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Where is my model number?

Appliance model number Take or choose a photo of the rating plate

The label is inside the door frame or on the back of the appliance. Photos are read on your phone and never uploaded.

How we verify

Against the maker’s own list of 60 models for this part number.

1 2

Genuine OEM·GE

WD21X34778Replaces 8 older numbers

GE WD21X34778 Dishwasher Control Board - Genuine OEM

Name: GE WD21X34778 Dishwasher Control Board - Genuine OEM
Brand: GE
SKU: WD21X34778
Price: 143.09 USD
Availability: InStock

GE WD21X34778 Dishwasher Control Board - Genuine OEM

$143.09 USD

~~$180.25 USD~~ $143.09 USD

Sale Sold out

Shipping calculated at checkout.

Available to order Ships on the next business day

Electrical part — check it before you install Opening the box and holding the part against the old one does not affect your return. Once it has been installed, plugged in or tested — or the sealed anti-static bag opened — it can no longer be returned. Not sure it is the right one? Ask us first and we check it against your model and serial number the same day. Return terms

Fit checked against the maker’s own model list
Genuine OEM part, one-year warranty
365-day returns, unused and in the original box
Ships from a U.S. warehouse, tracked

Also known by these numbers

If your old part carries any of these, this is the one you want.

WD21X29518
WD21X29558
WD21X30699
WD21X30700
WD21X30701
WD21X31838
WD21X31839
WD21X31840

GE WD21X34778 is a control board for dishwasher appliances. New, genuine GE OEM — ordered from the brand's own distributor, not an aftermarket copy.

Read the number off your old part

Look for the number stamped or printed on the part itself. If it says WD21X34778, or any of the 8 older numbers listed under Compatible parts below, this is the replacement. Every one of them is discontinued and every one leads here.

Shipping box

Weight and size of the parcel as it ships: 0.82 lb · 16.2598, 4.8425, 2.4803 in. These are the carton, not the part — do not measure your old part against them.

Does it fit yours?

Enter your model number in the box above for a straight answer, or read the full list under Compatible models below. Send us the number and we will confirm it before you order.

Buying from us

One year warranty, backed by FIXIT PARTS — if it fails in the first year we replace it.
30 day returns — unused and uninstalled, in the original box.
Ships the same business day on orders placed before 12:00 PM Pacific.

Part numbers on this page

Manufacturer numbers: WD21X29518, WD21X29558, WD21X30699, WD21X30700, WD21X30701, WD21X31838, WD21X31839, WD21X31840.

Models this part fits

60 models

Fits: CDT855M5N5S5, CDT855P2N5S1, CDT875M5N5S5, CDT875M5N6S5, CDT875M5N7S5, CDT875M5N8S5, CDT875M5NBS5, CDT875P2N5S1, CDT875P2N6S1, CDT875P2N7S1, CDT875P2N8S1, CDT875P2NBS1, CDT875P3N5D1, CDT875P4N5W2, CDT875P4N6W2, CDT875P4N7W2, CDT875P4N8W2, CDT875P4NBW2, PDT775SBN5TS, PDT775SYN5FS, PDT775SYN6FS, PDT775SYN7FS, PDT775SYN8FS, PDT775SYNBFS, PDT785SBN5TS, PDT785SBN6TS, PDT785SBN7TS, PDT785SBN8TS, PDT785SBNBTS, PDT785SYN5FS, PDT785SYN6FS, PDT785SYN7FS, PDT785SYN8FS, PDT785SYNBFS, ZDT925SIN5II, ZDT925SIN6II, ZDT925SIN7II, ZDT925SIN8II, ZDT925SINBII, ZDT925SPN5SS, ZDT925SPN6SS, ZDT925SPN7SS, ZDT925SPN8SS, ZDT925SPNBSS, ZDT925SSN5SS, ZDT925SSN6SS, ZDT925SSN7SS, ZDT925SSN8SS, ZDT985SIN5II, ZDT985SIN6II, ZDT985SIN8II, ZDT985SINBII, ZDT985SPN5SS, ZDT985SPN6SS, ZDT985SPN8SS, ZDT985SPNBSS, ZDT985SSN5SS, ZDT985SSN6SS, ZDT985SSN8SS, ZDT985SSNBSS.

