Billet Aluminum Valve Cover for 2004.5–2010 GM 6.6L Duramax
Billet Aluminum Valve Cover for 2004.5–2010 GM 6.6L Duramax
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Description
Upgrade your 2004.5–2010 GM 6.6L Duramax with a billet aluminum valve cover engineered for strength, sealing, and performance builds. The stock cast cover can crack, warp, or leak under heavy towing, high heat, or tuned engines. This CNC-machined replacement is 19.5mm thick, ensuring rigidity, improved sealing, and long-term durability. Designed with PCV flexibility, it allows reroute or delete configurations to reduce oil vapor re-entry into the intake. Ideal for performance builds, heavy haulers, or OEM replacements, this cover combines functional reliability with a clean, anodized finish for an upgraded engine bay appearance.
Fitments
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2004.5–2010 GM 6.6L Duramax Diesel Engines
Key Features
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Billet Aluminum Construction – Stronger and more durable than OEM cast aluminum, resisting warping and cracking.
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CNC Precision, 19.5mm Thickness – Reinforced structure ensures better sealing and deformation resistance.
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PCV Options – Includes dual fittings for reroute or external catch-can setups, reducing oil vapor contamination in the intake system.
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New Mounting Hardware – Comes with a complete set of installation bolts.
Specifications
| Material | Billet Aluminum (CNC-machined) |
| Thickness | 19.5mm |
| Weight | 6.19 kg |
| Installation Location | Engine top – replaces factory valve cover |
| Fitment | OEM bolt-on design |
FAQs
Q: Why replace the OEM valve cover?
A: Stock covers are prone to cracking, leaking, and poor sealing under heat or pressure. This billet cover is stronger, thicker, and designed to handle performance or heavy-duty use.
Q: Does this include a new gasket?
A: No, a new gasket is not included. You’ll need to reuse or replace the factory gasket during installation.
Q: Can I retain the OEM fuel filter bracket?
A: No. This cover does not have the factory standoffs. Bracket or harness modifications are required if you plan to reuse the OEM fuel filter mount.
Q: What are the PCV options?
A: The cover has two fittings—allowing you to reroute gases to a catch can, vent them to atmosphere, or adapt to your custom setup.
Q: Does this product comply with emissions regulations?
A: Since it modifies the PCV system, compliance depends on your local laws. Always check regulations before installation.
Q: Will it improve engine performance?
A: Indirectly. By preventing leaks and reducing oil vapor in the intake, it helps maintain turbo efficiency, intake cleanliness, and overall reliability.
Q: Is installation difficult?
A: It’s a direct bolt-on to the cylinder head, but due to PCV and bracket modifications, professional installation is recommended.
Q: What finish options are available?
A: Black, red, and silver anodized finishes, offering both durability and visual appeal.
Q: Can I use this as an OEM replacement?
A: Yes, it’s a suitable upgrade when replacing cracked, leaking, or warped OEM covers, even for daily use.
Q: Does it work with aftermarket intakes?
A: Yes. If deleting the PCV port, pairing with a PCV-less intake horn is recommended for a cleaner setup.
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date.
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip.
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- One-Year Warranty
- 14-Day Return
- 4-12 Days To Arrive
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Frequently Asked Questions
What is a delete tuner?
A delete tuner is a device that reprograms yourtruck's ECM (computer) to turn off emissionssystems like the DPF, EGR, and DEF, allowing yourtruck to run without those components
Can l use a delete tuner withoutphysically removing TheDPF/DEF/EGR parts?
You MUST remove your DPF(Diesel ParticulateFilter), as the filter will clog and stop all exhaust flowwhen shut off. You will no longer need DEF(DieselExhaust Fluid), and you may remove your DEF tankif you wish, or it can sit empty. The EGR may remainas is, but we recommend removing the physicalparts as well.
Is a Delete Tune bad for mytruck's engine?
Quite the opposite. In fact, many customers reportimproved engine life, smoother shifting, and betterfuel economy (typically 3-5 MPG gains) when usinga quality delete tuner.
What's the difference between adelete tuner and a delete tune?
The tuner is the hardware device. The tune is thesoftware file that gets uploaded to your truck's ECM.Your delete tuner includes a delete tune when youpurchase from us.
Do delete tuners void my warranty?
Yes. Any emissions-related modification, includingtuning, can void the manufacturer's warranty. Manycustomers wait until after their warranty expiresbefore deleting.
Do l need a mechanic to install thetuner? How long does installationtake?
Not necessarily. Many of our customers install their delete tuner themselves in under 30 minutes. We include easy-to-follow instructions, and our support team is available if you need help.
Will my truck pass inspection oremissions testing with a deletetuner?
No. Delete tuners disable emissions systems, so your truck will not pass emissions tests in areas where they're required. Some states have exemptions (e.g. heavy-duty or rural-use trucks).
Can l go back to stock afterinstalling a delete tuner?
Yes. However, in most cases you will have to have the ECM flashed at the dealership. If this is a concern, contact our team and we can explain further.
Is the delete tune VlN-locked?
Yes. All delete tunes are VIN specific and will only work on one truck. The tuner (hardware device), may be used on multiple vehicles for diagnostic or monitoring purposes where applicable.
What support do l get with my tuner?
We offer lifetime customer support, step-by-step install guides, and remote help from our tuning team. You're never left hanging, even after the sale.