SKU: VIB10681
UPC: 690092145866
MPN: 10681
The Straight Bulkhead Adapter -4AN from Vibrant Performance is a precision-engineered fitting designed for custom fuel system, coolant line, and hydraulic brake plumbing in high-performance and modified vehicles. This adapter serves as a critical junction point in any serious engine bay upgrade, allowing installers to transition from bulk-mounted applications to standard -4AN hose and line assemblies. Whether you're building a fuel-injected swap, upgrading to a custom cooling circuit, or integrating a remote-mounted fuel filter system, this bulkhead adapter provides the reliable, leak-free connection your modification demands.
Constructed to Vibrant Performance's exacting standards, the Straight Bulkhead Adapter features a direct -4AN port configuration with a threaded body designed to secure firmly into aluminum billet components, firewall penetrations, or custom enclosures. The straight geometry eliminates unnecessary flow restrictions and reduces turbulence—essential when fuel velocity or pressure regulation consistency matters. The compact 3.54-inch length and minimal 0.02-pound weight make integration into space-constrained engine compartments straightforward, while the precision-machined threads ensure consistent clamping force and zero weeping at operating pressure. Anodized or plated finishes resist corrosion in underhood environments where moisture and salt exposure are routine.
Professional mechanics and dedicated enthusiasts building fuel system upgrades, LS or modern engine swaps, or closed-loop cooling systems rely on this adapter for OEM-grade durability without compromise. Installation requires only basic fitting tools and AN hose crimping equipment; the bulkhead thread accepts standard -4AN male fittings on the opposite side. Compatibility spans any application where -4AN hard-line plumbing intersects a bulk-mounted enclosure, tank, or chassis component—from street rods to full race platforms. Stock this adapter whenever you're sourcing Vibrant plumbing components to ensure your system integrity and pressure-hold performance.
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