Product Description

Briggs & Stratton 44S977-0032

Name: Briggs & Stratton Professional Series 25HP 44S977-0032 1" x 3-5/32" Shaft
SKU: 44S977
Price: 1356 USD
Availability: InStock

25hp 724cc Engine

Vertical Shaft Engine

In-stock Now!!

The Briggs & Stratton motor with 1Æ’?Â diameter shaft and 25 horsepower is the perfect replacement for your zero-turn and riding mowers and works well in a wide range of commercial and industrial applications. The powerful and compact design delivers plenty of torque, with decreased emissions and increased fuel efficiency compared to other motors in its class. The Briggs & Stratton Professional Series motors require less maintenance over the life the motor, and the electric start system ensures your motor starts when you need it, even in the toughest conditions.

The Briggs & Stratton Professional Series 25-horsepower motor is versatile and built to last. Order this powerful motor now to enjoy our competitive prices and fast, free shipping, or give us a call at 1-888-208-2088 to have our team of professionals help you find the right motor to fit your needs.

This engine supersedes 44Q777-5148-G5 & 44Q777-3137-G5

Engine Type: It is a gasoline-powered, 4-stroke, overhead valve (OHV) engine
Displacement: The displacement of this engine is approximately 724cc (cubic centimeters)
Power Output: This engine produces 25 horsepower (HP)
Starting System: It features an electric start system for convenient starting
Cooling System: The engine is air-cooled, which helps in maintaining optimal operating temperatures
Governor System: It is equipped with a governor system to regulate engine speed and ensure smooth operation under varying loads
Fuel Efficiency: Briggs & Stratton engines are known for their fuel efficiency, helping to reduce operating costs over time
Durability: With proper maintenance and care, Briggs & Stratton engines are designed to provide long-lasting performance and reliability
Applications: The 44S977-0032 engine can be used in various applications such as lawn tractors, zero-turn mowers, garden tractors, and other outdoor power equipment

Specifications
Make	Briggs & Stratton
Model	44S977-0032
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" Diameter, 1/4" Keyway
Shaft Length	3-5/32" 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

Use to Replace Model Numbers:

