SKU: 7910637786

HSP BILLET VALVE COVERS (2004.5-2010 CHEVY / GMC)

Sale price$177.75 Regular price$197.50
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

HSP BILLET VALVE COVERS (2004.5-2010 CHEVY / GMC)Due to HSP's current order volumes, we are expecting most HSP products to ship out in 2 8 weeks from the date of purchase. If you would like a more accurate lead time please contact us directly. The 046 HSP or better known as the HSP Billet Valve Covers for the 2004. 5 2010 Chevrolet and GMC Duramax Equipped trucks. The HSP Billet Valve Covers for the 2004. 5 2010 Duramax trucks are for the performance and average trucks alike. If you are looking to

Due to HSP's current order volumes, we are expecting most HSP products to ship out in 2-8 weeks from the date of purchase. If you would like a more accurate lead time please contact us directly.

 

The 046-HSP or better known as the HSP Billet Valve Covers for the 2004.5-2010 Chevrolet and GMC Duramax Equipped trucks.

The HSP Billet Valve Covers for the 2004.5-2010 Duramax trucks are for the performance and average trucks alike. If you are looking to clean up that engine bay and stand out a little bit then these are exactly what you need.

 

Why Would you need the HSP Billet Valve Covers?

The biggest thing about the factory valve covers is they are just plain looking. The Duramax is a clean-looking engine in our opinion. You are able to see a lot more of it than expected in most V8 configurations. The thing is though the factory valve covers are just plain looking, and don't really have the ability to look better even when cleaned up. So that's why HSP Diesel went to work on making something that will not Only look good but give you options and features.

 

What do the HSP Billet Valve Covers do Differently?

First, let's start with the material, the HSP Billet Valve Covers are made from a CNC billet machined aluminum material. This means it will always look as good as it did the day you got it with minimal work. The next thing we did was as always we offered our color options. With our large line of factory colors and the option to add custom colors, you are able to match these HSP Billet Valve Covers to the engine color scheme that you want. It is worth noting that with this kit you can order the additional breather kit. This kit will include all the necessary hardware that will route the breathers to behind the front cab mounts. This reroutes features a 1/2 Inch NPT to a -10AN aluminum 90 degree fitting to a -10AN nylon braided hose on each valve cover. This is additional to our valve covers but is recommended. You will have to select it in the drop-down to purchase it.

 

What Comes with the HSP Billet Valve Covers?

  • (28) M6X1.0 x 16mm Socket Cap Bolts
  • (4) M4-0.7 x 6mm Socket Cap Screw
  • Billet Drivers Side Valve Cover
  • Billet Passenger Side Valve Cover

 

What Does the HSP Hot Side Intercooler Pipe Fit?

  • LLY: 04.5-05 VIN Code 2
  • LBZ: 06-07 VIN Code 2 or D
  • LMM: 07.5-10 VIN Code 6

 

How do people know the VIN code?

Engine code is dictated by the 8th character of the VIN number. The 10th character is the year of the truck.

 

*Special Note*

It is recommended to run these valve covers with our forward-facing thermostat housing. This is because there are no provisions to mount the factory hardware to the upper valve cover.

Running Change on these parts. These valve covers no longer come with O-Ring's we recommend using Grey RTV to create a proper seal.

 

Overview

  • CNC Billet Machined
  • 6061 T6 Aluminum
  • Cleaner Look
  • O-Ring Seal
  • 1/2 Inch NPT Port
  • All new hardware
  • Powder Coating available for that custom look
  • Crank Case Vent kit available

 

Our Warranty

HSP No BS Limited Lifetime Warranty

At HSP we believe in our products and we stand firmly behind every single one that leaves our facility. For years we have taken care of almost everything and anything that our customers had issues with, but we didn't have a set in stone warranty. We have always gone above and beyond for our customers which set us apart from the rest. We will continue that same standard, but now we are taking things to the next level.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7910637786

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4.2 ★★★★★
Based on 25 reviews
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Product Reviews
K
Verified Purchase
Kindle Customer
Dallas, US
★★★★★ 4
Really wanted to love these
Size: Queen(Pack of 2)
I really wanted to love these but they gave me a stiff neck. I haven't slept with a pillow since buying these. They are firm except where you lay your head. It just deflates there. I expected it to sink in to match the curve of my neck but it was more than I could handle. My head ended up in a valley between the two ends of the pillow. The price was good, zipper worked fine, it looks as advertised and the pillows are good quality. The cooling part works, its just not what I needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
J
Verified Purchase
Jack Raines
Massapequa, US
★★★★★ 5
best pillow I have ever bought.
Size: Queen(Pack of 2)
most comfortable pillow I have ever bought. It seems very well put together so I believe that it will last a long time. Very happy with the purchase. I do think the weight of the pillow will surprise many people because while it is quite heavy, it is very firm and extremely comfortable. Great value.
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Reviewed in the United States on May 27, 2026
R
Verified Purchase
RC
Whiting, US
★★★★★ 5
I paid for the product and it’s GOOD 👍🏽
Size: Queen(Pack of 2), Size: Queen(Pack of 2)
Honest review to help your decision. These are a bargain at two for one. I paid almost $30 for one at a local retailer and it’s already flattened after 7 months. This product arrives vacuum sealed with the cooling pillow covers separately (separate so you can wash before using). They are loaded with memory foam which I found pleasing. I chose to leave all of the foam in because I’m sure it’ll flatten sometime in the future. I’ve been using these for TWO MONTHS now and they have not flattened. Easy to mold and fluff, soft and they are added support for my back up pillows. I cannot attest to any type of pain relief because I have not experienced that with these personally. I do feel my sleep is better so my tension headaches have lessened. The cooling hex layer is on the cover NOT the actual pillows. I’m sure everyone knows that memory foam gets really hot 🥵 but the cooling covers on these help minimize that. It actually feels cool to the touch like a gel product. I find the quality to be exceptional. All in all, give it a shot.
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Reviewed in the United States on September 16, 2025
J
Verified Purchase
Jonathan Caballero
San Leandro, US
★★★★★ 3
More soft than firm
Size: Queen(Pack of 2)
Not firm but more soft, would I be returning probably not but if you were already on the fence this is your confirmation that it’s not as described, ( well to my standards at least ) it does feel of good quality but I was looking more a sturdy firm that soft and cushion feeling .
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Reviewed in the United States on January 1, 2026
S
Verified Purchase
StacyT
Phoenix, US
★★★★★ 5
Best fluffy but firm pillows
Size: King(Pack of 2), Size: King(Pack of 2)
These pillows are worth every penny! They started off pretty flat but after three days they plumped up well. In addition to them being plump, they are also firm. Exactly what I was looking for. You can shake up the internal stuffing if you want them softer too. They were a bit pricey but I’m going to repurchase and replace all my home pillows with these. I do sleep hot and the cooling side is perfect to lay on. Kept me cool and comfortable. I haven’t had any neck or back pain after switching to these pillows too. Absolutely recommend these for your home. The photo shows how full the pillows are. I have four pillows in the picture plus two smaller other brands. These are definitely fluffier.
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Reviewed in the United States on January 8, 2026

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