What is this plastic splashguard called, and where do I find a good replacement?

The plastic has cracked around the bolt holes. They are large contoured plastic pieces that bolt underneath the bumper in front of the front wheel. Has anyone found a good replacement for them?

 

The plastic splash guards? Welcome to the club of damaged ones. Does the dealer not sell a replacement part?

 

I had to grab the part number for a member a year or three ago. I used the system at the top of this post: https://www.tundras.com/threads/howto-use-the-toyota-parts-system-to-find-order-parts.113808/

It’s in the bullet points. After you plug in your VIN to the search system, I believe it’s under “Body” and in the body section search the page for “bumper”. if I recall.

 

Thanks for this reference! It looks like it's these parts under category "Suspension crossmember and undercover"

51443 COVER, ENGINE UNDER, REAR RH
51444 COVER, ENGINE UNDER, REAR LH

 

I've got a pair of them that aren't going back on the truck. I can snap some pictures of them if anyone is interested.

 

I removed mine. Broken cracked plastic. Never replaced them

 

Mine cracked after having driven into a wheel rolling across interstate 495 while I’m doing 70 mph. I wasn’t about to lock up my brakes with a semi on my ass and ended up hitting it doing 50.

Thankfully that splash guard helped it from going under my truck and just pushed it out of the way.