Stock photo — may not be the exact part. Verify by part number before ordering.LG MDS42399709 Sound Insulation – Multi V III outdoor unit
An interchangeable part may be available. See the options below and check them against your unit.
Not sure it's the right part? Check it against your unit or send us the model and serial — help@totalhvacparts.com or 302-219-4994.
Overview
LG MDS42399709 is the genuine LG sound insulation for LG Multi V III outdoor units. LG lists it for 13 models across Multi V III outdoor units, including ARUB072BT3, ARUB072DT3 and ARUB096BT3. LG lists MDS42399720 as a substitute for MDS42399709; this is a one-way substitute, not a two-way interchange.
Check the model number on your unit's rating plate against the fit list on this page before ordering.
Fits These LG Units
LG lists MDS42399709 for the models below. Enter your model and serial in the fit checker to confirm against LG's service notices.
ARUB models
ARUN models
Specifications
After You Order
Order number and confirmation by email the moment you check out.
Available to order — lead time may apply. We email you the ship date once it's confirmed; contact us first if timing matters.
Tracking number lands in your inbox the moment it leaves the building.
Check the part number on the label against your order before installing. Wrong or damaged? Tell us — we'll sort it out.
Ask the Parts Desk
Not sure this fits? Need more than what's in stock? Send the model and serial from the unit's data plate — a real person reads it and confirms before you order.
Common Questions
What LG models does MDS42399709 fit?
LG lists MDS42399709 for: ARUB072BT3, ARUB072DT3, ARUB096BT3, ARUB096DT3, ARUB121BT3, ARUB144BT3, ARUB144DT3, ARUN072BT3, ARUN072DT3, ARUN096BT3, ARUN096DT3, ARUN100LT3, ARUN144DT3. Use the fit checker on this page with your model and serial to confirm against LG's service notices.
Is the stock number on this page real?
Right now neither LG nor our warehouse shows MDS42399709 on hand. You can still order it — lead time may apply; contact us to confirm a date, or check the interchangeable numbers listed above.
Is this a genuine LG part, or aftermarket?
Genuine LG OEM equipment sourced through LG's authorized parts program — not an aftermarket substitute.
How do I confirm this fits my unit?
Match part number MDS42399709 to your unit's parts diagram. If unsure, send us your model and serial number and we'll verify before you order.
What's the warranty on this part?
Warranty terms vary by manufacturer. Contact us with your order number for details specific to this part.
How fast does this ship?
MDS42399709 isn't on hand right now — it's available to order and lead time may apply. Contact us to confirm the ship date before you order.
Does everything ship UPS or FedEx Ground?
Most orders ship UPS or FedEx Ground. A small number of large or heavy parts across the catalog ship by truck freight instead, and we reach out to arrange a delivery window before those orders leave the warehouse. Oversized items that ship by truck freight are also covered by free standard shipping on orders of $50 or more.
Enter the model number from your unit's data tag. Add the serial number too and we'll check it against LG's service notices for this part.