SKU: 21481930421

BD Roadmaster Allison 1000 Transmission & Torque Converter Package 04.5-05 GM 6.6L Duramax LLY 4WD

$3032.10 $3369.00
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

BD Roadmaster Allison 1000 Transmission & Torque Converter Package 04.5-05 GM 6.6L Duramax LLY 4WDIf your Allison 1000 is starting to show its age or you're looking for a solid upgrade to handle more towing, tougher terrain, or just everyday use with confidence, the BD RoadMaster transmission package is exactly what you need. Built specifically for the 2004. 52005 Duramax LLY. This transmission isnt just a basic rebuild, its a carefully engineered solution designed to bring enhanced durability and performance to one of GMs most popular platforms.

If your Allison 1000 is starting to show its age or you're looking for a solid upgrade to handle more towing, tougher terrain, or just everyday use with confidence, the BD RoadMaster transmission package is exactly what you need. Built specifically for the 2004.5–2005 Duramax LLY.

This transmission isn’t just a basic rebuild, it’s a carefully engineered solution designed to bring enhanced durability and performance to one of GM’s most popular platforms. The magic starts with a modified valve body that improves overall clutch performance and lifespan. Inside the transmission, BD keeps the stock clutch counts, but doubles the torque-holding capacity in the failure-prone C2 and C4 clutch packs, giving you far better holding power and way less slip, especially when towing or under heavy load. To help keep transmission temperatures under control, the RoadMaster package includes BD’s signature deep cast aluminum pan, which adds an additional 3.5 quarts of fluid capacity and helps dissipate heat much more effectively than stock. Every RoadMaster transmission also comes with BD’s billet ProForce torque converter. This converter is designed to deliver strong, consistent clutch engagement, even when the heat is on. Whether you're tackling steep grades with a trailer or cruising empty, the ProForce torque converter ensures your truck responds smoothly and confidently.

Before it ships, each unit is dyno tested for quality and performance. When it comes to peace of mind and real durability, the BD RoadMaster doesn’t mess around, it’s built to last and ready to work.

SHIPPING POLICY - Due to the size and weight of transmissions, they cannot be shipped through traditional couriers, such as UPS, FedEx, USPS, etc. and MUST be shipped via truck freight. We do not offer free shipping on transmissions, however, we do offer a very competitive rate charged at checkout. Once your core transmission is ready for pick up, you just need to give us a call or send us an e-mail with your original order number and the core tag on the transmission, and we can supply you with a quote on the return shipping as that is not covered in the original shipping cost. Otherwise, we give you the option to coordinate the return shipping on your own and independently pay your courier of choice. As always, if you have any questions, give us a call or send us an e-mail.

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: 21481930421

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AlHerVal
Pawtucket, US
★★★★★ 5
True to size
Color: Lake Green, Size: Large
Ordered this because my husband has ordered tank tops from this company so I had something for reference, but this ran true to size and fit my husband great. He’s a size L. The shirt had like a dry fit feel to it. It was breathable and was pretty wrinkle resistant. We’ve washed and dried it a few times and it doesn’t get crazy wrinkles. It’s not too thick so it’s great for an occasion during warmer weather. There was a huge variety of different styles of shirts. For the price it’s great.
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Reviewed in the United States on March 5, 2026
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Lynn
Pawtucket, US
★★★★★ 3
Stubborn Wrinkles
Color: Black, Size: XX-Large
The shirt came vacuum sealed. After two washings the wrinkles are still there. Beautiful shirt but not wearable yet. I'll try steaming it! It fits well.
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Reviewed in the United States on May 2, 2026
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Cam L.
Chelsea, US
★★★★★ 5
Good fit
Color: Classic Blue, Size: X-Large
Soft and good color.
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Reviewed in the United States on May 6, 2026
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Sandy Rainford
Charlottesville, US
★★★★★ 5
Material
Color: Wine Red, Size: XX-Large
Beautiful material and perfect price
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Reviewed in the United States on May 3, 2026
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John Lewallen
Pawtucket, US
★★★★★ 5
Casual Crew Neck Summer Shirt
Color: Denim Blue, Size: XX-Large
Ordered the dark blue. It fits great and looks wonderful on. Very comfortable! Good value, and feels well made. The fabric is just right – not too thin, or thick. I wore it with a navy blazer and beige pants to an outdoor event (shade and sun) and was totally comfortable.
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Reviewed in the United States on June 2, 2026

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