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Briggs & Stratton

BRIGGS & STRATTON 44S977-0033-G1 25 GHP Vertical Shaft Engine, Black

  • Based on 129 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Acme Tools
Arrives Jun 11 – Jun 13
Order within 22 hours and 44 minutes
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Features

  • electric start with 16 amp alternator dura-bore cast iron cylinder sleevefloat feed carburetor for reliable starting and operation
  • Overhead Valve (OHV) Technology
  • Dura-Bore Cast Iron Cylinder Sleeve
  • Float Feed Carburetor for reliable starting and operation

Description

Briggs & stratton vertical professional series engine is 724cc & 25. 0 gross HP. This Briggs & Stratton V-Twin has a 1-1/8" X 4-D/16" Crankshaft & a 12V electric start with 16 amp alternator. Briggs & Stratton professional series engines deliver the reliable, efficient power needed for riding lawn mowers & tractors.

Product Dimensions: 18.81 x 17.9 x 14.96 inches


Item Weight: 2 pounds


Manufacturer: Briggs and Stratton


Item model number: 44S977-0033-G1


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 11 – Jun 13

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Went awesome
Direct replacement, installed and running great. Thanks
Reviewed in the United States on August 10, 2025 by Jodie L. Carson
    • Briggs engine
Received a day early. Package was in great shape. Delivery was made by FedEx. No oil spills, or visible damage. Will install in the next day or two for an update. Looking at the quality of the engine I can tell its solid.
Reviewed in the United States on April 1, 2026 by N.
    • Works great
Fired right up after install and works great!
Reviewed in the United States on January 21, 2026 by Brent Phillips
    • briggs & stratton 25hp works like new
box came soaked in oil no dammage to box or engine very easy to install works great thank you
Reviewed in the United States on June 6, 2025 by archie zito
    • Great replacement engine
Fantastic engine. Replaced a similar engine on a Husqvarna 48” mower. Has a lot more power than similar HP Briggs Intek
Reviewed in the United States on August 11, 2025 by K
    • Governor gear failed
Catastrophic failure of the engines mechanical governor 2.5 years into using as a replacement lawnmower engine, do not buy if you want longevity.
Reviewed in the United States on March 28, 2026 by Guy
    • Perfect fit.
This was a perfect fit for my 2013 Ferris IS600Z using a legacy 44Q7775145G5 with 595730 Crankshaft. Working as it should. White smoke for about a 30 min. Box included (2) muffler gaskets with engine manual. No oil as expected.
Reviewed in the United States on August 19, 2025 by Mike Eastwood
    • Bolted right up to my 7 yr old garden tractor
Easy install only thing different is now my throttle control works reverse of what it was before. No fault of the sender put maybe a BIG "THIS SIDE UP" on the box and all the oil wouldn't leak out and all over the motor. Also by being turned upside down the oil dip stick came out and was bent, I straightened it, no biggie there but by the cap being off Styrofoam got in to the oil fill tube, I flushed engine with a quart of oil and a few pieces came out. I'll do a oil change at 1 hour and again at the 5 hour break in period. If I wasn't in need of the motor I'd of sent it back. Also and again no fault of the sender but this order kept having delivery extended a day, 3 times! I finally went and picked it up myself ... show more
Reviewed in the United States on June 4, 2020 by R. Murphy

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