Description
12V Cummins Loaded O-Ringed Cylinder Head w/ 150lb Springs (1994–1998)
New Casting – No Core Required – Built for High Performance
Upgrade your 1994–1998 12V Cummins with this fully loaded O-ringed cylinder head, designed to handle serious performance and boost. Featuring a new casting, this head comes pre-assembled with 150lb performance valve springs, heavy-duty retainers, and 10° locks for improved valve control at high RPM. The O-ringed combustion surface helps maintain a tight seal under pressure, making this head ideal for high-horsepower and towing applications.
✅ Key Features:
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Brand-new casting – no core charge or exchange required
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O-ringed head for improved sealing under Boost
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Includes 150lb valve springs, retainers, and 10° locks
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Springs designed to control valve float and reversion in high-RPM and high-boost conditions
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Compatible with standard, .010″, and .020″ over MLS head gaskets
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Head gasket NOT included
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Factory Cummins or PSP gasket recommended when used with O-ringed head
🔧 Fitment:
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Fits 1994–1998 Dodge Ram 2500 & 3500 with the 5.9L 12V Cummins diesel engine
Whether you’re building a sled puller, race truck, or a powerful tow rig, this loaded O-ringed cylinder head delivers the performance and durability your 12V Cummins build demands.
