2006 LS430 - Radiator replacement

[DomTurner]

Hi, can someone tell me where I can source a replacement radiator, part no. 422132-3836

 

I have looked on Rockauto and amayama and whilst there are radiators, none share the same part number - am I alright to use these? I know that some radiators (USDM maybe?) don't have an expansion tank to the left of the engine bay like mine.

 

I have been looking at this one https://www.rockauto.com/en/moreinfo.php?pk=4722936&cc=1432014&pt=2172&jsn=2797

Thanks.

[Razor61]

I think that is a Denso part number not a Lexus/Toyota part number.
From looking on https://lexus-europe.epc-data.com/ there are 2 x types for your car - Type A and Type B
I'd guess it's either 16400-50241 Type B or 16400-50231 Type A
From looking at the diagram the difference seems to be the type of transmission cooler built into the radiator, tubular or type with fins.
If you check on Lexus Parts Direct the radiator listed is 16400-50241 Type B with the fin type trans cooler and this fits in with pictures I've seen for a UK radiator with the trans cooler exposed. I'd work on 16400-50241 ( 'MARK' 5024 Type B ), being the correct Lexus part number.
The Denso radiator from Rock Auto has OEM part number 16400-50231 which is a Type A, I can't say if this would be ok or not but other people may be able to tell you if it is ok to use.
I hope all that helps.

[Malc1]

I’m thinking I’ve been reading past times here that there may actually be THREE potential options 🤔

and of course only one will do 

so continue to take great care !

Malc 

[Razor61]

There are 3 listed but only 2 for a 2006 LS430. If the top of the radiator has '5024' as the 'MARK' (and probably Denso number 422132-3836 on it) then there is only one option which is 16400-50241 ( 'MARK' 5024 Type B ).
That's my opinion anyway and I think the 'MARK' on the top of the old radiator is the key, assuming the correct one is fitted to the car in the first place.

[DomTurner]

1 minute ago, Razor61 said:

There are 3 listed but only 2 for a 2006 LS430. If the top of the radiator has '5024' as the 'MARK' (and probably Denso number 422132-3836 on it) then there is only one option which is 16400-50241 ( 'MARK' 5024 Type B ).
That's my opinion anyway and I think the 'MARK' on the top of the old radiator is the key, assuming the correct one is fitted the car in the first place.

Sorry I missed out that info! The MARK is '5024', so https://lexuspartsdirect.co.uk/product/lexus-ls-phase-3-radiator-mark-5024/ 16400-50241 ( 'MARK' 5024 Type B ) looks like the best bet.

 

Thanks everyone for your help!