Leak Defender® for Macks



2-Piece Fuel Neck Repair/Replacement System, Collar & Cap, Which Replaces Your Old, Worn Fuel Neck & Stops Fuel Cap Leaks on Mack Trucks w/ a 3″ Fuel Filler Neck. 100% Money Back Guaranteed!

NOTE: Sold Individually, Not as a Pair. Fits on Mack Trucks w/ 3″ Fuel Filler Neck (Approx. 2010 & Newer). If You Have an Older Mack w/ a 3.5″ Fuel Filler Neck (Approx. 2009 & Older), Purchase the Leak Defender® for Internationals.