Replacement Single 4220 Acme Screw Jack for Truck Camper System, 360-Degree Manual Override Cranking, Plated and Powder-Coated Tube, Precision CAD Design - 736514

The replacement leg is just like the others. Easy to install.

Bought this to replace a 2002 Hapijac 4150 that failed. It did the trick, though I did need to file one of the mounting pieces on my camper since the lower bolt hole seems to be ever-so-slightly further from the upper bolts than the original. The manufacturer was helpful in selecting this replacement and sending specs. I wish they had included a top cap and a bolt. Overall, a solid replacement.

These jacks were a perfect fit to replace my older 4500 series they seem a little sturdier than the older ones they’re just a little pricey, but I’d rather spend the money and have confidence having a good product ,

Happijac is greedy jack. Two of my happijac bevel gears broke after 5 uses. Why? Because the bevel gears are built out of cheap alloy and designed to break so Happijac, the company, can get more money out of you after you buy their lousy, but expensive jacks. In business this is called “Planned Obsolescence.” Companies that make low quality products count on this business practice to generate more revenue from you for the same low-quality product. Companies that make quality products count on "Repeat Sales.” Happijac wants more than $50 for each set of replacement gears – what a rip off. Keep in mind that if these gears were any less capable they might break lifting your casket that you’d probably end up in if you trust these cheap components to hold your heavy camper above your head. Do us all a favor and stay away from this greedy company that only cares about taking your money. I spoke to tech support, warranty, parts, and sales. Nobody at Happijac would budge and help me out with the broken gears. They didn’t care that I only used the jacks 5 times. The only recourse offered was to buy new jacks or throw more good money after bad and give them another $100 for two sets of gears. No thanks. I learned my lesson the hard way. You can repeat the mistake or learn from my mistake. Don’t buy!

I had an old 4500 that died, this is a perfect replacement, lifts a bit more and is an exact replacement. It has a silver foot instead of the black one my old one had. I moved the motor over from the 4500 and bam, was up and running in minutes.

Seems to work fine and hold. It's a replacement for a smaller 33 year old jack. Much tougher to screw than the other replacement on the other side of camper.

Fit well but expensive

will b buyin a 2nd one soon

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I would have no issues ordering again. Arrived earlier than I was expecting.

Easy to install.

The jack itself needs to add one more mounting stud at the bottom for older campers.