Dual Flex Marine Mount - DF-3300 Series - DF-3304-3 Suitable for Caterpillar, Isuzu, Volvo & Yanmar engines: Cat - 3208/3304B Isuzu - QD40/60 Volvo - TMD31/TAMD31/MD32A Yanmar - 4LH Series The Dual Flex DF-3300 Series features: Heavy duty aluminum alloy construction with lip incorporated in the top of the casting to resist the upward pull of the engine. Durable oil and fuel resistant elastomer element raised above top of the casting to accommodate engine mounting angles. Low profile mount - requires only 2 7/8” minimum clearance from casting base to top of leveling nut. Fail safe design - bottom pad prevents excessive impact. Easy installation with threaded stud for vertical height and slotted casting for horizontal adjustment. Stud comes with with three nuts. Leveling, locking and secondary lock. Aluminum base cast with 1/2” slotted holes for 1/2” bolts or lag screws. All steel parts are zinc trivalent plated for corrosion resistance. Available with 3/4” stud in three size ratings dependant on engine/powertrain package weight.Engine Weights With 4 Point Mountings 750 to 1,000 lbs DF-3304-3 1,000 to 1,400 lbs DF-3306-3 1,400 to 1,600 lbs DF-3307-3