-04 AN Fitting - 5.5mm Tube Nut

Building custom fuel, oil, coolant or brake plumbing on your 1988-1998 Chevy/GMC C/K (OBS/GMT400) truck? This ColorFittings AN fitting works on 2WD C-series and 4WD K-series 1500, 2500 and 3500 pickups, plus GMT400 Suburban, Tahoe and Yukon builds.

Metric 5.5mm tube nut for use with 5.5mm aluminum hardline. Pairs with the matching 5.5mm Tube Sleeve.

Specs: -04 AN thread, for 5.5mm hardline tubing. Use the correct assembly tools (Plastic Vice Jaws) to preserve the anodized finish.

Details

• Brand: ColorFittings
• Part type: AN fitting
• Part number: CF-HTN-04-055-000-BL
• Material: 6061-T6 billet aluminum, anodized finish

Fitment

• 1988-1998 Chevrolet C/K1500, C/K2500 & C/K3500 pickups (2WD and 4WD)
• 1988-1998 GMC Sierra C/K1500, C/K2500 & C/K3500 pickups (2WD and 4WD)
• GMT400 Suburban, Tahoe & Yukon builds

Fitment notes: This is a universal plumbing part, not a direct-fit factory replacement. Match the AN size and thread to your hose, line and component before ordering.

FAQ

Does it fit a 2WD (C) or 4WD (K) truck?
Both. AN plumbing parts are universal, so they fit any OBS C or K truck when the size and thread match your setup.

Is it in stock?
This part ships direct from ColorFittings. If it is out of stock, the listing shows Sold Out.

Not sure which size you need?
Call, text or email us with your engine, fuel or oil setup and the line size, and we will help you pick the right part.