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Power your truck with the TrackMonster Allison 1000 transmission—a legendary 5- or 6-speed automatic designed for performance and reliability. Renowned for its reliability and smooth performance, the Allison 1000 is an excellent choice for everyday driving, light towing, and standard diesel applications. Engineered to handle tough demands, it features advanced electronic controls, seamless shifts, and reinforced internal components to deliver long-lasting, consistent performance.
This TrackMonster Transmission is manufactured by our strategic manufacturing partner, BD Diesel. These units are not built in-house.
Note
In-stock transmissions usually ship the next business day.
Custom builds or out-of-stock units typically ship within 4–6 weeks.
Need it sooner? Call us — we can often make special arrangements.
We offer the most comprehensive coverage in the industry:
Extend warranties are included on all Transmission Purchases read more HERE.
No — we offer a $364 Flat-Rate One-Way Shipping to any Address.
If you find a better rate, you're welcome to arrange your own shipping.
No, fluid must be purchased separately. We offer special discounted prices and even cheaper shipping options when you bundle with our fluid at checkout.
Returning your core is simple. Once your old transmission is ready for pickup, you can start the return process online or call our Customer Service Team.
Please Note:
Our goal is to make this process as easy as possible. If you have questions about your core return, give us a call and we’ll help.
Start Core Return