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TH400 Stage II

Marsoni M251S
Sale price$1997.50
Pay 4 payments of $499.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
TH400 Stage IITH400 Stage 2 (Up to 1500 FWHP) AVAILABLE IN 3 SPEED OR 2 SPEED PG PATTERN EA Billet Pro Transbrake ( Pattern of Your Choice) Reverse Shift Pattern Safety Reverse Lockout EA 210 350psi Adjustable Pressure Regulator Case is Media Blasted and Prepped for Racing Chevy Pattern Standard (SFI Bell Available for Additional Charge) Billet Hardened Stator Support 300M Input Shaft CNC Forward Drum for over size splines Intermediate Snap Ring Case Support Billet
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Your TH400 Stage II orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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You'll receive a tracking link by email once your TH400 Stage II ships.

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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
4.7 ★★★★★
Based on 132 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
Perfect fit
As advertised perfect match and cheap.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 6, 2024
D
Verified Purchase
Donivan d.
Draper, US
★★★★★ 5
Good
Works great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2024
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 1
Cheap
Cheaply made
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
R
Verified Purchase
Rhbones
Omaha, US
★★★★★ 5
Works for my 2011 115hp Etec
Size: For 75-250 HP
Exact fit and cheaper than a trip to a repair shop. Make sure you have the proper gasket sealer, a good scrapper that's not going to dig into the sealing surface, and tools for the job. I went on my computer and downloaded a video that walked me through the process. I'm a mechanic by trade but wanted to ensure everything was correct. I've been running the motor now for a couple of months. Peeing just as it's supposed to. No more delivering, waiting, and retrieving my boat from the shop for its routine service. Just follow your owner's manual to make sure you do all the necessary maintenance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2025
C
Verified Purchase
Chelsey R
Fort Morgan, US
★★★★★ 5
Great replacement
Size: For 5.5HP 6HP 7.5HP
Works as it should. Easy to swap out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2025

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