Sure raw power is great, but your truck does have to get you back home again too. PPE offers this optional Heavy Duty Serpentine Belt for the Dual Fueler because it lasts up to 3 times longer than a comparable stock unit. It lasts longer because it was designed to handle the big horsepower and torque numbers that modified engines produce under demanding conditions. Diesel owners expect their trucks to do it all from towing to racing and still come through unscathed. With PPEs Heavy Duty Serpentine Belt for the Duel Fueler, that means fun all day and the peace of mind of knowing that the fun will continue to the next day worry free.