Shop / Fuel Systems / Industrial Injection 436405 CP4 to CP3 Conversion Kit w/ 85% Over Pump 11-16 6.6L GM Duramax LML
Industrial Injection
Industrial Injection 436405 CP4 to CP3 Conversion Kit w/ 85% Over Pump 11-16 6.6L GM Duramax LML
MPN: IIS-436405
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…
Tow PigStreet Performance
$2,909.95
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Fitment sensitive
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This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
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Warranty
Manufacturer Warranty Available
Industrial Injection (Manufacturer) · 12 months from date of purchase
View complete warrantyWith 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 an 85% over CP3 that is capable of supporting 800 horsepower.
Proven Reliability
• The CP3 fuel pump is proven to have longevity and to be reliable in performance applications.
Remove the Worries
• The CP4 has known failure issues that cannot be remedied. These issues, if they occur, can cause damage to other major fuel system components.
Tuning Required
• In order for this kit to function properly, it requires custom tuning, such as EFILive or EZ LYNK.
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 an 85% over CP3 that is capable of supporting 800 horsepower.
Proven Reliability
• The CP3 fuel pump is proven to have longevity and to be reliable in performance applications.
Remove the Worries
• The CP4 has known failure issues that cannot be remedied. These issues, if they occur, can cause damage to other major fuel system components.
Tuning Required
• In order for this kit to function properly, it requires custom tuning, such as EFILive or EZ LYNK.
Product conditions
Professional installation is recommended.
- Return eligibility
- Returnable within 30 days of confirmed delivery, in original condition, with an approved RMA
- Return window
- 30 days from confirmed delivery
- Restocking fee
- 15% restocking fee
- Return shipping
- Customer pays return shipping on voluntary returns
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Cancellation is only possible before the supplier order is submitted
- Warranty provider
- Industrial Injection (Manufacturer)
- Warranty duration
- 12 months from date of purchase
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–7 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- Industrial Injection
Main warranty exclusions
- Improper installation or incorrect product configuration
- Racing, competition, or commercial use
- Unauthorized modification, alteration, or improper tuning
- Normal wear or lack of required maintenance
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.