# BD Diesel Duramax Allison Transmission & Converter Package - Chevy 2004.5-2006 LLY 4WD

When you purchase a BD Transmission and Torque Converter package, you are getting a matched set that has been dyno tested together for ultimate performance, and reliability. Every transmission comes with BD's own Heavy Duty pan that adds extra fluid capacity and case strength. For towing, street or track, when it comes to a dependable transmission that will stand up to your diesel's power and torque demands, the clear choice is BD.

-   Riveted piston ensures alignment & eliminates vibration or embrittlement from welding
-   Self-centering trapezoid teeth design increases contact decreases wear and chatter
-   Billet Input Shaft to take the "snap" from rapid throttle and high horsepower
-   BD Aluminum HD deep transmission pan, increases oil capacity by 3.5qt
-   Furnaced brazed turbine fins for improved fluid coupling efficiency
-   New A & B trim valves deliver full line pressure to the clutches
-   Reduced overall weight by 12lbs compared to competitors
-   New convertor lock up valve to boost lock-up pressures
-   Clutch Count: C2 7 clutches (17% increase over stock)
-   Clutch Count: C3 7 clutches (75% increase over stock)
-   Clutch Count: C1 8 clutches (14% increase over stock)
-   Clutch Count: C4 7 clutches (17% increase over stock)
-   Clutch Count: C5 7 clutches (17% increase over stock)
-   New sprag components ensure long term durability
-   Thrust bearings - not plastic thrust washers
-   Enhanced Stall - Street/Towing applications
-   Increase The Durability Of Your Drivetrain
-   Taller cover can be rebuilt more often
-   HD springs absorb shock of engagement
-   Cast stator designs maximizes torque
-   Eliminates warpage from clutch heat
-   Aluminum HD Deep Transmission Pan
-   Each transmission is dyno tested
-   Torque Convertor Enhanced Stall
-   Engineered tighter tolerances
-   High energy GPZ(TM) frictions
-   Stamped Forged 1 Piece Cover
-   High Energy Clutch Material
-   Stamp forged 1-piece cover
-   More Efficient Operation
-   Increased Clutch Count
-   Trapezoid teeth design
-   No Race Abuse Covered
-   Revised oil circuits
-   Furnace Brazed Fins
-   TORQUE CONVERTOR:
-   TRANSMISSION:
-   Triple Disc

This Part Fits:

Year

Make

Model

Submodel

2004-2005

Chevrolet

Silverado 2500 HD

Base

2004-2006

Chevrolet

Silverado 2500 HD

LS

2004-2006

Chevrolet

Silverado 2500 HD

LT

2004-2006

Chevrolet

Silverado 2500 HD

WT

2004-2005

Chevrolet

Silverado 3500

Base

2004-2006

Chevrolet

Silverado 3500

LS

2004-2006

Chevrolet

Silverado 3500

LT

2004,2006

Chevrolet

Silverado 3500

WT

2004-2005

GMC

Sierra 2500 HD

Base

2004-2005

GMC

Sierra 2500 HD

SLE

2004-2005

GMC

Sierra 2500 HD

SLT

2004-2005

GMC

Sierra 2500 HD

WT

2004-2005

GMC

Sierra 3500

Base

2004-2005

GMC

Sierra 3500

SLE

2004-2005

GMC

Sierra 3500

SLT

2004-2005

GMC

Sierra 3500

WT

## Details

- **Price:** 12561.15 CAD
- **Vendor:** BD Diesel
- **Type:** Transmissions

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 12561.15 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Primary
- Photo - out of package
- Photo - out of package
- Technical Bulletin
- Photo - out of package
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/bd-diesel-duramax-allison-transmission-converter-package-chevy-2004-5-2006-lly-4wd)
> Updated: 2026-06-26