Cometic
Cometic Nissan RB-26 6 Cyl 88mm Bore .030in MLS Head Gasket
Cometic Nissan RB-26 6 Cyl 88mm Bore .030in MLS Head Gasket
Part number: CGSC4321-030
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Listed for: Nissan RB-26 6Fitment notes & questions
Nissan RB-26 6 Cyl 88mm Bore .030in MLS Head Gasket by Cometic for Nissan. Head gasket jobs take the top of the engine apart, which is why most people replace the related gaskets and bolts at the same time.
Quick facts
- Brand: Cometic
- Part type: Head gasket
- Listed for: Nissan
Good to know
- Warranty terms: Warranty
Tip: Most head gaskets call for new head bolts and a flat, clean deck surface. Check the head and block before you reassemble.

Cometic head gasket for the Nissan RB-26 6: what to know
A failed head gasket can mix coolant and oil, push coolant out of the system or cause overheating, so it is a job worth doing once and doing right.
Fitment notes
- Listed for: Nissan RB-26 6.
- Specs, lead time and warranty come from Cometic and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Head bolts. Many engines use torque-to-yield head bolts that should not be reused.
- Coolant. Refill with the coolant type your engine calls for.
- Valve cover and intake gaskets. They come off during the job, so it is the time to replace them.
More for your car: Head Gaskets · Nissan Parts · All Head Gaskets · Engine
Questions about Nissan RB-26 6 head gasket
Will this fit my Nissan RB-26 6?
What are signs of a bad head gasket?
Should I resurface the cylinder head?
Where do specs and warranty details come from?
Questions & answers
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