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Description
INDUSTRIAL INJECTION 436402 CP4 TO CP3 CONVERSION KIT (WITHOUT PUMP)2011 2016 GM 6. 6L DURAMAX LML (CUSTOM TUNING REQUIRED) The Industrial Injection 436402 CP4 To CP3 Conversion Kit (Without Pump) is a sure way to increase reliability and performance in the fuel system of your 2011 2016 GM 6. 6L Duramax LML. Built as a replacement for your factory CP4, the CP3 Conversion Kit eliminates the CP4 and uses the more reliable CP3 Pump. Proven reliability! The factory installed CP4 has known failure issues that cannot be
2011-2016 GM 6.6L DURAMAX LML (CUSTOM TUNING REQUIRED)
The Industrial Injection 436402 CP4 To CP3 Conversion Kit (Without Pump) is a sure way to increase reliability and performance in the fuel system of your 2011-2016 GM 6.6L Duramax LML. Built as a replacement for your factory CP4, the CP3 Conversion Kit eliminates the CP4 and uses the more reliable CP3 Pump.
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
Hardware For CP4 To CP3 Conversion
Not For Stock Applications - Custom Tuning Required
Tech Note: This is a hardware kit to allow you to convert your CP4 to a CP3. You must already have your own LBZ CP3 Pump to use this kit. Custom tuning required.
Shipping Notes
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.1 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
LOVE LOVE.
Size: 7.5 Wide, Color: Beige
I love these shoes so much I had to write a review. So comfortable. Cushioned. Fits perfectly especially if you are more on the wide side. They are soft. Flexible. Easy slip ons you can walk around in all day. I want to try more colors.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Great buy
Size: 12 Wide, Color: Black Faux Leather
I absolutely love these Amazon Essentials Belice Ballet Flats! They are so comfortable right out of the box and fit my feet perfectly. I can wear them all day without my feet hurting, which is hard to find with flats sometimes. They’re also really cute and go with almost everything I wear. I find myself reaching for them all the time because they’re both comfy and pretty. Definitely a great everyday shoe, especially for the price!
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Loooove these shoes!
Size: 7.5 Wide, Color: Chestnut Brown Faux Leather
I have these in several colors, and they’ve become a true staple in my wardrobe.
The Amazon Essentials Women's Belice Comfortable Slip-On Ballet Flats are exactly what I look for in an everyday shoe—simple, versatile, and comfortable right out of the box. The slip-on design makes them super convenient for busy days, and they pair effortlessly with everything from jeans to dresses to work outfits.
They’re lightweight but still feel supportive enough for all-day wear, and I appreciate that they don’t require a break-in period. The fit is generally true to size, and the variety of colors makes it easy to stock up and rotate depending on the outfit.
Overall, these are reliable, easy-to-wear flats that offer great value for the price. Not flashy, just consistently comfortable and practical—which is exactly why I keep coming back to them.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Has the look that they should cost more.
Size: 11.5 Wide, Color: Dark Turquoise
Comfortable and the fit is very comfortable. Looks great and extremely comfortable. Soft and light weight. Easy to put on. Sizing was perfect and the wide width is truly a wide. I’m coming back for more colors.
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Reviewed in the United States on June 1, 2026
★★★★★ 4
Good at price
Size: 9 Wide, Color: Sand
Fit a little small at my big toe but otherwise fit well. Heel rubbed slightly first 5 hour wear but no blister.
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Reviewed in the United States on May 9, 2026