441777-0110-B1, 441777-0110-E1, 445577-1125-B1, 445677-0110-B1, 445677-0110-E1, 445677-0113-B1, 445677-0413-B1, 445677-0413-E1, 445677-0420-B1, 445677-0420-E1, 445677-0421-B1, 445677-0503-B1, 445677-0503-E1, 445677-0725-B1, 445677-0725-E1, 445677-0758-B1, 445677-0758-E1, 445677-0827-B1, 445677-0827-E1, 445677-1113-B1, 445777-0027-E1, 445777-0027-E2, 445777-0112-E1, 445777-0112-E2, 445777-0112-E3, 445777-0113-E1, 445777-0114-E1, 445777-0115-E1, 445777-0116-E1, 445777-0117-E1, 445777-0122-E1, 445777-0126-E1, 445777-0127-E1, 445777-0127-E2, 445777-0129-E1, 445777-0133-E1, 445777-0134-E1, 445777-0135-E1, 445777-0154-E1, 445777-0168-E1, 445777-0172-E1, 445777-0200-E1, 445777-0211-E1, 445777-0231-E1, 445777-0248-E1, 445777-0263-E1, 445777-0352-B1, 445777-0352-E1, 445777-0539-E1, 445777-0560-E1, 445877-0130-B1, 445877-0130-E1, 445877-0130-E2, 445877-0135-B1, 445877-0135-E1, 445877-0136-B1, 445877-0136-E1, 445877-0502-B1, 445877-0502-E1, 445877-0829-B1, 445877-0829-E1, 445877-1105-B1, 446677-0126-B1, 446677-0126-E1, 446677-0366-E1, 446677-0463-E1, 446777-0027-E1, 446777-0027-E2, 446777-0106-E1, 446777-0108-E1, 446777-0115-E1, 446777-0117-E1, 446777-0127-E1, 446777-0165-E1, 446777-0197-E1, 446777-0219-E1, 446777-0245-E1, 446777-0246-E1, 446777-0264-E1, 446777-0362-E1, 446877-0027-E1, 446977-0472-E1, 44M777-0110-B1, 44M777-0110-E1, 44M777-0110-G1, 44M777-0113-B1, 44M777-0113-E1,44M777-0113-G1, 44M777-0118-B1, 44M777-0118-E1, 44M777-0119-B1, 44M777-0119-E1, 44M777-0119-G1, 44M777-0121-B1, 44M777-0121-E1,44M777-0121-G1, 44M777-0122-B1, 44M777-0122-B2, 44M777-0123-G1,44M777-0123-G2, 44M777-0124-B1, 44M777-0125-B1, 44P777-0027-B1, 44P777-0027-E1, 44P777-0027-G1, 44P777-0127, 44Q777-0027-E1, 44Q777-0027-G1, 44Q777-0137, 44Q777-3137, 44Q777-3137, 44Q777-0137, 44Q777-0027-01, 44Q777-0027-E1, 44Q777-0027-E2, 44Q777-0027-E3, 44Q777-0027-E4, 44Q777-0027-E9, 44Q777-0027-B1, 44Q777-0027-B2, 44Q777-0027-B3, 44Q777-0027-B9, 44Q777-0027-02, 44Q777-0027-E7, 44Q777-0127, 441777-0110-B1, 441777-0110-E1, 445577-1125-B1, 445677-0110-B1, 445677-0110-E1, 445677-0113-B1, 445677-0413-B1, 445677-0413-E1, 445677-0420-B1, 445677-0420-E1, 445677-0421-B1, 445677-0503-B1, 445677-0503-E1, 445677-0725-B1, 445677-0725-E1, 445677-0758-B1, 445677-0758-E1, 445677-0827-B1, 445677-0827-E1, 445677-1113-B1, 445777-0112-E1, 445777-0112-E2, 445777-0112-E3, 445777-0113-E1, 445777-0114-E1, 445777-0115-E1, 445777-0116-E1, 445777-0117-E1, 445777-0122-E1, 445777-0126-E1, 445777-0127-E1, 445777-0127-E2, 445777-0129-E1, 445777-0133-E1, 445777-0134-E1, 445777-0135-E1, 445777-0154-E1, 445777-0168-E1, 445777-0172-E1, 445777-0200-E1, 445777-0211-E1, 445777-0231-E1, 445777-0248-E1, 445777-0263-E1, 445777-0352-B1, 445777-0352-E1, 445777-0539-E1, 445777-0560-E1, 445877-0130-B1, 445877-0130-E1, 445877-0130-E2, 445877-0135-B1, 445877-0135-E1, 445877-0136-B1, 445877-0136-E1, 445877-0502-B1, 445877-0502-E1, 445877-0829-B1, 445877-0829-E1, 445877-1105-B1, 446677-0126-B1, 446677-0126-E1, 446677-0366-E1, 446677-0463-E1, 446777-0027-E1, 446777-0027-E2, 446777-0106-E1, 446777-0108-E1, 446777-0115-E1, 446777-0117-E1, 446777-0127-E1, 446777-0165-E1, 446777-0197-E1, 446777-0219-E1, 446777-0245-E1, 446777-0246-E1, 446777-0264-E1, 446777-0362-E1, 446877-0027-E1, 446977-0472-E1, 44M777-0110-B1, 44M777-0110-E1, 44M777-0110-G1, 44M777-0113-B1, 44M777-0113-E1, 44M777-0113-G1,44M777-0118-B1, 44M777-0118-E1, 44M777-0119-B1, 44M777-0119-E1, 44M777-0119-G1, 44M777-0121-B1, 44M777-0121-E1, 44M777-0121-G1,44M777-0122-B1, 44M777-0122-B2, 44M777-0123-G1, 44M777-0123-G2,44M777-0124-B1, 44M777-0125-B1, 44P777-0127, 445777-0027-E1, 445777-0027-E2, 44P777-0027-B1, 44P777-0027-E1, 44P777-0027-G1, 44Q777-0027-E1, 44Q777-0027-G1, TVT691, 44Q777-0037, 44Q777-0037-G1, 44P777-1273-B1, 44P777-0721-B1, 44P777-0706-B1, 44P777-0153-G1, 44P777-0150-B2, 44P777-0150-B1, 44P777-0149-G2, 44P777-0149-G1, 44P777-0135-G1, 44M777-1193-B1, 44M777-0729-B1, 44M777-0720-B1, 44M777-0149-G1, 44M777-0148-B2, 44M777-0148-B1,44M777-0147-G2, 44M777-0147-G1, 44M777-0139-B1, 44M777-0135-G1,44M777-0133-G1, 445877-0132-B1, 445677-1274-B1, 445677-1262-B1, 445677-1199-B1, 445677-1198-B1, 445677-1188-B1, 445677-0128-B1, 445577-1187-G1, 445577-1187-B1, 445677-0413, 445577-0755-E1, 44Q777-3137-G5, 44Q777-3137

Please call for questions about what engines this replaces. (888-208-2088, 248-628-4638)

Any cross-reference is provided as a courtesy. You will be responsible for making sure the part number we are providing will fit your application. If you are unsure, please contact us before purchasing for help. Please have your model and serial number available.