DeatschWerks Return Fuel System Conversion Kit for BMW 4 Series M4

CARB Compliance / Exemption Warning: If you live in California and your application for this product is not CARB Compliant / Exempt, then you cannot purchase it for public highway or street use (in that case it could only be used for formally sanctioned race use on a racing vehicle that may never be used on a public highway or street). If your application is not CARB Compliant / Exempt and you're shipping to California, our system will let you know on the final checkout page.

E85 Info: This return fuel system fully supports the use of E85 fuel.

Looking for the ultimate plug-and-play fuel system upgrade for your BMW 4 Series M4? This new Return Fuel System Conversion Kit converts your factory returnless fuel system to a higher performance "return type" configuration and pairs it with a high-output fuel pump. Your upgraded fuel system will support very high horsepower applications on pump gas and even higher numbers on E85!

Key Features:

• A complete plug-and-play, high-horsepower fuel system upgrade!
• Very high flow rate! Supports very high horsepower on pump gas and and even higher on ethanol.
• Fuel pump is a "drop-in" installation and fuel return kit comes with all hardware needed.
• Fully ethanol (E85) compatible.
• Designed for -6AN feed line and utilization of OE feed for return.
• Retain all OE functionality, including: PnP harness connector, fuel level sender, fuel surge bucket.
• Fuel return kit includes regulator and filtration.
• Fuel return kit features cost-effective CPE rubber fuel lines that are cord reinforced for high pressure and lined for compatibility with ethanol-based fuels up to E85. They also feature a braided stainless steel outer shell for increased durability and robustness.
• Quiet and reliable fuel pump turbine impeller.
• 3-year comprehensive warranty.