• Industrial Injection Bosch Disaster CP3 Conversion Kit - Duramax 6.6L LML, Emissions Intact | 2015-2016 GMC Sierra 3500 - Stateside Performance - Fuel Systems - Industrial Injection - Industrial Injection Bosch Disaster CP3 Conversion Kit - Duramax 6.6L LML, Emissions Intact | 2015-2016 GMC Sierra 3500
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IND4G6106

Industrial Injection

Industrial Injection Bosch Disaster CP3 Conversion Kit - Duramax 6.6L LML, Emissions Intact | 2015-2016 GMC Sierra 3500

Industrial Injection Bosch Disaster CP3 Conversion Kit - Duramax 6.6L LML, Emissions Intact | 2015-2016 GMC Sierra 3500

$7,339.78 USD
$7,339.78 USD
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The Industrial Injection Bosch Disaster CP3 Conversion Kit fits the 2015-2016 GMC Sierra 3500 and replaces the failure-prone factory CP4.2 pump with a proven Bosch CP3.

Keeps your emissions system intact for street-legal peace of mind.

Install Difficulty: Professional Install Only
Requires complete removal of the factory CP4.2 pump, high-pressure fuel line work, and precise fuel system priming; typically takes 6-8 hours on a vehicle lift with diesel-specific tooling.

Product Overview

This conversion kit swaps the LML Duramax's CP4.2 injection pump for a Bosch CP3, the same pump architecture that ran reliably on LB7, LLY, LBZ, and LMM Duramax engines.

The CP4.2 is known for catastrophic failure that sends metal debris through the entire fuel system. This kit prevents that scenario while retaining the factory DPF, EGR, and emissions equipment.

Designed specifically for the 6.6L LML Duramax to bolt in using OE-style mounting and connections.

Features & Specifications

  • Fits: 2015-2016 GMC Sierra 3500
  • Fits 6.6L LML Duramax diesel only
  • Replaces factory CP4.2 pump with proven Bosch CP3
  • Emissions intact -- retains DPF, EGR, and factory emissions equipment
  • Prevents catastrophic CP4.2 failure and fuel system contamination
  • Direct-fit conversion using OE-style mounting
  • Includes components needed to complete the CP3 swap

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2015-2016 GMC Sierra 3500 All
⚠ Submodel Fitment: If your submodel is not listed in the fitment table above, we cannot confirm fitment. Please contact us before purchasing to verify.

Shipping & Returns

Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.

Warranty

All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.

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