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12642129 GT3788LVA Turbocharger 6.6L Duramax LML

Aftermarket 12642129 GT3788LVA turbocharger for Chevrolet Silverado 2500HD/3500HD with 6.6L Duramax LML engine. Verify part number and OEM references before ordering.

Type Turbocharger In Stock Part # 12642129 Models GT3788LVA Weight 25.00 kg Packing 34*35*43
Cross Reference 12642314
Show more cross references 12642314 800799-0002 800799-0003
CA$ 728 / 1 pc(s)
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Subtotal: CA$ 728

Standard shipping for one packed item (CAD)
CanadaCA$ 550.76

Preparation: 5 business days after payment. Transit: 5 business days.

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12-Month Warranty Shipping to Canada only. OEM-Grade Quality

This aftermarket 12642129 GT3788LVA turbocharger is a replacement unit for Chevrolet Silverado 2500HD and 3500HD trucks equipped with the 6.6L Duramax LML engine. Verify part number, engine code, and OEM reference numbers such as 12642314 before ordering to ensure correct fitment.

Key Specifications

  • Part Number: 12642129
  • Turbo Model: GT3788LVA
  • Product Type: Turbocharger
  • OEM Reference Numbers: 12642314, 800799-0002, 800799-0003
  • Packing Dimensions: 34 x 35 x 43 cm
  • Gross Weight: 25 kg
  • Application Clue: Chevrolet Silverado 2500HD/3500HD, 6.6L Duramax LML engine

These specifications help buyers verify the unit against their existing equipment. Cross-check the part number and OEM references against your vehicle's service records or existing turbocharger markings to confirm the correct replacement application before placing an order.

Application & Compatibility

Source application path clues for buyer verification. These are source category/application paths, not confirmed fitment claims:

  • CHEVROLET > Chevrolet Silverado 2500HD > 3500HD(2011-2016) > 6.6L Duramax LML
  • GM > GM DURAMAX LML(61MM COMP. WHEEL > LML
  • GM > GM PICK UP) > LML

This turbocharger is listed for the Chevrolet Silverado 2500HD and 3500HD (2011-2016) with the 6.6L Duramax LML engine. It is also associated with GM Duramax LML applications featuring a 61mm compressor wheel. Use the part number 12642129 and OEM reference numbers 12642314, 800799-0002, and 800799-0003 to verify fitment against your vehicle's service records. Confirm the specific production year and turbo configuration before ordering, as mid-production updates may affect actuator or related electrical detail compatibility.

Technical Notes

The GT3788LVA unit features a visible variable geometry actuator and electrical wiring harness with a multi-pin related electrical detail. Buyers should inspect the existing turbo's actuator disc, related electrical detail type, and wiring harness to confirm alignment with this replacement unit. Note the brass-colored fitting on the actuator assembly and the flanged mounting tabs on the turbine housing. Verify these physical characteristics against your specific application to ensure the actuator voltage and related electrical detail type match before ordering.

B2B Supply

LeadTurbo supports B2B buyers, repair shops, and distributors with volume pricing and worldwide shipping for the 12642129 GT3788LVA turbocharger. Technical fitment support is available to help verify actuator configuration, related electrical detail type, and OEM reference numbers before ordering. For fleet parts or bulk inquiries, contact our team with your specific vehicle application and part number to confirm availability and logistics details.

Product FAQ

For the 6.6L Duramax LML engine, confirm the specific production year and turbo model GT3788LVA. Verify that OEM reference 12642314 or 800799-0002 matches your vehicle's original equipment.

Use the public part number 12642129 and OEM reference numbers 800799-0002 and 800799-0003 to cross-check against GM catalogs. Confirm the turbo model GT3788LVA matches your application.

Inspect the electrical wiring harness and multi-pin related electrical detail on your existing turbo. Match the related electrical detail type and actuator configuration to the GT3788LVA replacement unit before ordering.

The packing dimensions are 34*35*43 cm with a gross weight of 25 kg. This helps buyers plan logistics for B2B orders and fleet parts delivery.

CHEVROLET and other product, brand and model names are the property of their respective owners and are used for reference and application-lookup only. LeadTurbo is not affiliated with or endorsed by CHEVROLET.

Compatibility Verify part number 12642129, engine code LML, vehicle application, production year, and OEM reference numbers (12642314, 800799-0002, 800799-0003) before ordering. Confirm turbo configuration and actuator type for your specific application.

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Frequently Asked Questions

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Turbochargers

Complete Turbo Units

Complete turbo units designed for rigorous heavy-duty use where OEM units may fall short.

CHRA Core

CHRA / Core Assemblies

Brand-new compatible CHRA cores — like-new performance at a fraction of replacement cost.

Turbine Wheel

Turbine Wheels & Shafts

Precision-balanced turbine shafts engineered from inside out for superior durability.

Turbine Housing

Turbine Housings

Silicon-molybdenum (Si-Mo) nodular cast iron — engineered for extreme heat resistance.

Compressor Housing

Compressor Housings

OEM-matched geometry and surface finish — advanced casting and machining for perfect fitment.

Bearing Housing

Bearing Housings

Rock-solid platform engineered for high-output rebuilds — the foundation for performance.

Compressor Wheels

Compressor Wheels

Aluminum, stainless steel, or titanium alloys — precision machined for superior responsiveness.

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