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Old Sep 28, 2020 | 12:00 PM
  #16  
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Originally Posted by MikeFig82
It's pretty much the same as the standard intake pipes out there. Joe Z, HPS. ....
Understood,thanks. MikeFig82. Was interested if perhaps a member had installed it and can confirm fitment in 2008 - 2012 model year IS 350.
K&N lists 69-8704TP, for 2013-2019 IS350. No reference of installing in 08-2012 IS 350.
I've since followed up and inquired with K&N for confirmation. The following reply was received;
"Thank you for your email. The correct kit for the 2008 Lexus IS350 3.5L is part number: 69-8701TP https://www.knfilters.com/69-8701tp-...-intake-system It is not recommended to install a kit that is not fit tested for your application"
Somewhat vague reply, which neither confirmed if it would / would not fit 08 - 2012 IS 350. May be it does fit however, K&N did not do any extensive dyno testing to confirm any benefits over the 2008.
Interesting K&N didn't test fit item in the 2008 - 2012 model years, but did include the 2013 model year.
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Old Sep 28, 2020 | 12:13 PM
  #17  
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Originally Posted by ELexis
Understood,thanks. MikeFig82. Was interested if item was installed without any fitment issues in 2008 - 2013 IS 350.
K&N lists 69-8704TP, for 2013-19 IS350. No reference of installing in 08-2012 IS 350.
I've since followed up and inquired with K&N for confirmation. The following reply was received;
"Thank you for your email. The correct kit for the 2008 Lexus IS350 3.5L is part number: 69-8701TP https://www.knfilters.com/69-8701tp-...-intake-system
It is not recommended to install a kit that is not fit tested for your application"
Somewhat vague reply, which neither confirmed if it would / would not fit 08 - 2012 IS 350. May be it does fit however, K&N did not do any extensive dyno testing to confirm any benefits over the 2008.
Odd K&N didn't test fit item in the 2008 - 2012 model years, but did include the 2013 model year.
Regarding this kit from post#14 since it's for the 3rd gen IS. One of the clamps, and silicone sleeve may not work. I encountered this when purchasing my HPS intake kit. The sleeve for the aibox top is 3.125". Which for the 2nd gen IS the diameter is 3.00"

If you have a 350 you could probably reverse them. Meaning put the larger sleeve on the throttle body. Since the 350 has a larger one compared to the 250. AFAIK some members have mentioned that it's difficult trying to put the 3.00" sleeve on.

Edit: The description of the sleeves qty 2 is 3.125" to 3.00". So one side could be used. As for the other you'll need a 3.00" to 3.00". This will ensure it fits correctly on the air box top.

Last edited by MikeFig82; Sep 28, 2020 at 12:19 PM.
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Old Sep 28, 2020 | 12:47 PM
  #18  
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Originally Posted by MikeFig82
Regarding this kit from post#14 since it's for the 3rd gen IS. One of the clamps, and silicone sleeve may not work. I encountered this when purchasing my HPS intake kit. The sleeve for the aibox top is 3.125". Which for the 2nd gen IS the diameter is 3.00"

If you have a 350 you could probably reverse them. Meaning put the larger sleeve on the throttle body. Since the 350 has a larger one compared to the 250. AFAIK some members have mentioned that it's difficult trying to put the 3.00" sleeve on.

Edit: The description of the sleeves qty 2 is 3.125" to 3.00". So one side could be used. As for the other you'll need a 3.00" to 3.00". This will ensure it fits correctly on the air box top.
Appreciate you following up and providing the additional information with regard to silicone sleeve sizing information being overlooked as possible difference, thank you! K&N part # 69-8701TP, does state; Hose; 3”ID-3-1/8”x2”L
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