The Snow Performance windshield washer reservoir bung includes an integrated -4AN nipple to provide an AN-style connection for washer fluid lines. It’s specified as a reservoir bung accessory intended to accept a -4AN hose fitting for routing washer fluid to auxiliary or upgraded systems. This fitting is a simple fabrication component for adapting washer reservoir plumbing to -4AN hose or fittings where such a connection is required.
Snow Performance Windshield Washer Reservoir Bung w/ -4AN Nipple