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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
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Description
Industrial Injection 436403 CP4 to CP3 Conversion Kit (Tuning Required) 11-16 6.6L GM Duramax LMLWith the release of the LML Duramax in 2011, GM made the switch from the reputable CP3 injection pump to the lower output CP4 pump, simply because they deemed it was Is good enough for you and your truck? We've seen numerous failures of the CP4 on stock trucks, let alone even slightly modified trucks that chew them up and spit them out. Industrial Injection has this complete conversion kit that delivers everything you need to swap out your failure
With the release of the LML Duramax in 2011, GM made the switch from the reputable CP3 injection pump to the lower output CP4 pump, simply because they deemed it was Is good enough for you and your truck? We've seen numerous failures of the CP4 on stock trucks, let alone even slightly modified trucks that chew them up and spit them out. Industrial Injection has this complete conversion kit that delivers everything you need to swap out your failure prone CP4 to a dependable CP3, including the CP3!IMPORTANT NOTE
- This kit will ONLY work with trucks with custom ECM tuning. See Related Products section for alternatives.
Proven Reliability
- The CP3 fuel pump is proven to have longevity and to be reliable in performance applications.
- The CP4 has known failure issues that cannot be remedied. These issues, if they occur, can cause damage to other major fuel system components.
- This kit requires custom tuning in order to properly function
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
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Comfortable support
Size: 46G, Color: Nude
This bra gives you all the support you need and is comfortable.
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Reviewed in the United States on May 16, 2026
★★★★★ 4
Nice support but...
Size: 42DDD, Color: Black
I ordered this for my cousin who finds it very difficult to find bras in her size. She told me she wished she could find a good support bra without the wire because she had deep red marks under her old bra so I did some research and found this bra. She came over and tried it on and my first impression was WOW the support is great but it was very difficult for her to fasten all the hooks in the front due to her long nails. After some time she managed to fasten all the hooks and I noticed I needed to adjust the straps for her and she said it felt a lot better. This wireless bra looks so different on a woman with large breasts than the models in the picture, my cousin's cleavage was very substantial, unlike the model in the pic so if you are heavy set with large breasts, just know you will still have ample cleavage showing. After she put her top back on I noticed just how smooth her back looked, there were no bulges showing and she told me she felt like her posture was better due to the support of this bra. I have four stars due to the hooks being difficult to fasten.
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Reviewed in the United States on August 2, 2025
★★★★★ 1
No support
Size: 42D, Color: Dark Turq Lace
No support, fits large.
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Reviewed in the United States on March 3, 2026
★★★★★ 5
No more shoulder pain!
Size: 52DD, Color: Shell Pink
Very comfortable & quality fabric. Very pleased with the fit & no more shoulder pain!
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Reviewed in the United States on July 11, 2025
★★★★★ 3
You get what you pay for
Size: 54C, Color: Black
It's really nice n a great bra until u realize that the straps also have hooks, n the hooks keep coming undone n your boobs hanging out. Beware ladies you have to be big n also tall to wear this if not prepare n don't keep your important things in your bra bc if you're like me, u wanna keep the important things close to u. You will lose everything and not even realize it
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Reviewed in the United States on November 1, 2025