatible with 911 E, S, T-RS RSR & Carrera
- Supports 32-39mm intake port sizes
- Optimised for naturally aspirated flat-six engines
- Ideal for classic restoration, performance road & motorsport use
- Precision engineered for perfect fit and long-term durability
Whether you are restoring a period-correct classic or unlocking additional performance from your air-cooled flat-six, this Porsche 911 42mm throttle body upgrade offers proven performance gains with OEM-level fitment.
Optional Extras:
Fuel System Kit – Hose, Adaptors, Fuel Pressure Regulator & Pico 377cc Injectors
- Complete, matched fuel delivery solution for reliable performance
- High-quality hoses and precision adaptors ensure leak-free installation
- Includes fuel pressure regulator for stable, consistent fuel control
- Pico 377cc injectors deliver accurate atomisation and improved throttle response
- Designed for performance and longevity in high-demand engine applications
Heater Duct System
- Restores proper airflow to engine-mounted heating system
- Improves cabin heat efficiency and demisting performance
- Durable construction resistant to heat and vibration
- Direct-fit solution for clean, OEM-style installation
- Essential for road-driven and cold-weather vehicles
Engine Breather System
- Controls crankcase pressure for improved engine reliability
- Reduces oil misting and prevents intake contamination
- Helps maintain stable idle and consistent performance
- High-quality components designed for performance engines
- Ideal upgrade for both road and motorsport applications
Emerald ECU Kit – Cable Pull or Drive-By-Wire
- Advanced programmable ECU for precise engine management
- Available for traditional cable throttle or modern drive-by-wire setups
- Improves power delivery, throttle response, and drivability
- Supports custom tuning for modified and performance engines
- Proven reliability with extensive motorsport and road use
911 Rain Guard Kit – Critical Engine Protection
- Prevents water ingress into the intake system
- Protects engine from hydro-lock and severe internal damage
- Essential safety upgrade for road-driven vehicles
- Discreet design with OEM-style fitment
- Failure to fit may result in serious engine damage
MegaFlow Air Filter
- High-flow design improves engine breathing and performance
- Superior filtration protects engine from dirt and debris
- Increases airflow without sacrificing filtration efficiency
- Reusable and easy to maintain
- Ideal for performance road and track applications
Make Power Personal – Anodised Finish Colours
If you require something more bespoke, please contact us.
Complete the setup – AirFlow Synchrometer 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.
