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Briggs & Stratton Professional Series 25HP 44S977-0033 1-1/8" x 4-5/16" Shaft
25 HP Gas Engine Electric Start 44S977-0033 Vertical Shaft

44S977-0033 Vertical Shaft On Sale
Price: $1,475.95
Sale Price: $1,390.00

Availability: Usually Ships in 24 Hours
Product Code: 44S977-0033


Briggs & Stratton 44S977-0033

1-1/8" x 4-5/16" Shaft Vertical Shaft 25HP

In-Stock Now

At Carroll Stream, we carry the B&S 25-hp gas motor with electric start for zero-turn and riding mowers, tractors and a wide range of other applications. This is a small and powerful four-stroke OHV small engine designed to deliver increased fuel efficiency and decreased emissions without sacrificing power and torque. This Briggs & Stratton Professional series motor is virtually maintenance-free and will outlast almost any motor in its class.

This powerful Briggs & Stratton motor is one of the best, most versatile, rugged motors on the market. Buy this B&S 25-hp gas motor for your most important projects to ensure you get the job done right without breaking your budget. Order online to enjoy our fast, free shipping, or give us a call at 1-888-208-2088 to have our team help you find exactly what you need before you buy.

Browse all of our Briggs & Stratton vertical shaft options:

Intek Series 21R807-0072-G1 344cc (Replaces 21R707-0011-G1)
31R907-0006-G1 500cc
Powerbuilt Series 31R976-0016-G1 Intek 500cc
Intek Series 33S877-0019-G1 540cc (Replaces 33R877-0003-G1)
356776-0006-G1 V-Twin 570cc (Replaced by 356776-0013-G1)
Professional Series 40T876-0002-G1 656cc (Superseded by 40T876-0009-G1)
Professional Series 44S977-0032 724cc
Professional Series 44S977-0033 724cc
Professional Series 44T977-0009 724cc (Replaces 44T877-0001)
Professional Series 49T877-0004-G1 810cc
49R977-0004 810cc
49E877-0005-G1 Vanguard EFI 810cc
  • Specifications
  • Make
  • Briggs & Stratton
  • Model
  • 44S977-0033
  • Type
  • Small Engine
  • Fuel
  • Gas Unleaded 86 Octane or Higher
  • Engine Type
  • 4 Stroke OHV V-Twin
  • Bore/Stroke
  • 3.12 X 2.89 in
  • Displacement
  • 724 cc
  • Max Power
  • 25 HP
  • Starting Type
  • Electric Start
  • Charging System
  • 16 AMP W/Regulator
  • Starting System
  • Stater, 12 Volt Heavy Duty
  • Dimensions (L x W x H)
  • 18.25 x 19.25 x 14.25 in.
  • Muffler Included
  • No
  • Fuel Tank
  • No
  • Dry Engine Weight
  • 89lbs.
  • Shaft Type
  • Keyed - Straight
  • Shaft Diameter
  • 1-1/8" Diameter, 1/4" Keyway
  • Shaft Length
  • 4-5/16" Total
  • Shaft I.D. Thread Size
  • 7/16"-20 Drilled and Tapped
  • Bolt Pattern
  • 4 Bolt
  • Oil System
  • Pressure lubrication, Oil Cooler
  • Oil Capacity
  • 2 Qts
  • Intake
  • Low Vacuum Purge Port
  • Reduction Type
  • None
  • Engine Cooling Type
  • Forced Air Cooling
  • Features
  • 2 Year Limited Consumer Warranty
  • 1 Year Limited Commercial Warranty
  • Mechanical Governor
  • 4 Stroke OHV Small Engine
  • Cartridge Style Air Filter
  • Dipstick in Crankcase
  • Cross Reference Guide
  • Kohler: CV750
  • Accessories
  • Throttle Linkage Kit
  • User Manual

Related accessories & parts:
Genuine Briggs & Stratton Filter Side Muffler MUF0626 Genuine Briggs & Stratton OEM Air Filter 4233, 792105 Genuine Briggs & Stratton OEM Oil Filter 696854 Pack of 4 Opti-4 10W30 34 oz bottle for engines up to 31hp
Sale Price: $139.99

Sale Price: $17.95

Sale Price: $12.80

Sale Price: $79.95

Briggs & Stratton Muffler MUF0626 Briggs & Stratton OEM Air Filter 792105 Briggs & Stratton OEM Oil Filter 696854 Opti-4 10W30 34 oz bottle for engines up to 31hp 43121
Pack Of 2 Kinetix High Performance Oils and Lubricants SAE 30 1 Quart Small Engine Oil
Sale Price: $15.50

Kinetix High Performance Oils and Lubricants SAE 30 1 Quart Small Engine Oil 80003

Average Customer Review: Average Customer Review: 4.5 of 5 4.5 of 5 Total Reviews: 2 Write a review.

  0 of 0 people found the following review helpful:
4 of 5 good engine, not enough information September 16, 2019
Reviewer: Anonymous Person from Andover, MA United States  
The engine was a good and easy fit, but the paperwork and online resources did not provide guidance on automatic choke in lieu of manual choke, oil sensor port (none), or the vacuum port.

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  0 of 0 people found the following review helpful:
5 of 5 Excellent Service March 18, 2019
Reviewer: Russ Hicks from Pageland, SC United States  
Carroll Stream was very prompt and very thorough in both quality and customer service. I received the product exactly when they said I would and everything was received in good order. The Briggs and Stratton engine was exactly the replacement that I needed and was easily changed and is working perfect. I would definitely recommend using Carroll Stream for any small engine purchase and if the need arises in the future I would also use them again.

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