6R140

111614040T

RoadReady Ford 6R140 Transmission & Converter

$4,699.00 USD

$4,999.00 USD
SALE 6% OFF
51306806083893
CD111614040T
Requires $1,500.00 USD Core Fee
HIGH DEMAND!

ORDER NOW AND WE'LL

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PRODUCT OPTIONS
Questions? Call Us 800-708-0087
Features
  • Fully remanufactured for exceptional durability and long service life
  • Complete Overhaul Kit: Includes all critical components to restore the transmission to like-new performance, ensuring reliability and durability.
  • PREVENT TRANSMISSION FAILURE: Watch our step-by-step installation video https://monstertransmission.com/pages/how-to-properly-install-a-transmission
ABOUT THIS PRODUCT

Built for Ford Super Duty workhorses (F-250, F-350, F-450), the RoadReady 6R140 is a 6-speed automatic designed for high-torque diesel applications and serious workloads. Expect smooth, controlled shifts, a wide ratio spread for confident launches and efficient highway cruising, and dependable temperature management under sustained towing and hauling.

Manufactured to OEM-equivalent standards by a Monster-Approved manufacturing partner, each unit is precision-assembled and tested for reliable power delivery and long-term durability—ideal for fleets, work trucks, and demanding daily use.

WARRANTY

Note

  • 6 Year Warranty Unlimited Miles (3 Year Monster + 3 Year Extend)

NOTE

  • This RoadReady unit is manufactured by a Monster-Approved vendor and is not built in-house by Monster Transmission.
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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: 4 Year (1 Year Manufacture, 3 Years from Extend)
  • StreetMonster: 5 Years (2 Year Manufacture, 3 Years from Extend)
  • SportMonster: 6 Years (3 Year Manufacture, 3 Years from Extend)
  • TrackMonster: 4 Year (2 Year Manufacture, 3 Years from Extend)

Extend warranties are included on all Transmission Purchases read more HERE.

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.

How much Horsepower and Torque can your 6R140 Handle?

Our 6R140 transmission builds are designed for durability and performance across different levels of power and use:

  • StreetMonster: Handles up to 100 HP over stock. Great for towing and mild tunes.
  • SportMonster: Built for up to 600 HP. Ideal for tuned trucks, heavy hauling, and upgraded turbo systems.
  • TrackMonster: Supports 700+ HP. This race-ready build includes billet internals for extreme durability and max torque handling.

All units are dyno-tested and purpose-built to outperform the factory 6R140 in every category.

Is the Converter Single or Multi-Clutch?

We include a premium billet torque converter with each 6R140 transmission, matched to your build level:

  • StreetMonster: Single-Clutch Billet Converter – reliable for daily use and light towing.
  • SportMonster: Dual-Surface Billet Converter – increases clutch surface area and lockup strength.
  • TrackMonster: Multi-Clutch Billet Converter – built for high-performance applications and extreme torque loads.

Every converter is balanced and tested for max durability and performance.

Are New Solenoids and Electronics Installed?

Yes — all solenoids and electronic components are replaced or fully remanufactured as part of our standard 6R140 build process.

  • New or professionally tested solenoid pack
  • Updated internal wiring harness

This ensures clean shifts, stable line pressure, and full compatibility with your vehicle’s ECM and TCM.

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.