Hamilton Cams 1989-1998 Dodge/Ram 2500/3500 5.9L Cummins 12V Dual Valve Spring Kit
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
The 12-valve dual spring kit includes retainers and 10-degree locks for builds needing more spring capacity than a single-spring setup. Have your machine shop verify installed height and review the valve-stem seal requirements below.
Dual Spring Kit – Made in the USA, Includes Retainers & 10° Locks
When higher RPM, greater valve lift, stiffer spring pressures, and larger valve sizes exceed a single spring’s capabilities, it’s time to upgrade to a dual spring setup. Our American-made Dual Valve Springs provide the extra control you need, maintaining precise valvetrain motion and safeguarding against valve float.
Key Benefits
- Enhanced Valve Control: Eliminate the risk of valve float in high-stress, high-lift applications.
- All-Inclusive Kit: Comes complete with retainers and 10° locks, ensuring a secure fit and simplified installation.
- High Lift Compatibility: Engineered for up to .700″ lift—be sure your machine shop sets the correct installed height.
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DIY Valve Seal Upgrade:
- You can run these springs without valve stem seals, or
- Modify your head to use Comp Cams 519-16 seals by employing a Howards Cams Cutter (part #92035) and 5/16″ arbor (#92085).
- The modification is quick and easy—usually under five minutes with a cordless drill.
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 1989–1993 | Dodge D250 |
| 1989–1992 | Dodge D350 |
| 1994–1998 | Dodge Ram 2500 |
| 1994–1998 | Dodge Ram 3500 |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
