ALLISON

1021002240A

SportMonster Chevy Allison 1000 Transmission & Torque Converter

$5,699.00 USD

$5,999.00 USD
SALE 5% OFF
50801904386357
CD1021002240A
Requires $2,000.00 USD Core Fee
HIGH DEMAND!

ORDER NOW AND WE'LL

PRIORITIZE YOUR SHIPMENT

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FREE SHIPPING

IF BUNDLED WITH FLUID and EXTEND! Covers One Way Only

PRODUCT OPTIONS
Questions? Call Us 800-708-0087
Features
  • Increased Clutch Count: Each transmission features an increased number of clutches across various clutch packs, enhancing durability and performance.
  • High Energy Frictions: Utilization of high-energy friction materials improves heat resistance and longevity.
  • Revised Oil Circuits: Modifications to oil circuits enhance lubrication and cooling efficiency.
  • New Converter Lock-Up Valve: Incorporation of a new converter lock-up valve boosts lock-up pressures, improving torque converter performance.
  • New A & B Trim Valves: Installation of new A & B trim valves delivers full line pressure to the clutches, ensuring consistent engagement.
  • Aluminum HD Deep Transmission Pan: Each transmission comes with a heavy-duty aluminum deep transmission pan, increasing oil capacity by 3.5 quarts and aiding in heat dissipation.
  • Dyno Tested: Every transmission undergoes rigorous dynamometer testing to ensure performance and reliability.
  • PREVENT TRANSMISSION FAILURE: Watch our step-by-step installation video https://monstertransmission.com/pages/how-to-properly-install-a-transmission
ABOUT THIS PRODUCT

Power your truck with the SportlMonster Allison 1000 transmission - a legendary 5- or 6-speed automatic designed for heavy-duty performance and reliability. Known for its exceptional durability and smooth operation, the Allison 1000 is the ultimate choice for towing, hauling, and high-torque diesel applications. Engineered to handle extreme demands, it features advanced electronic controls, seamless shifts, and reinforced internal components to deliver long-lasting, consistent performance. Whether you're towing massive loads or doing daily driving, the SportlMonster Allison 1000 transmission provides the strength, precision, and dependability to dominate any road or job. It's built tough and engineered to last!

FLUID AMOUNT

  • 18 Quarts Of Dexron VI Full Synthetic

INSTALL TIME

  • 9 Hours

WARRANTY

Note

  • 3 Year Warranty Unlimited Miles
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Frequently Asked
When Will My Transmission Ship?

In-stock transmissions usually ship the next business day.

Custom builds or out-of-stock units typically ship within 2–4 weeks.

Need it sooner? Call us — we can often make special arrangements.

What Is the Warranty?

We offer the most comprehensive coverage in the industry:

  • StockMonster: 1 Year (Extendable to 4 Years with Extend)
  • StreetMonster: 2 Years (Extendable to 5 Years with Extend)
  • SportMonster: 3 Years (Extendable to 6 Years with Extend)
  • TrackMonster: 1 Year (Extendable to 4 Years with Extend)

Extend warranties are optional add-ons available during checkout.

Is Shipping Cheaper if I Use a Commercial Address?

No — we offer a $299 Flat-Rate One-Way Shipping to any address, commercial or residential.

If you find a better rate, you're welcome to arrange your own shipping.

Does this Transmission include Fluid?

No — fluid must be purchased separately. We offer special discounted prices and even cheaper shipping options when you bundle with our fluid at checkout.

How do I Return my Old Transmission Core?

Returning your core is simple. Once you are ready to return your core, you can initiate the return process in one of two ways:

  • Fill out our Core Return Form (available online) using the button below.
  • Or call our Customer Service Team at 800-708-0087 to schedule your return freight pickup.

Please Note:

  • The customer is responsible for the return shipping cost.
  • A flat-rate fee of $299 will be deducted from your core refund to cover return freight and handling. If Round Trip Shipping is not Prepaid Upfront.
  • The core must be the same model and not cracked or damaged beyond rebuild.

Our goal is to make this process as seamless as possible — if you have questions about your core return, just give us a call.