2 FLEETGUARD FF5613 (Rocky Mountain 2 Pack) Overall Height 150.11 mm (5.91 in) Largest OD 77.47 mm (3.05 in) Thread Size 7/8-14 UNF-2B Light Duty Automotive Diesel Engines. Same as FF5587, but different micron rating. * Sent by Rocky Mountain Truck and Trailer *