-12AN Flare Blockoff Plug

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

ColorFittings AN Flare Block Off Plugs are precision CNC-machined to securely seal unused AN ports in fuel, oil, coolant, brake, and power steering systems. True 37-degree AN flare seat for a tight, leak-free seal.

Compatible with E85, ethanol-based fuels, race fuel, gasoline, oil, coolant, and air systems. Machined from 6061-T6 billet aluminum, anodized finish.

Details

• Brand: ColorFittings
• Part type: AN plug / cap
• Part number: CF-FBP-12-000-000-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.