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Air and Fuel› Fuel Pumps, Regulators and Components

Industrial Injection

LML Duramax CP4 to CP3 Conversion Kit with Pump Core Charge of $100 Applies

$1,849.95 $1,794.45 Save $55.50

SKU: I002 IIS436403

In Stock
In Stock
Ships by Jun 13
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Industrial Injection IIS436403 is a complete CP4 to CP3 Injection Pump Conversion Kit for 2011-2016 6.6L GM Duramax LML engines, replacing the factory CP4 pump with a more reliable CP3 pump.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandIndustrial Injection
Part NumberI002 IIS436403

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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