Dorman 600-399 Front Differential Lock Actuator Compatible with Select Dodge / Ram Models

Just compared this aftermarket part to defective OEM and they look almost identical and quality looks identical. Install took maybe 5 minutes and part works as expected. I will continue to purchase Dorman parts over OEM because of cost saving and similarity of build quality.

Update: Ram 2020 Limited 1500. Updating in order to be fair, Actuator was not the issue. I had an Electrical issue, therefore the actuator was not getting power. Actuator fit perfectly and worked fine. Did not work out of the box. Hooked it up and was checking it before I installed and it did not work. I checked the plug and all 4 wires are good, ground is good and etc. It is getting all the signals it should get but still nothing.

Product worked fine on the bench when connected to a 12v 700a battery but was extremely difficult to stroke by hand. Once I got it on my truck it failed to stroke when it would receive an electrical signal and again I could barely move it by hand. I’m assuming the spring is far too strong for the power in the circuit. Called tech support and they were worthless just said to return it. I cleaned up the old oem one and it worked like a charm.

Cured my 4wd flashing light on 2019 Ram 1500. Easy replacement - jacked up passenger tire and put jack stand under. Loosen the wire harness clamp first one back from plug (the lock tab is on top, so don't even mess with this until you remove unit). By jacking I also only lost about a tbsp of oil. Push the plug end up and angle toward top of passenger tire. Wiggle a little and it will come out. Now clean with brake cleaner or other and release lock tab and unplug. From here just reverse.

Fixed my 4WD problems in my truck! Shifts are much faster and smoother than before. Direct OEM replacement part and everything works perfectly now.

I bought this for my 2011 ram 1500 it’s a perfect fit and works well

Item fit and worked just fine. The packaging was virtually non-existent. The part came loose in a cardboard box with no protective wrapping foam or anything of the sort. It had poked through the side of the box but fortunately nothing appeared to be damaged. It is much lighter duty than the OEM part. Fortunately it's only a half hour or so change, so if this one fails I'll go with a more sturdy one next time. In in

Easy to replace and fits perfect. When replacing this item I found it best to only jack up the passenger side of the vehicle so that the oil in the axle shifts to the driver side and you don’t lose very much gear oil when removing the old one.Unfortunately my issue was with the transfer case actuator/shifter so I replaced both and it cured my problem of the 4x4 system trying to engage on its own.

Perfect fit and works great. No issues. Dorman makes high quality parts! 2014 Ram 1500

Stop working after exactly 2 use twice 😡😡😡 i want my money back!!!!!!

Se lo instale una semana despues de que me llego, el mecanico me advirtio q esta pieza era china y q no garantiazba el funcionamiento. Aun asi le dije que la instalara bajo mi riesgo, pues bien despues de menos de un mes dejo de funcionar. Ahora tengo que comprar la refaccion original marca mopar, q cuesta el doble y tengo que pagar mano de obra extra. No lo recomiento.

Perfect fit! Right now I'm always driving in 4W Auto and I never feel it engage. Works great.

This worked for my 2015 dodge ram with no error codes coming up on dash unlike some other aftermarket ones. Way cheaper then oem .