6.7 L Cummins .020 Over Fire Ring Gasket

6.7L Fire Ring Head Gasket — .020 Over

The .020-over version of Hamilton’s 6.7L fire ring gasket, for heads or blocks that have been milled .020". Proven on engines making 800 hp and beyond, where a factory gasket simply will not stay put.

Gasket Specifications

• Thickness: .066" (1.75 mm)
• Wire: .105", 4.560" O.D.
• Groove radius: .017"–.018" cut in head or block

Installation Requirements

• Head studs are mandatory for proper clamp load
• Head must be flat within .003" end to end
• Hot re-torque is required
• Under 800 hp: a groove in either head or block is adequate
• Over 800 hp: cut grooves in both

Fitment

2007.5–2018 Dodge and Ram 6.7L Cummins 24-valve engines with a head or block milled .020".

Fitment Table

Frequently Bought Together

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