# Head Gasket Thickness

**URL:** https://forums.speedlife.net/t/head-gasket-thickness/156848
**Category:** SON240sx Automotive
**Created:** [June 21, 2010, 5:42pm UTC](https://forums.speedlife.net/t/head-gasket-thickness/156848 "2010-06-21T17:42:34Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![chopsticksx](https://avatars.discourse-cdn.com/v4/letter/c/6a8cbe/32.png) [@chopsticksx](https://forums.speedlife.net/u/chopsticksx)
#### Post date: [June 21, 2010, 5:42pm UTC](https://forums.speedlife.net/t/head-gasket-thickness/156848/1 "2010-06-21T17:42:34Z")

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So I’m finally biting the bullet and planning to put in a APEX’I HG since the motor is apart, but my questions is what is the actual stock thickness? I’ve been trying to research but I’ve seen mixed answers on SON240, NICO, and other forums. It pretty much comes down to 0.8mm and 1.1mm, which is the actual size?

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### Author: ![Tacoboy](https://avatars.discourse-cdn.com/v4/letter/t/2acd7d/32.png) [@Tacoboy](https://forums.speedlife.net/u/Tacoboy)
#### Post date: [June 21, 2010, 5:47pm UTC](https://forums.speedlife.net/t/head-gasket-thickness/156848/2 "2010-06-21T17:47:35Z")

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What does it matter?

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### Author: ![chopsticksx](https://avatars.discourse-cdn.com/v4/letter/c/6a8cbe/32.png) [@chopsticksx](https://forums.speedlife.net/u/chopsticksx)
#### Post date: [June 21, 2010, 6:18pm UTC](https://forums.speedlife.net/t/head-gasket-thickness/156848/3 "2010-06-21T18:18:06Z")

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Just want to know the info before I get my HG, if stock is 0.8mm I’d opt for a 1.1mm, if 1.1mm I’d opt for 1.5mm.