TH400

20240022LS

SportMonster Chevy TH400 Transmission & Torque Converter

$3,048.00 USD

$3,209.00 USD
SALE 5% OFF
50302144905525
CD20240022LS
Requires $600.00 USD Core Fee
HIGH DEMAND!

ORDER NOW AND WE'LL

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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
  • Master Overhaul Kit: Comprehensive rebuild kit ensures the transmission is restored to like-new performance and reliability for long-term use.
  • Shift Correction Kit: Enhances shift quality, timing, and responsiveness, delivering smoother and more precise shifts.
  • New Pump Components: Provides consistent fluid pressure for reliable operation and extended durability.
  • New Modulator: Ensures accurate shift control, improving drivability and efficiency.
  • Teflon Sealing Ring Kit: Reduces leaks and improves sealing for enhanced reliability and long-term performance.
  • New Separator Plate: Optimizes fluid flow for consistent, smooth shifts and increased durability.
  • New Manual Shift Shaft: Ensures precise manual shifting and long-lasting performance.
  • Stage-1 Clutches: High-performance clutches provide superior torque-handling and durability for heavy-duty or performance applications.
  • Kolene Steels: Heat-treated steel plates resist wear and improve friction consistency, extending transmission life.
  • Chrome Pan: Adds durability and style, with corrosion resistance and easier maintenance.
  • PREVENT TRANSMISSION FAILURE: Watch our step-by-step installation video https://monstertransmission.com/pages/how-to-properly-install-a-transmission
ABOUT THIS PRODUCT

Harness unstoppable power with a SportMonster TH400 transmission—a 3-speed automatic built to handle extreme torque and heavy-duty applications. Known for its bulletproof durability, the SportMonsterTH400 is the ultimate choice for muscle cars, trucks, and high-performance builds. Engineered with reinforced internals and precision components, this transmission delivers smooth shifts and unmatched strength, making it a favorite for racing, towing, and off-road domination.

FLUID AMOUNT

  • 11 Quarts Of Dexron VI Full Synthetic

INSTALL TIME

  • 7 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.