MDB421RHS1 Frigidaire Dishwasher - Instructions

1-2-3 snapped off the old and snapped on the new! New part was just as ordered and just like original! My dishwasher is like new again! Thanks PartSelect for your great price and prompt shipment!

Ordered the parts, put into place and that was it...very easy...had to undo the upper rack spinner wash blade but was easy to remove and put back onto the new rack...

After getting a totally incorrect length of hose from partselect.com . Went to local hardware store and bought hose for $3.00 vs $20.99 + $10 shipping!
Partselect sent replacement hose of 24 1/4” vs the original hose of 27”. Good luck getting any response from them once they have your money!

First point of leakage was the door. Turns out that a gasket at the bottom of the door functions as a wave trap. As the bottom sprayer spins it sprays against the door and creates a small wave of water this gasket was starting to disintegrate, it was letting water surge over the small tray at the doors bottom. Easy to replace just pull down and remove press fit on inside door bottom. Only when this was replaced did I find the real leak but not until I guessed at the tub seal as the leak. Very hard to see where the water really comes from! Turns out it was not the tub seal but a clip that holds the heater element got smashed down from a dropped dish rack at some earlier time and this caused the heat to increase at the clip and eventually heat the clip to extent it melted the tub directly under it. JB Weld to the rescue and we have a waterproof tub again. Well almost! The tub gasket resisted my best efforts to seat correctly and thus required a new tub gasket, still hard to seat but after 2-3 attempts we have a winner. Total cost about 50 bucks vs. 6-700 for a new unit. Wife is happy!!

The Inlet valve was leaking. I removed the old valve in less than 30 min.Note: need bright flashlight! It could have been quicker but I had to lie on the floor and squeeze my big hands under the opening (kick panel). Once I got the two small bolts out, I was able to manipulate the valve out from under the dishwasher, then I carefully removed the two lines. I received the part in 5 days and installed it in 45 minutes. It could have been a faster installation, however I was not about to pull out the whole dishwasher. Again, I was able to manipulate the new valve back in & tighten then test everything.(note: need a bright flashlight to see underneath) I immediately ran a load of dishes and Presto! No leaks and runs like a Swiss watch!

Easy as pie. Just turned off water and electricity. Disconnected hoses and wires and replaced with the new valve.

I removed the kick panel at the bottom front of the dishwasher. Then using a flashlight and a cross point screwdriver, I removed the thermostat from about the middle left. It requires a short screwdriver, but not quite as short as a stubby. I unplugged the wires, noting that one of them was a little burnt looking. The burnt looking connector was still okay. I then installed the new one, with the green dot on the thermostat having the slightly burnt looking connector. Then I ran a load of dishes and the dishwasher worked as it was supposed to. It has worked okay twice since then.

After moving the dishwasher out from the cabinetry, I removed the screws holding the pump in place. Pulling the pump from the formed plastic opening, I found a toothpick lodged in the pump housing. At the same time I noticed that the front o-ring was deformed due to being the incorrect size (too large). It was installed at the factory this way.

I went online to search for new parts. PartSelect was the second or third listing on the search page. I submitted the dishwasher model number and was taken to a set of parts illustrations. I was easily able to find the o-rings I needed.

It was super simple. I popped the clips that were holding the old spray arm on and then popped the new one in place.

I read the instructions that others had posted and completed the repair in less than 5 minutes!

Pulled old gasket off with small hook. Replaced new gasket by pressing in with my fingers.

Slid the old rack out, removed the silverware basket and put in new rack, and slid the new rack in. Had to use the pliers to attach a wheel that came off during shipping.

if the wire they snap on was bent it needs to be straightend.......they just snap on. easy to install but wish they had better wheels so this problem would be solved. My 2 sons have same brand dishwashers and have same problem.

Easy fix but not cheap
replaced drain trap and four rack wheels with clips

All parts were expensive for the items.
found cheaper wheels w/clips for much less on another site.

First, I was so pleased to find these parts at such reasonable prices! Sure beats replacing a dishwasher in terms of money and labor. I'd already studied the online instructions a couple times before ordering and checked to make sure my racks dis-assembled as shown. They did, I ordered, got the new racks within days and installed both in under ten minutes. Great service and awesome installation videos. I will definitely check this site if I need replacement parts for anything else in the future. THANKS so much!