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- Brand new casting, valves, springs, locks, seals
- 1year/ unlimited mile warranty
- Includes head gasket kit
- No core
- Set it and forget it
- Includes performance springs 105lbs @ seat
Description
5.9l O-ringed Cylinder head with Performance 103lb springs and head gasket set. After many years of installing these heads on performance vehicles, we noticed they still had failures on head gaskets around 600Horsepower. To combat these failures, we have designed a new cylinder head gasket to accommodate a O-ring. This kit and a set of our medium strength head studs will withstand 1000HP. We do recommend drilling and tapping freeze plugs under the valve cover when increasing engine RPM.
