180-degree push-on hose end in AN6 (-6), pushing straight onto socketless hose and gripping the barb without a clamp or crimped socket. AN6 is the everyday size: carburettor fuel feed, EFI returns, coolant overflow and header-tank runs, PCV and light oil plumbing on most street and club-level builds. The 180-degree body sends hose straight back alongside itself, replacing a hand-formed U-bend that would otherwise kink or crowd nearby components. It offers enough bore for typical fuel and coolant duty without the bulk of the larger sizes. Ordinary rubber hose will not grip the barb correctly, so use hose specified for push-on ends.