DeatschWerks 6-401-55ST 5.5L Staged Surge Tank Includes 3 DW400 Fuel Pumps

DeatschWerks 6-401-55ST 5.5L Staged Surge Tank with 3 DW400 Fuel Pumps

The DeatschWerks 6-401-55ST 5.5L Staged Surge Tank is a high-performance, motorsport-grade fuel delivery solution engineered to eliminate fuel starvation under extreme driving conditions. Designed for turbocharged, supercharged, and high-output naturally aspirated builds, this multi-pump external surge tank system provides a stable and consistent fuel supply even during hard cornering, drag launches, and sustained high-boost operation. With a 5.5L capacity and integrated staged pump control, this system dramatically improves fuel system reliability, efficiency, and overall engine safety for demanding performance applications.

Key Features

• 5.5L high-capacity staged surge tank designed for sustained high-performance fuel delivery
• Configured with 3 DeatschWerks DW400 internal fuel pumps for high-flow capability
• Supports staged pump activation for improved efficiency and reduced heat load
• Multi-port design with 4-port configuration for complete fuel system circulation
• Includes 3 pump adapter sleeves for DW-series pump compatibility
  
• High-quality aluminum construction designed for motorsport durability
• Designed for external mounting away from engine bay heat exposure
• Engineered to maintain consistent fuel pressure under high G-force conditions

Benefits

• Prevents fuel starvation during high-performance driving scenarios such as drifting, racing, and high-boost acceleration
• Improves engine reliability by maintaining consistent fuel pressure to fuel rails
• Reduces heat buildup and electrical load through staged pump operation strategy
• Enhances fuel system longevity with distributed pump workload
• Provides expandable fuel capacity without requiring full fuel tank replacement
• Supports safer tuning for high horsepower builds under sustained load
• Manufacturer-supported product with limited warranty coverage for material and workmanship defects (terms may vary by supplier)

Product Specs

• Model: 6-401-55ST (5.5L Staged Surge Tank System)
• Tank Capacity: 5.5 liters
• Pump Configuration: 3x DeatschWerks DW400 internal pumps
  
• Material: High-strength aluminum construction
• Fitting Sizes:
  • Main outlet: -10AN
  • Additional ports: -8AN (reducible to -6AN with adapters)
• Port Configuration: 4-port system (feed, return, tank return, and lift feed)
• Included Components:
  • Surge tank body
  • Pump hanger assembly
  • Hose barb to AN fittings (5/16” and 3/8”)
  • Pump adapter sleeves (x3)
  • 6AN plug fittings (x2)
  • Ring terminal wiring kit
• Fuel System Type: Return-style multi-pump staged surge system
• Color: Raw aluminum finish (performance industrial styling)

Install Difficulty level

Installation is considered straightforward for experienced performance installers or professional shops familiar with EFI fuel systems and staged pump wiring. The design is engineered for clear port labeling and structured routing, allowing for efficient setup when following proper fuel system layout procedures. Most installations are completed in a relatively short professional labor window depending on vehicle configuration and tuning requirements.

Vehicle Fitment

This surge tank system is designed as a universal (may require modification) high-performance motorsport fuel system component. It is intended for EFI-equipped vehicles requiring upgraded fuel delivery for racing, drift, drag, time attack, or high-boost street applications. Fitment depends on available space, fuel system architecture, and tuning configuration rather than specific year, make, or model. Professional installation is recommended to ensure proper integration with the existing fuel system, return lines, and ECU control strategy.

CARB / Emissions Compliance

No CARB EO (Executive Order) number or emissions certification has been identified for this product. Not legal for sale or use in California.

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.