Oil Filter Wrench - Truck & Heavy Equipment This is a oil Filter Wrench designed for oil filters 3 7/8" to 4 3/8" in diameter as found on heavy trucks and equipment. This is a new wrench in its' original clear plastic shrink wrap package. Domestic Buyers to pay $7.50 shipping. Payment must be made by check or Paypal within 10 days of auction close. Looking for a hard-to-find part for your antique vehicle? Check out my “About Me” page.