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JEGS MLS Cylinder Head Gasket for GM LS Engines [Bore: 4.020 in.]

555-210840

made in usa

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MLS Cylinder Head Gasket for GM LS Engines [Bore: 4.020 in.]
$46.99
$44.99
SAVE $2.00
More than 10 available
Cylinder Head Gasket
  • GM LS Engines
  • Bore: 4.020 in.
  • Thickness 0.051 in.
  • Multilayer Steel (MLS) Gasket
  • Replaces GM #12589227
  • Sold Individually
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    210840 is rated 4.0 out of 5 by 2.
    Rated 3 out of 5 by from I rather use OEM Had one blow to easily in a high compression motor. Switched over to GM LS9 gaskets and haven't had a problem since.
    Date published: 2016-02-25
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    So the bore shows 4.02 but I’m going to be using on an engine with a bore of 3.780 is that going to be okay?

    Asked by: Sean06
    The Jegs 555-210840 head gasket fits all LS engines.
    Answered by: jshook
    Date published: 2024-11-12

    The spec shows bore size of 4.02 but the GM factory gasket for the LS7 shows a bore size of 4.150" . Please advise, I want to make sure the right gaskets will be installed on my 2008 Corvette Z06 / LS7

    Asked by: Pugs12
    The Jegs 555-210840 head gasket is 4.02 inch bore.
    Answered by: jshook
    Date published: 2022-10-21
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