Bocatrip

John, after I noticed part of the bottom cover was torn off, some of the front screws are missing as well. Should I be ordering every screw and anchor from Lexus (about 69-76cents each or just the few that are missing and have the indy improvise where it is necessary? Most of the screws are on but as you mentioned are not tight. I'm getting the aftermarket cover which doesn't supply any screws. I'm just not sure what I will need. This is probably a good job for a body shop as they usually have everything necessary when assembling these items. What do you suggest?

Tom57

I have that replacement front lower engine shield on my '01. It's a perfect replacement. Note: the engine shield for the '01 - '03 and '04 - '06 are different and different part #s.

Bocatrip

Thanks Tom. Yes I am aware of the different part numbers for my 01 and for a 04=06. Reviews mentioned kind of flimsy, but saving $200 from OEM has to have some draw backs. OEM is not all that strong either. Just as long as it stays on and doesn't fly off in the wind or get torn off in a car wash.Where did you get yours? . There are a few vendors. Price is $72 with shipping.

Tom57

I got mine a few years ago from RockAuto. I checked for you and see that they're out of stock on it. I seem to recall paying around $30.

Bocatrip

Might have been a few years ago for you. Lowest price I could find with shipping is $72. I found one online site called Carid.com with a low price of $39.00 but they only had one in stock and tons of negative reviews. Never heard of them. I'd rather go with a higher ebay rating or somewhere that is known. I checked Rock Auto and they were out of stock. Thanks again. I'll be ordering one soon from one of these sites. Lexus is stupid with their prices!!!

Bocatrip

I found a great price with Advance Auto parts only to find after I placed the order for a used part from a used car! Gheeze.. who buys an aftermarket lower engine cover that is used? . I of course cancelled the order asap and am still waiting for confirmation. I followed up by ordering the part from Go-Parts. Price was $71.20. A lot better than $250+ from Lexus.

Johnhav430

I think you'd be ok just using what's there, and replace what's missing, and having the indie let you know if any were not usable....I went crazy and ordered all of them a year ago, and am having a hard time finding what diagram I would have used to identify them all...funny I have qty 11 of those screws that hold the air intake down, and I reused the ones that were there even though the ends have flared out making them hard to reinsert. Probably all goes back to working in a restaurant when I was 16!

edit

wait a sec this may show everything, and be why I have two types of screws and also u clips, just click on the diagram to expand, then scroll down...

https://www.lexussouthatlantaparts.c...144150090.html

The yellow grommets are these

https://www.lexuspartsnow.com/parts/lexus-grommet-screw~90189-06066.html?Make=Lexus&Model=LS430&Year=2006&Submodel=&Filter=()

I believe these are one kind of screws

https://www.lexuspartsnow.com/parts/lexus-screw-w-washer-tapp~90159-60477.html?Make=Lexus&Model=LS430&Year=2006&Submodel=&Filter=()

the other screws are

https://www.lexuspartsnow.com/parts/...159-60507.html

I also have

https://www.lexuspartsnow.com/parts/lexus-nut~90179-05060.html?Make=Lexus&Model=LS430&Year=2006&Submodel=&Filter=()

2KHarrier

The other (cheaper) option is to head on over to Home Depot/Lowe's/Menards, etc. and buy a metric hardware kit or take one bolt along and match it up with something you find. Usually about 10-15 cents a piece. Dab a little grease on the end of it and thread it in place. Easy Peazy.,.

Johnhav430

Definitely a good idea....nobody would ever even see these screws.....I have definitely found a bolt to use to pull out a rotor this way and did exactly this with my Maxima where I really didn't care anymore if it were original or something that simply worked...

Bocatrip

Thanks John and 2KHarrier. Lexus gave me an expanded view of the lower cover with all the screw part numbers and bolts which John has provided above. Just not sure other than the front row what additionally I might need. Lexus also ordered me (5) 90159-60507 which looks like it goes on the back sides of the cover. The missing screws are on the front so he made a mistake there. Also ordered (2) 90179-05060 which might be those clip bolts that have a tendency to fall off. I told him to order me the cover which of course is going back (at $250). What bothers me is 2 things.....1) if the new cover is as flimsy as mentioned, what will keep it on going through a car wash and even traveling at higher speeds? 2) Do I now have to keep an eye on the tech every time they change my oil or other front end work so that they don't keep losing the screws? I don't believe the new cover has access to the oil filter, so the entire cover must come off.

2KHarrier

First of all, you're welcome!
And to answer the concerns...

1) Nothing more than what was originally there, unless you install OD washers under the fastener heads. That would give you a little more purchase on the cover, VS. just the head of the fastener against the cover. (call it peace of mind)

2) Yes (consider it a new hobby...)

Gronemus

I'm not sure what your concern about the car wash is about? The underbody spray that I get during the winter time isn't going to hurt that cover at all and I have yet to find a car wash around here that has a rotating brush that cleans the underbody.

I always remove the cover when I do my oil changes. Using a cordless driver makes easy work of it and it allows me to get a better view of anything that might be amiss down there. You could always carry a few extra screws with you and mention this to the tech who does your oil changes. I think a gentle reminder at the beginning of the oil change that you expect all of the fasteners to end up back on the car is probably in order...

Bocatrip

Good Pointers Gronemus....With regards to the car wash...You have no idea how aggressive the automatic car washes are here. I've had bumper damage from the brushes and the pulling of the cars and banging into the rails is another story. Yes, the spraying underneath is quite strong as well if the cover is not fastened as it should (which might have been the problem to begin with). I do happen to mention to all my techs regardless of what they do to be cautious and that's why many of them know I'm a royal pain! Regardless I always reach into my pocket beforehand to help with the outcome. As you guys can see, I am over the top OCD with all my cars, but can't help it. I guess the person who gets the benefit of my efforts is the next owner in line when I sell. (whenever that might be). Thanks again for all the valuable advice on such a trivial subject! lol When I pick up the screws and bolts ordered from Lexus, I am planning on going to Home Depot to try to match them and have them around just in case......
.

2KHarrier

My wise Grandfather once said many, many years ago; "Ask a question and you're a fool for 5 minutes, never ask and you're a fool for life".

I would not call this a "trivial" subject. Look at the responses and input it's garnered.

Nope, not trivial...

Bocatrip

Nice way to say that I'm not the only nut! Thanks again for the encouragement.