Velvac 600244 Anti-Siphon Tube for 2-1/4 Inch Filler Neck Freightliner

The Velvac 600244 Anti-Siphon Tube is engineered to protect heavy-duty truck fuel tanks from theft by making fuel siphoning through the filler neck impossible. Designed specifically for heavy-duty Freightliner trucks with 2-1/4 inch diameter filler necks, this device features a patented aluminum extrusion design that prevents unauthorized fuel removal.

Key Features:

• Constructed from durable 6061 aircraft-grade aluminum tubing with 0.065 inch wall thickness
• Vented design allows normal fueling at rates of 20+ gallons per minute
• Measures 7 inches in length with 2-3/4 inches from underside of top lip to last barb
• Locking barb design prevents removal once installed—permanent anti-theft protection
• OEM-approved design compatible with most heavy-duty filler necks
• Fast and easy installation with no special tools required

This anti-siphon tube locks securely onto the filler neck wall during installation and cannot be removed, providing permanent fuel theft protection for commercial fleets and owner-operators. The tube's vented construction ensures it won't interfere with normal fueling operations while completely blocking siphon hoses.