SKU: FRG481672-BL
UPC: 822320016451
MPN: 481672-BL
The #6 X 1/4 NPS Trans Fitting For 4L80E Trans from FRAGOLA is a precision adapter engineered for GM 4L80E transmission builders, engine swappers, and serious performance enthusiasts who demand reliability in high-pressure hydraulic circuits. This straight adapter bridges a 6 AN male port to a 1/4 inch NPT male thread, solving a critical compatibility gap when integrating aftermarket fuel systems, transmission coolers, or custom oil lines into vehicles running the legendary 4L80E four-speed automatic transmission. Whether you're building a restomod, converting a carburetor engine to fuel injection, or upgrading transmission cooling, this fitting ensures leak-free connections where OEM options fall short.
Machined from aluminum and finished in durable black anodizing, the #6 X 1/4 NPS Trans Fitting delivers corrosion resistance and a professional appearance in underhood environments. The 6 AN (size #6) specification accommodates robust flow rates for transmission cooler circuits and auxiliary oil systems without restriction, while the straight design minimizes turbulence and pressure loss—critical factors when managing the 4L80E's cooling demands at sustained high RPM. Black anodized aluminum resists oxidation while remaining lightweight, an ideal choice for custom applications where weight and reliability matter equally. The compact 1.25 x 0.85 x 4.05 inch footprint fits tight engine bays and transmission tunnels typical of retrofit and swap scenarios.
Builders and mechanics specializing in 4L80E conversions—whether in classic Chevrolets, Camaros, or light trucks—recognize FRAGOLA fittings as the standard for durability and leak-free sealing. This adapter is essential when custom hose runs or external transmission cooler setups require a transition between AN-port components and NPT-threaded accessories. Installation requires hand-tightening the 6 AN male connector and applying appropriate thread sealant (PTFE tape or pipe dope recommended for NPT connections) to the 1/4 inch male port before torquing into your cooler, filter adapter, or auxiliary circuit port. Verify your 4L80E transmission's port configuration and fluid capacity requirements before plumbing to ensure correct circuit routing and pressure relief compatibility.
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