Professional Series 25 HP 724cc Vertical Engine
Genuine Briggs & Stratton OEM · Part number 44S977-0032-G1
The Professional Series 25 HP 724cc Vertical Engine is a genuine Briggs & Stratton engine parts part, OEM part number 44S977-0032-G1. Dykes Motors sells it for $890.79. It fits the Briggs & Stratton 44K777-0123-E1. It is in stock to order online, or you can pick it up at our store. Not sure it fits your machine? Send the model and serial number to the parts desk before you order.
Price and availability checked
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Free shipping. Curbside delivery with liftgate, 5 to 9 business days — by Sat, Oct 24. Or pick it up free at 3069 Hwy 49.
Genuine OEM part. Manufacturer warranty honored at our dealership.
Fits these models
Replaces Briggs & Stratton BS44S877-0002-G1
Replaces Briggs & Stratton BS44S977-0013-G1
Replaces Briggs & Stratton BS44S977-0015-G1
Replaces Briggs & Stratton 44L777-3137-G5
Details
Genuine Briggs & Stratton replacement engine, model 44S977-0032-G1, 25 Gross HP, 724cc. Crankshaft: 1" x 3-5/32", keyway 1/4", drilled & tapped 7/16-20. Max RPM: 3400. Electric Start. Manufacturer fitment reference (confirm your exact model before ordering): Professional Series Twin Cylinder Gas Engine, 1" x 3-5/32" Crankshaft • Dura-Bore® cast iron cylinder sleeve for extended life • Overhead valve design (OHV) for cooler operation and long valve life • Full pressure lubrication with oil filter • 16 amp charging system
Verify your fitment before you order
Text your equipment model and serial number to 601.516.7255 and we confirm the exact part before you pay. Prefer to talk? Call (601) 516-7255.
Not sure it fits your machine
Our parts desk can confirm the exact part for your equipment before you buy. Call (601) 516-7255 with your model and serial number and we will match the right part. Prefer to send the details in writing? Use our contact page.
Questions about part 44S977-0032-G1
What machines does part 44S977-0032-G1 fit?
Part 44S977-0032-G1 fits the Briggs & Stratton 44K777-0123-E1, per the fitment data on this page. If your machine is not listed, send the model and serial number to the parts desk before you order.
How much is part 44S977-0032-G1?
Dykes Motors sells the Professional Series 25 HP 724cc Vertical Engine, part number 44S977-0032-G1, for $890.79. Price and availability were checked Oct 15, 2026.
Is part 44S977-0032-G1 a genuine Briggs & Stratton part?
Yes. Part 44S977-0032-G1 is a genuine Briggs & Stratton OEM part.
Is part 44S977-0032-G1 in stock?
Yes. It is in stock to order online, or you can pick it up at our store.
Visit Us in Collins, MS
3069 Hwy 49, Collins, MS 39428 · (601) 516-7255 · Get directions