CHEVROLET 6320370046 Automatic Transmission 6.6L

( Brand: Chevrolet ), ( Manufacturer Part Number: 6320370046 ), ( Vintage Part: No ), ( Type: Automatic Transmission ), ( Condition And Options: At; 6.6l, 4x4 )

Review CHEVROLET 6.6l Speed Allison Automatic Transmission fits SILVERADO 2500 3500 4X4 2004

Meticulously Engineered 2004 Chevrolet Silverado 6.6L 4x4 Allison Automatic Transmission (Part No. 6320370046)

Embark on a journey of power and precision with the 2004 Chevrolet Silverado 6.6L 4x4 Allison Automatic Transmission (Part No. 6320370046). This high-performance transmission is a testament to Chevrolet's commitment to delivering exceptional quality and unparalleled durability.

Crafted with a 6.6L Diesel V8 engine, this Silverado model offers a robust foundation for your off-road adventures or heavy-duty towing needs. The Allison 1000 Series Automatic Transmission, specifically the 1000 SP, seamlessly integrates with this engine, providing a smooth and responsive driving experience.

The Allison 1000 SP transmission boasts a torque capacity of up to 1,250 lb-ft, ensuring effortless acceleration and reliable performance even under the most challenging conditions. Its advanced torque converter lock-up technology minimizes slippage, reducing fuel consumption and optimizing power delivery.

Equipped with a robust cast iron case and high-strength steel gears, this transmission is built to last. Its compact design ensures optimal clearance for underbody components, making it ideal for off-road applications. The transmission's electronic control system offers precise shift points and smooth gear changes, enhancing driver comfort and control.

Safety features, such as the Tow/Haul mode and Grade Braking, are thoughtfully integrated into the Allison 1000 SP transmission. These features provide enhanced control during descent and improved towing capabilities, making this Silverado model a reliable companion for your heavy-duty tasks.

In summary, the 2004 Chevrolet Silverado 6.6L 4x4 Allison Automatic Transmission (Part No. 6320370046) is a perfect blend of power, durability, and technology. Whether you're tackling rugged terrains or hauling heavy loads, this transmission offers the performance and reliability you need to conquer any challenge. Experience the difference with this exceptional Chevrolet Silverado transmission.

The Chevrolet Silverado 2500/3500 (6.6L 4x4 Allison Automatic Transmission) from the year 2004 offers a mix of advantages and potential drawbacks. Here's a breakdown:

1. Powerful Engine: The 6.6L V8 Duramax Diesel engine delivers a substantial amount of torque, which is beneficial for towing and hauling heavy loads.

2. Robust Build Quality: Known for its durability, the Silverado 2500/3500 is built to withstand heavy-duty tasks, making it suitable for construction, farming, or other demanding uses.

3. Allison Automatic Transmission: This transmission offers smooth shifts and is well-regarded for its ability to handle the torque of the Duramax engine effectively.

4. Towing Capacity: With a maximum towing capacity of up to 13,000 lbs, it can easily handle large trailers or heavy loads.

1. Age: As a 2004 model, it may have aged components that could require maintenance or replacement. This includes parts like the transmission, suspension, and brakes.

2. Fuel Efficiency: Older diesel engines, such as the one in the Silverado, are generally less fuel-efficient compared to newer models.

3. Interior Quality: The cabin may not match the quality of more modern trucks, with some parts feeling less refined.

4. Availability of Parts: As a older model, finding replacement parts, especially for non-standard options, might be challenging and potentially expensive.

The Chevrolet Silverado 2500/3500 (6.6L 4x4 Allison Automatic Transmission) is a robust and powerful vehicle, well-suited for heavy-duty tasks. However, its age and potential need for maintenance should be considered, along with the trade-off between fuel efficiency and power.

If you need a heavy-duty truck for towing or hauling, and you're comfortable with the potential maintenance costs associated with an older vehicle, this Silverado could be a good choice. On the other hand, if you prioritize fuel efficiency, a more modern model might be more suitable. It's essential to thoroughly inspect and test-drive any used vehicle before purchasing, to ensure it's in the condition you expect.

Details:

Stock Number: 00019706. If you encounter an issue, contact your Sales Representative BEFORE remove the part from vehicle. Always double check compatibility.

James Auto Truck Parts Mission Statement: St. Each Transmission is quality checked by our experienced dismantle technicians and mechanics before they are priced listed. Make / model: CHEVROLET SILVERADO 2500 PICKUP. Odometer: 246587 Miles.

000 6.6L AT 5SPD 4X4 M74. James Auto Truck Parts adheres to the strict Gold Seal Code of Ethics. Every measure is taken to ensure the parts are of highest quality and in condition described or better upon receipt. Color: Maroon.

Regarding engines, accessories such as alternators, starters, water pump, intake and exhaust manifolds, fuel injectors, carburetor, flywheel, brackets, oil pressure switches, thermostats, smog emission devices, turbos, high pumps, injector timing belts are complimentary do not necessarily come with the engine.

part #: 6320370046 prices

• $1256.10-$2659.99

specifications autotransmissionsgo:

• for models: 2500, 3500, 4x4, Silverado
• for makes: Allison, Chevrolet
• for years: 2004
• brand: Chevrolet
• mpn: 6320370046
• vintage part: No
• type: Automatic Transmission
• condition and options: At; 6.6l, 4x4

offer autotransmissionsgo:

• best offers: True
• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: January 20, 2026

seller autotransmissionsgo:

• # reviews: 6611
• city: Saint James, Missouri
• rating: 100.0%

shipping autotransmissionsgo:

• service: Flat Rate Freight
• type: Fixed
• class: Freight
• cost: $350.00

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

returns autotransmissionsgo:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

payments autotransmissionsgo:

• wallet: Paypal
• credit card: Discover
• other

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