-12AN Cap / Blockoff

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 Caps seal the female flare end of an AN fitting, hose end, or distribution block for clean, professional plumbing setups. CNC-machined 6061-T6 billet aluminum, anodized finish.

Compatible with E85, ethanol-based fuels, race fuel, gasoline, oil, and coolant.

Details

• Brand: ColorFittings
• Part type: AN plug / cap
• Part number: CF-FCO-12-000-000-BL (varies by option)
• Material: 6061-T6 billet aluminum, anodized finish

Choosing a color

This listing comes in 3 anodized colors: Black, Gold, Purple. The function and fit are the same in every color.

Which should I pick?

• Match the color to your other fittings for a clean, factory-look engine bay.
• Black or silver for a subtle look; red, blue or purple to make the plumbing stand out.

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.