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OEM Plenum / Intake Manifold Bolt Sizes

Old 10-02-2009, 08:29 PM
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Exclamation OEM Plenum / Intake Manifold Bolt Sizes - VQ35DE

There are a bunch of threads on here asking for the sizes of the OEM plenum nuts & bolts. There's some info in the FSM, but, surprisingly, even Nissan's fast system doesn't have the complete specs. Anyway, the OEM sizes are below - add 8-10mm if you're running a 5/16" plenum spacer.

Intake Manifold Collector (Upper)



Bolts 1, 3, 6, & 9 = M6 x 1 x 60mm (red)
Bolts 2, 4, & 5 = M6 x 1 x 45mm (yellow)
Bolts 7, 8, 10, 11, 13 - 16, & 18 = M6 x 1 x 25mm (green)
Nuts 12 & 17 = M6 (green; these nuts & studs are sometimes replaced with M6 x 1 x 25mm bolts in aftermarket applications)


Intake Manifold Collector (Lower)



Bolts 1-6 = M6 x 1 x 70mm (blue)
Nuts 7 & 8 = M6 (violet)

hopefully this helps someone who wants to go back to stock, but has misplaced their OEM bolts.

Last edited by - bigc -; 10-02-2009 at 08:31 PM.
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Old 04-25-2011, 05:11 AM
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Well this thread is awesome. My brother broke one of my bolts that are supposed to be torqued in Inch-Pounds (The blue bolts) and we needed to find replacements. Thanks!
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Old 04-25-2011, 06:10 AM
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I found them at Lowe's near me. They are pretty organized and have a drawer in the hardware section specifically for M6 bolts. I found all the sizes I needed in there.
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Old 04-25-2011, 10:02 PM
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glad it helped
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Old 10-08-2017, 09:07 AM
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Thanks google and OP
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