3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!

what size thread? (isspro)

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Old May 11, 2008 | 06:15 PM
  #1  
one54ton's Avatar
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From: L-town, NOR*CALi
what size thread? (isspro)

having a tough time figuring out what size the tread the hole for my pyro...i have isspro gauges.
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Old May 11, 2008 | 06:27 PM
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From: NC
if you mean the hole in the manifold, it's 1/8" NPT
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Old May 11, 2008 | 06:28 PM
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From: Bozeman, MT
Mine came with a 1/4" NPT(pipe thread) thermocouple
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Old May 12, 2008 | 09:33 PM
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From: L-town, NOR*CALi
could have sworn mine is different...anyone else...seems bigger than 1/4
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Old May 12, 2008 | 09:39 PM
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From: Concord, Ca USA
Originally Posted by one54ton
could have sworn mine is different...anyone else...seems bigger than 1/4
1/4" pipe thread looks a lot bigger than regular 1/4" thread. The drill bit that is used for 1/4" pipe is 7/16".
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Old May 12, 2008 | 10:37 PM
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From: West Linn, Oregon
Mine came with 1/8" NPT thermocouple.
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