1/8″ NPT to 4mm Barb

This TightFit 1/8″ NPT to 4mm Barb adapter is CNC machined from billet aluminium and finished in bright polished black anodising. It’s a barbed adapter for clamp-on rubber or silicone hose, suited to coolant, vacuum, breather and fuel lines. Like every TightFit fitting, it’s manufactured to strict tolerance control and backed by our 2-year limited warranty.