Product Overview
The AEM 50-1200 E85 In-Tank Fuel Pump is engineered for high-performance naturally aspirated and forced induction EFI vehicles. Its robust internal construction is specifically designed to withstand the low lubricity characteristics of ethanol and methanol fuels, ensuring reliable operation. This pump has been rigorously tested for compatibility with ethanol fuels up to E100, methanol fuels up to M100, and all types of gasoline.
Key Features
- Tested and compatible with ethanol fuels up to E100, methanol fuels up to M100, and all types of gasoline.
- Designed for high output naturally aspirated and forced induction EFI vehicles.
- Each pump is tested to flow 340 LPH (Liters Per Hour) at 40 PSI.
- Compact 39 millimeter diameter fits most applications.
- Kit includes fuel pump, rubber sleeve, end caps, pre-filter, hose, clamps, and flying lead.
- Universal Fit type for broad compatibility.
Safety Information
WARNING: Improper installation or use of this product can lead to serious injury, death, or property damage. Fuel systems operate under high pressure and contain highly flammable liquids. Always observe the following safety precautions:
- Installation should only be performed by a qualified professional technician.
- Ensure the vehicle's battery is disconnected before beginning any work on the fuel system.
- Relieve fuel system pressure before disconnecting any fuel lines.
- Work in a well-ventilated area, away from open flames, sparks, or other ignition sources.
- Wear appropriate personal protective equipment, including eye protection and fuel-resistant gloves.
- Have a fire extinguisher readily available.
- Verify all connections are secure and leak-free before operating the vehicle.
Package Contents
Verify that all components listed below are present in your package:
- AEM 50-1200 E85 In-Tank Fuel Pump
- Rubber Buffer Sleeve
- End Caps
- Pre-filter (Fuel Strainer)
- Internal Fuel Hose
- Hose Clamps (2)
- Wiring Harness (Flying Lead)
This image displays the AEM 50-1200 E85 In-Tank Fuel Pump along with its complete installation kit. Components visible include the fuel pump unit, a rubber sleeve, end caps, a pre-filter, fuel hose, and hose clamps, all essential for proper installation.
Installation Guide
Installation of an in-tank fuel pump requires specialized tools and knowledge of automotive fuel systems. It is highly recommended that this procedure be performed by a certified automotive technician.
Before You Begin
- Ensure the vehicle's fuel tank is near empty to minimize fuel spillage.
- Disconnect the negative terminal of the vehicle's battery.
- Relieve fuel system pressure according to the vehicle manufacturer's service manual.
- Gather all necessary tools, including a fuel line disconnect tool, hose clamps, and a fuel-resistant sealant if required.
Installation Steps (General)
- Locate and access the fuel pump assembly, typically found under the rear seat or in the trunk area, requiring removal of access panels or the fuel tank itself.
- Carefully disconnect electrical connectors and fuel lines from the existing fuel pump module.
- Remove the old fuel pump from the module. Note the orientation and connections for the new pump.
- Install the AEM 50-1200 fuel pump into the module, ensuring the pre-filter is correctly attached and oriented to prevent clogging.
- Secure the pump within the module using the provided rubber sleeve and end caps, ensuring a snug fit.
- Connect the internal fuel hose and secure with the provided clamps.
- Reinstall the fuel pump module into the fuel tank, ensuring the sealing gasket is properly seated to prevent leaks.
- Reconnect fuel lines and electrical connectors.
- Reconnect the vehicle's battery.
- Prime the fuel system by cycling the ignition key several times without starting the engine. Check for any fuel leaks.
- Start the engine and check for proper operation and any signs of leaks.
A detailed view of the AEM 50-1200 E85 In-Tank Fuel Pump. The pump body is black with green end caps, featuring the 'AEM Performance Electronics' logo and part number '50-1200', indicating its compatibility with gasoline, ethanol, and methanol fuels.
Operating Principles
The AEM 50-1200 is an electric in-tank fuel pump designed to draw fuel from the vehicle's fuel tank and deliver it under pressure to the engine's fuel injection system. It utilizes a gerotor-style pumping mechanism, known for its efficiency and durability, especially with various fuel types including ethanol and methanol. The pump maintains a consistent fuel pressure and flow rate, ensuring optimal fuel delivery for high-performance applications.
Maintenance
Proper maintenance of your fuel system components, including the fuel pump, is crucial for longevity and performance. While the AEM 50-1200 fuel pump itself is designed for durability, regular checks of the surrounding system are recommended.
- Fuel Filter Replacement: Regularly inspect and replace your vehicle's external fuel filter as per the vehicle manufacturer's recommendations. A clogged fuel filter can put undue strain on the fuel pump.
- Pre-filter Inspection: If accessible, periodically inspect the fuel pump's pre-filter (strainer) for debris and clean or replace if necessary.
- System Leaks: Periodically check all fuel lines and connections for any signs of leaks or damage. Address any leaks immediately.
- Electrical Connections: Ensure all electrical connections to the fuel pump are clean, secure, and free from corrosion.
- Fuel Quality: Use high-quality fuel to minimize contaminants that can affect pump performance and lifespan.
Troubleshooting
If you experience issues with your fuel pump, consult the table below for common problems and potential solutions. For complex issues, professional diagnosis is recommended.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine Cranks but Won't Start | No fuel pressure; Clogged fuel filter; Faulty electrical connection; Defective fuel pump relay. | Check fuel pressure; Replace fuel filter; Inspect wiring and connections; Test/replace fuel pump relay. |
| Engine Stalls or Hesitates | Insufficient fuel flow; Clogged fuel filter; Low voltage to pump. | Check fuel pressure and flow; Replace fuel filter; Verify proper voltage at pump. |
| Loud Whining Noise from Fuel Tank | Fuel pump cavitation (low fuel level); Clogged pre-filter/strainer; Worn pump bearings. | Ensure adequate fuel level; Inspect/clean pre-filter; If noise persists, pump may need replacement. |
| Fuel Leaks | Improperly seated gasket; Loose fuel line connections; Damaged fuel lines. | Re-seat gasket; Tighten connections; Replace damaged lines. Immediately address all fuel leaks. |
Technical Specifications
| Specification | Value |
|---|---|
| Model Number | 50-1200 |
| Brand | AEM |
| Flow Rate | 340 LPH at 40 PSI |
| Fuel Compatibility | Ethanol (up to E100), Methanol (up to M100), All types of Gasoline |
| Pump Diameter | 39 mm |
| Fit Type | Universal Fit |
| Operation Mode | Electric, Gerotor |
| Mounting Type | In-Tank Mount |
| Material | Alloy Steel (Body) |
| Item Dimensions (L x W x H) | 2.76 x 2.76 x 5.51 inches |
| Item Weight | 12.5 ounces (approx. 354 grams) |
| UPC | 840879022556, 725771978777 |
Warranty Information
AEM products are manufactured to high standards and are backed by a limited warranty against defects in materials and workmanship. For specific warranty terms, conditions, and duration, please refer to the warranty documentation included with your product or visit the official AEM website. Keep your proof of purchase for warranty claims.
Customer Support
For technical assistance, installation questions, or any other inquiries regarding your AEM 50-1200 E85 In-Tank Fuel Pump, please contact AEM customer support. You can find contact information and additional resources on the official AEM website or through their Amazon brand store:
