Garrett 848212-5001S GT3788VA New Turbo - 2004.5-2010 Duramax LLY LBZ LMM

The Garrett 848212-5001S GT3788VA is a brand-new OE stock replacement turbocharger for 2004.5-2010 GM 6.6L Duramax LLY, LBZ, and LMM engines - Silverado, Sierra, Express, and Savana 2500, 3500, and 4500. This is a 100% new Garrett unit - not rebuilt or remanufactured - featuring a revised center housing with three cobalt pins for improved vane actuation, cobalt VGT pins, and VSR factory balancing. A new VGT control valve and new VGT position sensor are included. No core charge required.

The Garrett 848212-5001S is a brand-new GT3788VA stock replacement for 2004.5-2010 GM 6.6L Duramax LLY, LBZ, and LMM trucks; it includes the VGT control valve and position sensor, requires no core return, and is backed by a 1-year / 100,000-mile warranty. Gaskets are sold separately.

Stock Replacement vs PowerMax Upgrade - Which Is Right?

The 848212-5001S restores factory VGT boost behavior and drivability - the correct choice for a stock or mildly modified truck focused on reliability. If your build has progressed beyond stock fueling or you want additional airflow headroom, the Stage 1 PowerMax 773540-5001S supports up to 500 HP, and the Stage 2 GT4094VA PowerMax supports up to 575 HP. Both upgrades are drop-ins for the same LLY/LBZ/LMM range. Stay with the 848212-5001S if factory-spec restoration is the goal. Verify your engine code and confirm your build plan, then this is the correct part to order.

What the Revised Center Housing Changes

The 848212-5001S ships with every design update Garrett has incorporated into this platform. The most significant improvement is the revised center housing featuring three cobalt pins - added to reduce housing distortion and improve vane actuation accuracy. Combined with cobalt VGT vane pins, VSR factory balancing, and end-of-line inspection, every unit leaves the factory to tighter tolerances than an independently remanufactured core can reliably match.

The VGT control valve and vane position sensor ship with the turbo - two components that are commonly replaced at the same time and do not need to be sourced separately for this swap. LLY trucks require the 771864-0001 vane position sensor adapter harness in addition to these included components.

What Comes in the Box

The 848212-5001S includes three components for the core turbo replacement. Gaskets are not included - source the AP0162 installation kit before beginning the swap.

• New Garrett GT3788VA turbocharger (complete assembly)
• New VGT control valve
• New VGT position sensor

Gaskets and installation hardware are sold separately via the AP0162 turbocharger installation kit. LLY trucks also require the 771864-0001 vane position sensor adapter, sold separately.

848212-5001S Technical Specs

Confirm engine code, year, and application before ordering. The 848212-5001S covers LLY, LBZ, and LMM engine codes only.

Engine code confirmed as LLY, LBZ, or LMM and year is 2004.5-2010? This is the correct Garrett stock replacement to order.

Fitment Coverage - 848212-5001S

This turbocharger covers LLY, LBZ, and LMM engine codes across the 2004.5-2010 production range. Confirm your engine code via your VIN before ordering.

• 2004.5-2005 Chevrolet Silverado 2500 / 3500 6.6L LLY (VIN 2)
• 2006-2007 Chevrolet Silverado 2500 / 3500 6.6L LBZ (VIN D)
• 2007.5-2010 Chevrolet Silverado 2500 / 3500 6.6L LMM (VIN 6)
• 2004.5-2005 GMC Sierra 2500 / 3500 6.6L LLY (VIN 2)
• 2006-2007 GMC Sierra 2500 / 3500 6.6L LBZ (VIN D)
• 2007.5-2010 GMC Sierra 2500 / 3500 6.6L LMM (VIN 6)
• 2004.5-2010 Chevrolet Express 2500 / 3500 / 4500 6.6L LLY, LBZ, LMM
• 2004.5-2010 GMC Savana 2500 / 3500 / 4500 6.6L LLY, LBZ, LMM

Cross Reference Numbers for 848212-5001S

If your existing turbo, dealer invoice, or purchase order carries any of the numbers below, the 848212-5001S is the confirmed direct replacement. Match your number here before ordering.

100TBC562S, 112627266, 12626103, 12632474, 12632475, 12635330, 12635331, 12636330, 12639460, 1700250350, 170-025-0350, 1700251587, 170-025-1587, 1700251589, 170-025-1589, 1700251761, 170-025-1761, 19329915, 19329916, 2T105, 2T-105, 57739900004, 7358PP, 7358-PP, 736554-0014, 7365540015, 736554-0015, 736554-5014, 736554-5014S, 7596220005, 759622-0005, 7900320004, 790032-0004, 7900329003, 790032-9003, 8126394600, 8299738248, 8482125001, 8482125001S, 848212-5001S, 848212-9001, 848212-9001S, 87352706, 8973525640, 8973525641, 8973525642, 8973525643, 8973525644, 8973525645, 8973525646, 897352564C, 8973527060, 8973527061, 8973527064, 8973527065, 8973527066, 8973527067, 897352706C, 8973711050, 8973711051, 8973711052, 8973711053, 8973711054, 8973711055, 8973763760, 8973868220, 8973868221, 8973868223, 8973868230, 8973868231, 8973868233, 8973878960, 8973878962, 8973878963, 8973878965, 8980023890, 8980023891, 8980023892, 8980023893, 8980023894, 8980023895, 8980033660, 8980033661, 8980033662, 8980033664, 8980117350, 8980117351, 8980117352, 8980117353, 8980117354, 8980216170, 8980216172, 8980216173, 8980216174, 8980385680, 8980385681, 8980385683, 8980658540, 8980658541, 8980658542, 8980658543, 8982016171, 97352564, 97371105, 97376376, 97387896, 98002389, 98003366, 98011735, 98021617, 98065854, 98100735, BBBD3004, BBBD3008, BBBD3010, D3004, D3008, D3010, DA2251078, DA2251079, DA2251082, DT660028, GAR 7900329003, GAR 8482125001S, GAR8482125001S, TRA 7900329003, TRA 8482125001S, TRA7900329003, TRA8482125001S

Avoid These Common Ordering Mistakes

• Skipping the LLY adapter: 2004.5-2005 LLY trucks require the Garrett 771864-0001 vane position sensor adapter harness. It is not included in this kit. Order the 771864-0001 adapter separately before starting the install if your engine code is LLY.
• Assuming gaskets are included: The AP0162 installation kit is sold separately. Order the AP0162 install kit before beginning the swap.
• Ordering this for a performance build: The 848212-5001S restores factory stock boost behavior. If your truck is tuned or fueled beyond stock and you want more airflow headroom, see the Stage 1 or Stage 2 PowerMax options instead.
• Wrong engine code: The LLY, LBZ, and LMM are the only confirmed fitments. Check your VIN (8th character) to confirm your engine code before ordering.

Before You Order - Final Confirmation

• Engine code confirmed: LLY (VIN 2), LBZ (VIN D), or LMM (VIN 6)
• Year confirmed: 2004.5-2010
• VGT control valve and position sensor confirmed included - no separate purchase needed
• LLY trucks: 771864-0001 adapter ordered separately
• AP0162 install kit ordered separately for gaskets and hardware

For a 2004.5-2010 GM 6.6L Duramax with a confirmed LLY, LBZ, or LMM engine code and a stock-spec restoration goal, the 848212-5001S is the correct brand-new Garrett GT3788VA to order - revised center housing, cobalt VGT pins, VGT control valve and position sensor included, 1-year Garrett warranty, no core required.

Frequently Asked Questions