IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Is 300h rear stillen diffuser.

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Old Jul 31, 2017 | 02:01 PM
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Default Is 300h rear stillen diffuser.

Hi. Will the stillen rear diffuser fit my is 300h fsport 2014? Do I need to remove the original diffuser, or is it bolt on? If not. Can I use the original is 350 diffuser?
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Old Jul 31, 2017 | 02:11 PM
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Originally Posted by LexusFspor
Hi. Will the stillen rear diffuser fit my is 300h fsport 2014? Do I need to remove the original diffuser, or is it bolt on? If not. Can I use the original is 350 diffuser?
Yes, it will fit. It's 3m double sided tape. Just clean your stock diffuser well and put it over with the stillen rear diffuser
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Old Jul 31, 2017 | 02:51 PM
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Curious any pics of this ?

I wanna see if my exhaust tips (fsport) will still sit flush with the diffuser. Or would I need to wield on extensions ?
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Old Aug 1, 2017 | 09:43 AM
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Originally Posted by EMOgs3
Yes, it will fit. It's 3m double sided tape. Just clean your stock diffuser well and put it over with the stillen rear diffuser
But the is300h diffuser has some curves. I don't need to cut of anything?
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Old Aug 1, 2017 | 10:59 AM
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no it will not fit a IS300h diffuser!
guys IS300h is different than IS300
OP has IS300h from different country, i.e. Hybrid variant

To the OP, The Stillen goes on top of the stock one. In your case if you have a IS300h, you will need a diffuser from IS250/350/200t etc and then install the Stillen on top of it. You'll probably also need to change your mufflers out so it does not look odd with the muffler tip cutouts with nothing sticking out of them.
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Old Aug 1, 2017 | 02:49 PM
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Originally Posted by specONE
no it will not fit a IS300h diffuser!
guys IS300h is different than IS300
OP has IS300h from different country, i.e. Hybrid variant

To the OP, The Stillen goes on top of the stock one. In your case if you have a IS300h, you will need a diffuser from IS250/350/200t etc and then install the Stillen on top of it. You'll probably also need to change your mufflers out so it does not look odd with the muffler tip cutouts with nothing sticking out of them.
ok. But what is the lexus part number for the is 350 original diffuser?
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Old Aug 1, 2017 | 04:15 PM
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Originally Posted by specONE
no it will not fit a IS300h diffuser!
guys IS300h is different than IS300
OP has IS300h from different country, i.e. Hybrid variant

To the OP, The Stillen goes on top of the stock one. In your case if you have a IS300h, you will need a diffuser from IS250/350/200t etc and then install the Stillen on top of it. You'll probably also need to change your mufflers out so it does not look odd with the muffler tip cutouts with nothing sticking out of them.
oppss thanks rodney 😂
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Old Aug 1, 2017 | 05:47 PM
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Originally Posted by LexusFspor
ok. But what is the lexus part number for the is 350 original diffuser?
USDM part number 52169-53010

But in your case you may just want to find a use scratched up one since you will be fully covering it up and just using it as a base for the stillen one to mount onto.
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Old Aug 3, 2017 | 05:49 PM
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the 300H diffuser is not bad with those curve compared to the vanilla 300 diffuser haha.
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Old Aug 3, 2017 | 10:27 PM
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Originally Posted by minhael
the 300H diffuser is not bad with those curve compared to the vanilla 300 diffuser haha.
only problem, no muffler tip cutouts.
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Old Aug 28, 2017 | 02:46 AM
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From: Hedemark
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Originally Posted by nathantse
Curious any pics of this ?

I wanna see if my exhaust tips (fsport) will still sit flush with the diffuser. Or would I need to wield on extensions ?
I have changed the diffuser on my is300h. Exhaust is spot on for new exhaust tips😁





Last edited by LexusFspor; Aug 28, 2017 at 02:54 AM.
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