• Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500 - Stateside Performance - Turbochargers - Garrett - Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500
  • Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500 - Stateside Performance - Turbochargers - Garrett - Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500
  • Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500 - Stateside Performance - Turbochargers - Garrett - Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500
  • Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500 - Stateside Performance - Turbochargers - Garrett - Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500
1 4

GRT886976-5004S

Garrett

Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500

Garrett PowerMax GT3788V Turbocharger Kit - 6.6L Duramax LML | 2011-2014 Chevy Silverado 3500

$3,069.81 USD
$3,069.81 USD
Sale Sold out
Shipping calculated at checkout.

The Garrett PowerMax GT3788V Turbo Kit fits the 2011-2014 Chevy Silverado 3500 6.6L Duramax LML and delivers a direct-bolt turbocharger upgrade over the factory unit.

Install Difficulty: Professional Install Only
Turbocharger replacement on the LML Duramax requires removal of intake and exhaust plumbing, oil and coolant line service, and specialized diesel shop tools; typically takes 6-8 hours. A supporting ECU tune is required after installation to safely manage the new airflow and boost.

Product Overview

This is a drop-in replacement turbo engineered specifically for the LML Duramax platform. It uses the factory mounting points, oil feed, and coolant lines for a clean install without fabrication.

The upgraded compressor and turbine wheels flow more air than stock, supporting higher horsepower and towing performance on your 3500HD. A supporting tune is required to safely unlock the added airflow.

Features & Specifications

  • Fits: 2011-2014 Chevy Silverado 3500
  • Fits 6.6L Duramax LML diesel only
  • Direct bolt-on replacement for the factory GT3788V turbo
  • Upgraded compressor and turbine wheels for increased airflow
  • Uses factory oil and coolant line connections
  • Retains factory electronic actuator compatibility
  • Supports higher horsepower and towing performance
  • Professional tune recommended -- this forced-induction component changes airflow and boost, so proper ECU calibration is recommended to safely realize its performance and avoid lean or over-boost conditions.

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2011-2014 Chevrolet Silverado 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.

View full details

  • Free shipping over $250

    Free shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.

    Shipping policy 

  • 30-day returns

    Returns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.

    Return policy