1994-1998 Powerstroke OBS Regulated Return Fuel System Kit (DD-73FS-OBS-RRK-V3)

Fits

Note: This kit is NOT a direct bolt-in for vans. Installation requires custom modifications

Clean up your engine valley and give your 7.3L OBS Powerstroke the consistent fuel pressure it craves. This regulated return kit eliminates the restrictive factory mechanical pump and filter bowl, ensuring your injectors stay fed and cool for smoother idle, quicker starts, and better throttle response. It’s the ultimate foundation for high-performance builds, opening up crucial space in the valley for twin HPOP setups or custom turbos while providing the flow needed to support heavy-hitting aftermarket injectors.

 CARB Approved - CARB EO# : D-872-3 (94-97 F250/F350/E250/E350 ONLY!)

Part Number: DD-73FS-OBS-RRK-V3

• Fuelab bypass pressure regulator
• 3/8" CNC stainless hard lines
• Protective covered Teflon braided hoses
• Liquid-filled fuel pressure gauge
• Front-feed heat management design
• Fits with Both Stock and Aftermarket Turbocharger Applications
• Quicker Starting
• Quieter Engine Operation
• Improved Throttle Response
• Increased Power Output
• Increased Fuel Economy

• Required Components: This kit eliminates the factory mechanical pump and filter bowl. It REQUIRES a high-pressure electric fuel delivery system to function. For a complete "bolt-in" solution, we recommend pairing this with the FASS Titanium Signature Series 140GPH (TSF14180F140G).
• Heat Management: Engineered to feed the front cylinder head ports (away from turbo heat) and return from the rear ports for lower fuel temperatures and maximum injector life.
• E-Series Van Owners: This kit is NOT a direct bolt-in for vans. Installation requires custom modifications; neither Dirty Diesel Customs nor the manufacturer can provide technical support for van-specific fitment.
• Performance Ready: Supports up to 180cc injectors with a standard high-pressure electric pump. For builds running 200cc or larger injectors, we recommend a High Volume Fuel Delivery Kit.
• Maintenance Essential: Since you’ll be opening the fuel system, we highly recommend refreshing your injector seals with an Alliant Power Seal Kit (AP0001).
• Wiring Included: Now includes the Northup Automotive OBS Fuel Bowl Delete Wiring Harness for a clean, plug-and-play installation!
• Replacement Filters: Keep your system running clean with the CAT High-Efficiency Fuel Filter (CAT-1R-0750) and the CAT Water Separator (175-2949).

Click Here For Instructions