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2005 Chevrolet 6.6L Duramax LLY
SKU #: XDP-XD389 MPN #: XD389

XDP XD389 Performance Valve Spring & Retainer Kit 89-98 Dodge Ram 5.9L Cummins

$399.95
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Description
One of the most overlooked performance parts in most 12V Cummins performance builds is the valve-springs. They may not be something you can see, but we can assure you, they are essential in ensuring your engine is operating properly with all your other performance parts. The factory springs are not designed to handle the elevated boost levels that are typical in modified applications causing valve float. This will drastically hurt your engine performance. This kit is a must have for your performance build. This kit features a conical design that provides more valve control than a standard spring. This shape allows for a smaller and lighter spring retainer that is also stronger due to the size reduction. Unlike other valve springs on the market, this kit can be used on a wide range of trucks, from stock all the way up to performance builds. This is a perfect one-and-done upgrade that lets you modify your engine for more power down the road. Each spring is computer load mapped and then matched within 1 lb of seat pressure followed by a stress relief process to ensure quality and long term reliability.  Each set comes complete with springs, locks, retainers, and is backed by a 1 year manufactures unlimited mileage warranty.

One of the most overlooked performance parts in most 12V Cummins performance builds is the valve-springs. They may not be something you can see, but we can assure you, they are essential in ensuring your engine is operating properly with all your other performance parts. The factory springs are not designed to handle the elevated boost levels that are typical in modified applications causing valve float. This will drastically hurt your engine performance. This kit is a must have for your performance build.

This kit features a conical design that provides more valve control than a standard spring. This shape allows for a smaller and lighter spring retainer that is also stronger due to the size reduction. Unlike other valve springs on the market, this kit can be used on a wide range of trucks, from stock all the way up to performance builds. This is a perfect one-and-done upgrade that lets you modify your engine for more power down the road. Each spring is computer load mapped and then matched within 1 lb of seat pressure followed by a stress relief process to ensure quality and long term reliability.  Each set comes complete with springs, locks, retainers, and is backed by a 1 year manufactures unlimited mileage warranty.

No shipping to CA
FEATURES AND BENEFITS
  • Conical spring design
  • Performance valve spring set
  • Essential for elevated boost levels
  • Complete set(springs, locks & retainers)
PRODUCT SPECIFICATIONS:
  • Installed Height: 1.940"
  • Installed Pressure: 172LBS
  • Open Pressure: 375LBS At 1.275"
  • Coil Bind: 1.225"
About XDP
XDP is Your Source for All Kinds of Diesel Accessories

Whether you're after engine dress up items, heavy duty gear reduction starters, transmission coolers, or anything in beteween, Xtreme Diesel Performance manufacturers a full breadth of products for your Cummins, Duramax, Powerstroke, or EcoDiesel to keep it on the road and running properly. Nowadays, its hard to find a manufacturer of OE level products that produces at least a little bit of everything. Instead, you're forced to buy your new injectors from one company, the injection pump from another, and then your gasket installation kit from yet another company. By maintaining and constantly growing their catalog of XDP Mfg. branded parts, you're able to stick with a single manufacturer in many instances, adding simplicity and peace of mind that components will work in tandem with one another.

From Exhaust Bolts to Radiators, Xtreme Diesel Power Has Your Needs Covered.

Due to their extensive knowledge in light duty diesel parts, XDP Manufacturing is able to determine shortcomings in factory parts and create a solution to ensure your diesel truck is as reliable as it can be. When it comes time to replace a damaged or worn part on your diesel truck, wouldn't you rather replace it with something that's proven to last, and hopefully last longer than the piece you're replacing? Of course you would! This is where you can trust in XDP's line of electronics and engine parts to keep your truck on the road for the long haul.