5.9L Cummins O-ringed Cylinder Head with 103lb springs, gasket kit included(2003-2007)
$2,349.00 Tax
- 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
5.9L Cummins O-Ringed Cylinder Head w/ 103lb Springs & Gasket Kit (2003–2007)
Built to Withstand 1000HP – Designed for High-Performance 5.9L Builds
Maximize top-end durability and boost-holding capability with this O-ringed cylinder head kit for your 2003–2007 5.9L Cummins. Featuring performance-rated 103lb valve springs and a custom-designed O-ringed sealing surface, this setup addresses common head gasket failures seen at the 600+ HP mark. This kit also includes a head gasket set, making it an ideal choice for engine builds targeting up to 1000 horsepower.
✅ Kit Includes:
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Brand-new O-ringed 5.9L Cummins cylinder head
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103lb heavy-duty valve springs – ensures valve control at high RPM
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Custom head gasket set designed specifically for O-ringed heads
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Assembled and ready for installation
🔧 Fitment:
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Fits 2003–2007 Dodge Ram 2500 & 3500 with 5.9L 24V Cummins diesel engine
🛠️ Performance Notes:
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Designed to eliminate head gasket failures under high boost and power
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Pair with medium-strength head studs to handle up to 1000HP
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Recommended: drill and tap freeze plugs under valve cover for high-RPM use
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Installation instructions included
This kit is built from the ground up for high-performance diesel applications. Whether you’re racing, sled pulling, or building a powerhouse tow rig, this O-ringed cylinder head kit provides the top-end strength you need to push your 5.9 Cummins to the limit.
🚚 Shipping & Delivery Information
At PowerStroke Products, we are committed to getting your parts to you quickly, safely, and reliably. We partner with trusted carriers to ensure your order arrives on time and in great condition.
📦 Standard Shipping
We ship most of our automotive parts through UPS or FedEx, depending on your location and the size of your order.
Orders are typically processed within 1–2 business days.
Shipping times vary based on your location, but most orders arrive within 2–7 business days after processing.
Tracking information will be provided as soon as your order ships.
🏋️♂️ Freight Shipping
Some of our parts — such as engines, cylinder heads, or items over 150 lbs — require freight shipping.
Freight deliveries are handled via reliable LTL carriers.
You will be contacted to schedule delivery, and a signature may be required upon arrival.
Please ensure you have the appropriate equipment or assistance to receive large or heavy shipments.
📍 Delivery Locations
We currently ship within the continental United States. If you're located in Alaska, Hawaii, or outside the U.S., please contact us before placing your order to explore available shipping options.
❗ Important Notes
We do not ship to P.O. Boxes — please provide a physical shipping address.
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If a package arrives damaged or incomplete, please contact us within 48 hours so we can assist you promptly.
