Trans Line Fitting Kit 1/4 NPT Black

The Trans Line Fitting Kit 1/4 NPT Black by JIFFY-TITE is purpose-built for transmission cooler line installations and fluid transfer applications where reliability and leak-free connections are non-negotiable. Whether you're upgrading a stock transmission cooling system on a high-performance street car, installing an aftermarket cooler for track duty, or building a custom hydraulic setup, this fitting kit delivers the professional-grade connections serious engine builders and transmission specialists demand. The 1/4 NPT thread size makes this kit compatible with a wide range of transmission cooler lines, adapter blocks, and remote filter housings commonly found in both domestic and import platforms.

JIFFY-TITE fittings are engineered to withstand sustained fluid pressure and vibration without weeping or catastrophic failure—critical when coolant or transmission fluid escape can mean engine damage or total loss of hydraulic function. The black finish indicates corrosion-resistant plating suitable for engine bay environments, protecting against rust and oxidation over years of use. NPT (National Pipe Taper) threads create a mechanical seal that tightens as you turn the fitting, eliminating the need for thread sealant tape in most applications and reducing installation time. The compact, lightweight design at 0.42 lbs means zero added weight penalty while the standardized 1/4-inch connection integrates seamlessly with industry-standard cooler lines, block adapters, and manifold ports.

This kit serves mechanics, engine builders, and enthusiasts performing transmission upgrades, cooling system overhauls, or custom fluid transfer work on street cars, race vehicles, and performance trucks. Installation requires only standard wrenches and basic mechanical skill—hand-tighten the fitting, then snug with an appropriate wrench to seat the taper seal without over-torquing. Verify compatibility with your specific transmission cooler line diameter and connection port before ordering; JIFFY-TITE 1/4 NPT fittings pair with coolers and adapters featuring matching 1/4-inch NPT ports, a configuration found across most transmission cooling systems sold for domestic muscle cars, Ford and GM trucks, and high-output import platforms.