The Kawasaki FH721D-S08 engine is a powerful 25-horsepower gasoline engine designed to operate efficiently in both commercial and residential settings. Featuring a 1-1/8” x 3.94” horizontal shaft and 4-bolt mounting pattern, this engine offers a reliable, high-performance solution for zero-turn riding mowers, riding lawn mowers, utility equipment, and a wide range of industrial machines. It is built to withstand demanding workloads while maintaining consistent, smooth performance.

This 675cc 4-stroke OHV V-Twin engine delivers high torque and consistent power delivery, making it perfect for applications that require reliable performance under tough conditions. The electric start system with a 12-volt Bendix-type starter ensures reliable ignition at the push of a button, eliminating the need to pull ropes or deal with difficult starts in cold weather. The included pulse fuel pump also contributes to fuel efficiency and consistency, even during extended use.

What sets the FH721D-S08 apart is its Donaldson dual-element air cleaning system, which provides superior protection against dust and debris. This heavy-duty air filtration system ensures the engine stays clean and operates efficiently in dusty or debris-prone environments, such as gardening, farming, or construction. Paired with a pressurized lubrication system and mechanical governor, key engine components remain protected and properly regulated during operation, extending engine life and improving reliability.

The forced-air cooling system is designed for continuous performance, preventing overheating during long work shifts. Plus, its compact footprint (21.5 x 18.5 x 17.75 in) and light weight (97 lbs.) make it easy to install with a variety of compatible equipment brands, including John Deere, Toro, Exmark, Encore, Ariens, Bad Boy, Scag, and many more.

The Kawasaki FH721D-S08 engine is compatible with engines like the Briggs & Stratton 386447, making it an ideal option for upgrading or replacing. Backed by Kawasaki's 3-year commercial and consumer warranty, it offers confidence and lasting value for both professionals and homeowners.

At Carroll Stream Motor Company, we've been providing high-quality engines since 2005, backed by a knowledgeable Michigan team and a large inventory of replacement parts. We offer free shipping, competitive prices, and expert assistance to ensure your engine fits your equipment perfectly the first time.

Order your Kawasaki FH721D-S08 today and enjoy exceptional performance, reliability, and support! Quantities are limited, so don't hesitate to contact our team at 1-888-208-2088 or 248-628-4638 if you have any questions. We're here to help you power through your next project with confidence.

Add Genuine OEM Kawasaki Fuel Treatment. This 12oz bottle is designed to help protect your engine!

NO EXTRA FEES! Free residential delivery included.

Purchase Opti Oil With Engine for 6 Year Warranty* NO SALES TO CALIFORNIA

Use to Replace Model Numbers:

Popular engine replacement for the John Deere 757 Zero Turn

FH721D-S01, FH721D-S04 FH721D-S05, FH721D-S06, FH721D-S07, FH721D-S11, FH721D-AS01, FH721D-AS01-S, FH721D-BS01, FH721D-BS01-S, FH721D-CS01, FH721D-CS01-S, FH721D-DS01, FH721D-DS01-S, FH721D-ES01, FH721D-ES01-S, FH721D-FS01, FH721D-FS01-S, FH721D-GS01, FH721D-GS01-S, FH721D-AS04 FH721D-AS05, FH721D-BS05, FH721D-AS06, FH721D-BS06, FH721D-S07-R, FH721D-AS07, FH721D-S11-R

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.

NO SALES TO CALIFORNIA