For those who may need to change their engine under cover / splash shield:

Part number 5141053080 (51410-53080) was replaced by 5141053081 (51410-53081). Some dealership sites state that the 5141053081 part number will not fit the 08-09 IS F, but this is not the case. It will definitely fit the 08 IS F. The nice thing is that the -081 part number is quite a bit cheaper than the -080 part.

Some photos for comparison sake:

 

Years later this post came in helpful😎 mine is trashed and needs replacing

 

FYI, I bought the -81 updated unit and transferred the sound deadening material to it from the old one. Not hard at all.

 

Good to know, I noticed the material on the -80 version and didn't know if it was transferable easily to the -81 updated version

 

I forgot that I had even posted this, glad it helped someone out!

 

Yes I definitely shattered my original one early on its life...

Dont remember when, but I was still able to get the original 80 unit in 2 tries..
(First one arrived with a missing corner at the dealership)

After a few years of sitting in my garage, I finally installed it last year.
I had a nice clean photo of it when I did my LCA's thanks to @lobuxracer ...

But I can't find it anymore..

Joe Z

 

@MileHIFcar I replaced my existing (assumed original) with 51410-53081 last month. There was no sound deadening material as shown in the -80 photo above on either. No way for me to tell if it was removed from existing at some point. Curious to see what you find with yours.

 

I'll let you know, I'm supposed to get delivery this Friday