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BRIGGS & STRATTON Gasoline Engine: Series Professional Series, 25 hp Horsepower - Briggs & Stratton Engines
BRIGGSBriggs & Stratton Engines

BRIGGS & STRATTON Gasoline Engine: Series Professional Series, 25 hp Horsepower

The BRIGGS & STRATTON Professional Series™ Gasoline Engine (MPN 44S977-0033-G1) is a 25 hp vertical-shaft engine with an electric start. It features a 1-1/8 in shaft diameter and a tapped 7/16"-20 shaft end.

SKU 3G-OTH-417284

Brand
BRIGGS
Item
& STRATTON Gasoline Engine: Series Professional Series, 25 hp Horsepower
Category
Briggs & Stratton Engines
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Technical Specifications

BRIGGS
Manufacturer Part Number
44S977-0033-G1
Type
Vertical, 1 1/8 in
Horsepower
25 hp
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BRIGGS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BRIGGS & STRATTON Professional Series™ Gasoline Engine (MPN 44S977-0033-G1) is a 25 hp vertical-shaft engine with an electric start. It features a 1-1/8 in shaft diameter and a tapped 7/16"-20 shaft end.

Frequently Asked Questions

What is the BRIGGS & STRATTON 44S977-0033-G1 engine used for?

This 25 hp vertical-shaft gasoline engine is designed for heavy-duty commercial lawn and turf equipment, such as zero-turn mowers and riding tractors. Its Professional Series™ build provides reliable power for demanding grounds maintenance applications.

What are the specifications of the BRIGGS & STRATTON 44S977-0033-G1?

This engine delivers 25 hp with a vertical shaft of 1-1/8 in diameter, tapped 7/16"-20 at the end. It features an electric start and is part of the Professional Series™. The manufacturer part number is 44S977-0033-G1.

Where to buy the BRIGGS & STRATTON 44S977-0033-G1 worldwide?

3G Electric supplies this BRIGGS & STRATTON Professional Series™ engine worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and a quote.

How to install a BRIGGS & STRATTON vertical engine?

Ensure the mounting surface is clean and the shaft aligns with the equipment's pulley or coupling. Use the tapped 7/16"-20 shaft end for secure attachment. Follow the engine manual for torque specs and break-in procedures. Always disconnect the battery before installation.

Used in

Common applications for BRIGGS
Commercial turf management — Briggs & Stratton Commercial Turf Series 27 hp vertical shaft engine (SKU 20KC43) for zero-turn mowers
Pressure washing — Briggs & Stratton XR Professional Series 9.5 lb-ft horizontal shaft engine (SKU 55EP70) for high-pressure washers
Generator power — Briggs & Stratton Professional Series 19 hp vertical shaft electric start engine (SKU 875GX9) for standby generators
Lawn mowing — Briggs & Stratton 725Exi Series 7.25 lb-ft vertical shaft engine (SKU 52YX58) for walk-behind mowers
Garden tractor — Briggs & Stratton Intek Series 11.5 hp vertical shaft engine (SKU 875GY0) for lawn tractors
Industrial pump drive — Briggs & Stratton XR Professional Series 5.5 lb-ft horizontal shaft engine (SKU 12V872) for water pumps

BRIGGS Products

3G Electric supplies BRIGGS briggs & stratton engines. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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