SKU: 81495857680

Merchant Automotive MAximum Pro Series Allison 1000 Transmission 04.5-05 6.6L GM Duramax LLY

Sale price$2699.55 Regular price$2999.50
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

Merchant Automotive MAximum Pro Series Allison 1000 Transmission 04.5-05 6.6L GM Duramax LLYIt's true, the Allison 1000 transmission originally set the bar pretty high upon its initial unveiling on the first Duramax equipped Chevy back in 2001. Many looked to this transmission as being the cure for any future transmission issues. And to some degree, the Allisons have proven themselves, but as with all things, time, hard work, and horsepower will cause them to fatigue and fail. Fortunately, the professionals at Merchant Automotive know the

It's true, the Allison 1000 transmission originally set the bar pretty high upon its initial unveiling on the first Duramax-equipped Chevy back in 2001. Many looked to this transmission as being the cure for any future transmission issues. And to some degree, the Allisons have proven themselves, but as with all things, time, hard work, and horsepower will cause them to fatigue and fail. Fortunately, the professionals at Merchant Automotive know the ins and outs of properly building an Allison to deliver the reliability you need from your truck.

Merchant Automotive has a long history of building transmissions for customers from all over the country who depend on their trucks for many types of applications. The components in the Maximum Transmissions were selected specifically based on our experience working exclusively on the GM Duramax trucks with an Allison transmission.

Designed to optimize the potential of the Allison transmission even with additional power, the professionals at Merchant Automotive take the proven reliability of their Work Series and increase capacity even more with additional clutch apply area, heavy-duty friction material, and additional hydraulic pressure to ensure maximum holding capacity. For use with engines modified above stock, or aftermarket components (proper tuning and gearing required).

WARRANTY INFORMATION:
  • Two Year, Unlimited Mileage Warranty

CORE RETURN INFORMATION: You will be required to return your original transmission to Merchant Automotive to receive your core deposit back. Your transmission must match the product purchased (model and year) and be assembled. A completely good transmission will get you a full core refund. However, it is understood that you may have some missing parts and/or damage and we would like to get you as much of a refund as we can for the good usable parts.

Below are examples of items that may reduce the maximum credit:
  • Damaged or missing bell housing $300
  • Damaged or missing rear housing $300
  • Damaged or missing planetary $600
  • Unassembled core $200
  • Missing convertor $200
IMPORTANT FREIGHT NOTE:
The Required Shipping Charge Includes The Return Shipping of the Core Pickup 
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81495857680

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4.4 ★★★★★
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Ami O.
Grantham, US
★★★★★ 4
Not terrible
I ultimately returned this - just due to the size. I didn’t measure as closely as needed and this was just too big for my needs. Build quality- I’d give it a 5 out 10. Other reviews compare the plastic product to something you’d pick up at a dollar store. I don’t disagree with that. Seemed to function as expected. Drawers slide out without sticking. It does look good- crisp clean appearance. No assembly required. Value for the money? No- I don’t think so. That’s my reasoning for 4 stars- cost is too high for the mediocre quality
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Reviewed in the United States on July 1, 2025
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rebeccacarol
Natrona Heights, US
★★★★★ 5
Worth the money
It's very compact, cleaned up clutter in the bathroom
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Reviewed in the United States on March 7, 2025
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Carla L. Murphy
Chelsea, US
★★★★★ 5
Quality
Value for money, size, looks
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Reviewed in the United States on September 11, 2025
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Marcell
Houston, US
★★★★★ 5
De buen material
Tiene buen espacio me gustó mucho
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Reviewed in the United States on January 7, 2026
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Adri Warner
Cuba, US
★★★★★ 5
Bathroom counter organizer
I bought this to try and help keep our bathroom counter neat and tidy. It fits perfectly between our sinks and it hold all of the little bottles and other bathroom stuff. This is very sturdy, and doesn’t feel cheap at all. I am happy with my purchase!
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Reviewed in the United States on July 7, 2024

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