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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
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For Your Every Summer RSVP, with Code: SUMMER15
Description
INDUSTRIAL INJECTION 436401 CP4 TO CP3 CONVERSION KIT WITH PUMP2011 2016 GM 6. 6L DURAMAX LML (STOCK APPLICATIONS) The Industrial Injection 436401 CP4 To CP3 Conversion Kit is a sure way to increase reliability and performance of the fuel system in your 2011 2016 GM 6. 6L Duramax LML. Built as a drop in replacement for your factory CP4, Industrial Injection designed this kit to work with all of your factory components. No need to spend even more on custom tuning, a programmer, or other modifications, because this
2011-2016 GM 6.6L DURAMAX LML (STOCK APPLICATIONS)
The Industrial Injection 436401 CP4 To CP3 Conversion Kit is a sure way to increase reliability and performance of the fuel system in your 2011-2016 GM 6.6L Duramax LML. Built as a drop-in replacement for your factory CP4, Industrial Injection designed this kit to work with all of your factory components. No need to spend even more on custom tuning, a programmer, or other modifications, because this kit works with factory components and will not cause any check engine lights.
Unlike other CP3 conversion kits on the market, the Industrial Injection has no start-ability issues. With this kit, there's no need to prime the injectors before starting the truck after installation of injectors. It's also emissions friendly! This CP3 Conversion Kit installs with all of the factory emissions equipment in place. There's no need to remove or modify any of the emissions systems on your truck. It will run as if it was from the factory.
Proven reliability! The factory installed CP4 has known failure issues that cannot be remedied. When these issues occur, they can cause damage to major components of your fuel system. The CP3 fuel pump has been proven to provide longevity and reliable performance.
FEATURES:
Increased Reliability
CP4 To CP3 Conversion
Works With Factory Emissions Equipment
Application Note: This kit is only intended for use on OE stock applications with all stock components. For stock, non-tuned applications only. If your truck is tuned
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Hit or the occasion. Very easy order.
Size: Medium, Color: Red
Fit like it was tailored to me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
★★★★★ 4
No bow tie
Size: X-Small, Color: Red
Liked the look, but did not come with bow tie.
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Reviewed in the United States on March 17, 2025
★★★★★ 5
Prom approved
Size: Small, Color: Black
My son got this for prom.. follow the size chart given because it is accurate. It’s very dapper and for the price way cheaper than renting something. It doesn’t look cheap at all. Very classy
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Great!
Size: Medium, Color: Gold, Size: Medium, Color: Gold
Great quality, better than I expected!
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Is very nice!
Size: Large, Color: Gold
Nice tuxedo for the Price! but definitely consider rep purchasing this in different colors of needed I didn’t end up returning it because we picked two different colors and went for the other. But this is a very nice.
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Reviewed in the United States on April 11, 2026
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