Also fits these brands

GE

View full details

Model cross reference

This part WD21X34778 works with all 60 models listed, all of them dishwashers.

Does this fit my appliance? Need help finding your model number?

Model number	Manufacturer	Appliance type
CDT855M5N5S5	GE	Dishwasher
CDT855P2N5S1	GE	Dishwasher
CDT875M5N5S5	GE	Dishwasher
CDT875M5N6S5	GE	Dishwasher
CDT875M5N7S5	GE	Dishwasher
CDT875M5N8S5	GE	Dishwasher
CDT875M5NBS5	GE	Dishwasher
CDT875P2N5S1	GE	Dishwasher
CDT875P2N6S1	GE	Dishwasher
CDT875P2N7S1	GE	Dishwasher
CDT875P2N8S1	GE	Dishwasher
CDT875P2NBS1	GE	Dishwasher
CDT875P3N5D1	GE	Dishwasher
CDT875P4N5W2	GE	Dishwasher
CDT875P4N6W2	GE	Dishwasher
CDT875P4N7W2	GE	Dishwasher
CDT875P4N8W2	GE	Dishwasher
CDT875P4NBW2	GE	Dishwasher
PDT775SBN5TS	GE	Dishwasher
PDT775SYN5FS	GE	Dishwasher
PDT775SYN6FS	GE	Dishwasher
PDT775SYN7FS	GE	Dishwasher
PDT775SYN8FS	GE	Dishwasher
PDT775SYNBFS	GE	Dishwasher
PDT785SBN5TS	GE	Dishwasher
PDT785SBN6TS	GE	Dishwasher
PDT785SBN7TS	GE	Dishwasher
PDT785SBN8TS	GE	Dishwasher
PDT785SBNBTS	GE	Dishwasher
PDT785SYN5FS	GE	Dishwasher
PDT785SYN6FS	GE	Dishwasher
PDT785SYN7FS	GE	Dishwasher
PDT785SYN8FS	GE	Dishwasher
PDT785SYNBFS	GE	Dishwasher
ZDT925SIN5II	GE	Dishwasher
ZDT925SIN6II	GE	Dishwasher
ZDT925SIN7II	GE	Dishwasher
ZDT925SIN8II	GE	Dishwasher
ZDT925SINBII	GE	Dishwasher
ZDT925SPN5SS	GE	Dishwasher
ZDT925SPN6SS	GE	Dishwasher
ZDT925SPN7SS	GE	Dishwasher
ZDT925SPN8SS	GE	Dishwasher
ZDT925SPNBSS	GE	Dishwasher
ZDT925SSN5SS	GE	Dishwasher
ZDT925SSN6SS	GE	Dishwasher
ZDT925SSN7SS	GE	Dishwasher
ZDT925SSN8SS	GE	Dishwasher
ZDT985SIN5II	GE	Dishwasher
ZDT985SIN6II	GE	Dishwasher
ZDT985SIN8II	GE	Dishwasher
ZDT985SINBII	GE	Dishwasher
ZDT985SPN5SS	GE	Dishwasher
ZDT985SPN6SS	GE	Dishwasher
ZDT985SPN8SS	GE	Dishwasher
ZDT985SPNBSS	GE	Dishwasher
ZDT985SSN5SS	GE	Dishwasher
ZDT985SSN6SS	GE	Dishwasher
ZDT985SSN8SS	GE	Dishwasher
ZDT985SSNBSS	GE	Dishwasher

Our record, on the marketplaces

No reviews on this part yet. Here is where we have been judged.

4.7/5 from 448 ratings on Amazon Check it yourself
99.7% positive, 4.0K items sold on eBay Check it yourself

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