# Change 2016 RX350 spark plugs?

**URL:** <https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867>\
**Category:** Maintenance/Repairs\
**Tags:** rx-350, lexus\
**Created:** [May 17, 2021, 8:18am UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867 "2021-05-17T08:18:32Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Robert-Gift](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/robert-gift/32/356_2.png) [@Robert-Gift](https://community.cartalk.com/u/Robert-Gift)\
**Post date:** [May 17, 2021, 8:18am UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/1 "2021-05-17T08:18:32Z")

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Running well so far. 160k miles.  
If change, recommended spark plugs?  
Thank you.

Addendum:  
Now open, Lexu$ dealer says $782 to replace the spark plugs.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [May 17, 2021, 8:57am UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/2 "2021-05-17T08:57:06Z")

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Use the exact brand brand and heat range as specified by the manufacture. I suspect you are well past the recommended change interval.

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**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\
**Post date:** [May 17, 2021, 11:47am UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/3 "2021-05-17T11:47:14Z")

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And I bet the plugs to use are in your owner’s manual.

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**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\
**Post date:** [May 17, 2021, 12:30pm UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/4 "2021-05-17T12:30:30Z")

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> [@Robert-Gift](#):
>
> If change, recommended spark plugs?

Check your owners manual.

Toyota uses only Denso or NGK plugs (or both). I wouldn’t get any other plug but one of those two.

The 3 rear plugs are a royal pain to reach. You need to remove several parts just to reach them. Are you sure you have the skills to do this? Based on your other posts - I seriously doubt it.

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**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\
**Post date:** [May 17, 2021, 12:37pm UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/5 "2021-05-17T12:37:03Z")

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1. That’s not really a question.

2. Per the servicing/warranty guide. You should replace the spark plugs every 72 months or 60k miles. [https://drivers.lexus.com/t3Portal/document/omms-s/L-MMS-16RX350/pdf/L-MMS-16RX350.pdf](https://drivers.lexus.com/t3Portal/document/omms-s/L-MMS-16RX350/pdf/L-MMS-16RX350.pdf)

3. You’ll probably want to go with the DENSO 4705

If you haven’t replaced them yet, then you’ve grossly exceeded the specified interval.

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<div class="post-metadata">

**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\
**Post date:** [May 17, 2021, 1:51pm UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/6 "2021-05-17T13:51:49Z")

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I wonder if they seized in the block?

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<div class="post-metadata">

**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\
**Post date:** [May 17, 2021, 1:56pm UTC](https://community.cartalk.com/t/change-2016-rx350-spark-plugs/176867/7 "2021-05-17T13:56:12Z")

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> [@jtsanders](#):
>
> I wonder if they seized in the block?

Probably not, mostly because they are in the heads.