Key Features and Benefits
- High Volume Fuel Flow Design
Engineered to support high horsepower applications and upgraded fuel systems. - Adjustable Fuel Pressure
Easily fine-tune fuel pressure to match your setup and tuning requirements. - Boost/Vacuum Reference Port
Maintains consistent fuel pressure relative to manifold pressure—critical for turbo and supercharged engines. - Durable Black Anodized Finish
Corrosion-resistant and built to handle harsh engine bay conditions. - Multiple ORB Port Configuration
Flexible plumbing options for custom fuel system layouts. - Compatible with Gasoline and Ethanol (E85)
Built to handle modern performance fuels without breaking down.
AEM 25-300BK Black Prime Extent Adjustable Fuel Drive Regulator
Why Fuel Pressure Control Matters
Fuel pressure is one of the most critical variables in engine performance. Too low, and you risk running lean (goodbye engine). Too high, and you flood the system (goodbye efficiency and power).
The AEM 25-300BK regulator ensures consistent fuel delivery across all load conditions, especially in boosted applications where pressure needs to rise with boost.
Manufactured to Earl’s high quality specifications
Why Choose the AEM 25-300BK?
AEM is known for producing reliable, performance-focused fuel system components, and the 25-300BK regulator is no exception. It delivers consistent pressure control, flexible installation, and durability—everything you need when your build is no longer “stock-ish.”
Because once you start making real power, fuel pressure stops being optional.
Sturdy and long lasting
Common Applications
- Turbocharged and supercharged builds
- High horsepower street and race vehicles
- E85 and flex fuel setups
- Custom return-style fuel systems
- Performance fuel system upgrades
Technical Highlights
- Type: Adjustable fuel pressure regulator
- Flow: High-volume design
- Reference: Boost/vacuum port
- Finish: Black anodized
- Fuel Compatibility: Gasoline, E85, race fuels
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