DF-4428-4 Dual Flex Marine Engine Mount


Item Number: DF-4428-4

Manufacturer Part No: DF-4428-4




The (“Dual Flex”) DF-4420 Series of heavy duty mountings is a twin stud double mount designed principally for diesel engines in excess of 2,800 lbs. up to 5,600 lbs. in weight. These mounts are generally used on the “heavy (marine transmission) end” of the engine along with DF-4400 Series mounts on the front of the engine. Durable oil and fuel resistant elastomer element. Low profile mount – requires only 3 3/8” minimum clearance from casting base to top of leveling nut. Fail safe design – bottom pad prevents excessive impact. Easy installation with full 1” threaded studs for vertical height and slotted casting for horizontal adjustment. Mounts come complete – furnished with three nuts: leveling, locking and secondary lock. Aluminum base cast with 1/2” slotted mounting holes for 1/2” bolts or lag screws on 9” centers. All steel parts are zinc plated for corrosion resistance. Available in four size ratings (shown below) dependant on engine/powertrain package weight.

DF-4425-4  Engine Weighing 2,800# to 3,600#  Do not stock
DF-4426-4  Engine Weighing 3,600# to 4,400#  Do not stock
DF-4427-4  Engine Weighing 4,400# to 5,000#  Do not stock
DF-4428-4  Engine Weighing 5,000# to 5,600#  In Stock

Additional information

Weight 7.965 lbs
Dimensions 10.75 × 3.88 × 5.63 in


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