Snow Performance SNF-52599X Xtreme Triple Pump Fuel Hat for 1999-2004 Mustang

Vehicle Fitment

• 1999-2003 Ford Mustang Base (3.8L V6)
• 2004 Ford Mustang Base (3.9L V6)
• 1999-2004 Ford Mustang GT (4.6L V8)
• 2001 Ford Mustang GT Bullitt (4.6L V8)
• 2003-2004 Ford Mustang Mach 1 (4.6L V8)

Fitment Notes

• Does NOT fit 2003-2004 Ford Mustang Cobra (Terminator) - different fuel tank design
• Designed for return-style fuel system installations only; not compatible with returnless fuel systems
• Compatible with gasoline, E10, E85, E98, and 100% ethanol; NOT compatible with methanol
• All three 490 LPH pumps MUST run simultaneously at all times - pump staging is not supported on this configuration; backfeed pressure issues will occur if any pump is unpowered
• Retains OE fuel level sending unit, EVAP system, filler neck, and (if equipped) saddle-tank transfer pump functionality

Features

• Three matched 490 LPH (535 LPH) TI Automotive (Walbro) pumps for absolute maximum fuel flow
• CNC-machined billet 6061 aluminum manifold with precision internal fuel passages
• Black anodized finish for corrosion resistance and E85/ethanol compatibility
• Viton chemical-resistant O-rings ensure a secure, leak-free pump seal
• Combined pump sock prefilter feeds all three pumps from a single inlet, eliminating fuel starvation
• 10-micron prefilter mounts directly to pumps - no bulkheads or extra hardware required
• Female 10AN ORB feed and 8AN ORB return ports for clean, professional plumbing
• Engineered, CNC-machined, and assembled in the USA

Specifications

• Configuration: Triple Pump Xtreme (three 490 LPH / 535 LPH TI Automotive/Walbro pumps)
• Estimated power support: 1,900+ rwhp on E85 / 2,500+ rwhp on gasoline
• All three pumps must operate simultaneously - no staging capability
• Feed port: Female 10AN ORB
• Return port: Female 8AN ORB
• Prefilter: 10-micron, direct-mount to pumps
• Height: 8.6 in | Width: 8.7 in | Length: 15.5 in
• Weight: 7.7 lbs (hat assembly only)
• Finish: Black anodized
• Material: 6061 billet aluminum
• Not CARB legal; not for sale in California

Included Components

• 3x 490 LPH TI Automotive (Walbro) 535 fuel pumps
• 1x CNC-machined billet aluminum fuel hat assembly
• 1x Combined 10-micron pump sock/prefilter assembly
• 1x Pump wiring harness
• 1x Fuel level sending unit wiring harness
• Viton O-rings (installed)
• Note: Fittings and fuel level sending unit are NOT included

Product Description

The Snow Performance SNF-52599X is the absolute peak of the SNF-52599 fuel hat lineup, built for 1999-2004 non-Cobra Ford Mustangs that demand maximum fuel volume at all times. It houses three 490 LPH (535 LPH) TI Automotive (Walbro) pumps inside a CNC-machined 6061 billet aluminum manifold with a black anodized finish, supporting up to 1,900+ rwhp on E85 and 2,500+ rwhp on gasoline - more than any other configuration in the series. A shared 10-micron prefilter feeds all three pumps simultaneously, preventing fuel starvation without requiring full submersion.

Unlike the streetable or Race configurations, the Xtreme version requires all three pumps to run at all times. Attempting to stage or selectively power individual pumps will cause backfeed pressure issues through any unpowered pump - making this configuration strictly for max-effort, dedicated race builds where fuel demand is constant and total flow is the priority. Builders looking for staging capability should consider the SNF-52599H (Triple Streetable) or SNF-52599R (Triple Race) instead.