11.5 HP 344cc Vertical Shaft Engine
Genuine Briggs & Stratton OEM · Part number 21R807-0072-G1
The 11.5 HP 344cc Vertical Shaft Engine is a genuine Briggs & Stratton engine parts part, OEM part number 21R807-0072-G1. Dykes Motors sells it for $659.25. 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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In stock. Ships in 2 to 3 business days, arrives in 1 to 2 more — by Mon, Oct 26. Free shipping on every parts order. Free pickup at 3069 Hwy 49.
Genuine OEM part. Manufacturer warranty honored at our dealership.
Replaces Briggs & Stratton BS21R707-0011-G1
Replaces Briggs & Stratton BS21R707-0047-G1 (probable)
Details
Genuine Briggs & Stratton replacement engine, model 21R807-0072-G1, 11.5 Gross HP, 344cc, vertical shaft. Crankshaft: 1" x 3-5/32", keyway 1/4", drilled & tapped 7/16-20. Max RPM: 3300. Manufacturer fitment reference (confirm your exact model before ordering): Intek Series, Single Cylinder, Air Cooled, 4-Cycle Gas Engine, 1" x 3-5/32" Crankshaft • Intek Series™ Riding Mower Engine; More durable. More efficient. More powerful. Mows the lawn and lasts long • Tool-less Air Cleaner Cover; Easy access for filter changes • Overhead Valve (OHV) Engine Design; OHV engines run cooler and cleaner for better fuel economy and longer engine life • Dura-Bore cast iron cylinder sleeve for extended life • Maintenance-free Magnetron® electronic ignition for quick, dependable starts • Mechanical Governor • Buyer protection package provides a two year limited consumer engine warranty
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 21R807-0072-G1
What machines does part 21R807-0072-G1 fit?
We do not list a confirmed fitment for part 21R807-0072-G1 on this page. Send the model and serial number of your machine to the parts desk and we will check it before you order.
How much is part 21R807-0072-G1?
Dykes Motors sells the 11.5 HP 344cc Vertical Shaft Engine, part number 21R807-0072-G1, for $659.25. Price and availability were checked Oct 19, 2026.
Is part 21R807-0072-G1 a genuine Briggs & Stratton part?
Yes. Part 21R807-0072-G1 is a genuine Briggs & Stratton OEM part.
Is part 21R807-0072-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