2-1/4 Str. Filler Neck Dragster 12-Bolt Long

The 2-1/4 Str. Filler Neck Dragster 12-Bolt Long by JAZ is purpose-built for high-performance fuel system installations in drag racing and street rod applications. This straight filler neck assembly is designed for vehicles equipped with 12-bolt differentials running custom fuel tanks, where reliable fuel delivery and tank access are critical to consistent performance. Whether you're building a dedicated quarter-mile competitor or restoring a classic hot rod, this JAZ component ensures your fuel system meets the demands of sustained acceleration and high-rpm operation.

The straight configuration of this filler neck eliminates unnecessary bends that can restrict fuel flow during rapid tank fill cycles common in pit stop scenarios. The long design accommodates deep or rear-mounted fuel cells typical in dedicated dragsters and modified street machines, offering flexibility in tank placement without compromising ease of access. JAZ's engineering ensures clean, straight-wall construction that resists deformation under vibration and thermal cycling—critical factors in motorsports applications where tank integrity directly impacts reliability. The 2-1/4-inch diameter sizing is compatible with standard fuel fill hose and cap assemblies, making this a drop-in solution for custom fuel system builds.

Drag racers and performance enthusiasts benefit most from this JAZ filler neck when upgrading to custom aluminum or steel fuel cells in 12-bolt-equipped platforms. Installation requires basic fuel system plumbing knowledge and compatible tank baffling to ensure smooth fuel delivery under high-g lateral loads. This component works seamlessly with aftermarket fuel pumps and regulators, making it an ideal choice for carbureted or EFI systems pushing serious horsepower. Proper installation of this long straight neck prevents fuel sloshing and aeration during hard cornering or full-throttle acceleration, maintaining fuel pressure stability throughout your run.