Best Vertical Shaft Riding Mower Engine in 2025
Updated on July 2025
#1
Recommended
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- 24hp Kawasaki 726cc OHV V-Twin Engine
- 1" x 3-5/32" crankshaft with tapped 7/16" and 1/4" keyway
- Compatible replacement engine for riding mowers and zero-turn lawn mowers
- Measure the crankshaft of your old engine to ensure fitment, as sizes vary
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- 24hp Kawasaki 726cc OHV V-Twin Engine
- 1" x 3-5/32" crankshaft with tapped 7/16" and 1/4" keyway
- Compatible replacement engine for riding mowers and zero-turn lawn mowers
- Measure the crankshaft of your old engine to ensure fitment, as sizes vary
#2
Value for Money
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- electric start with a 16-amp alternator for reliable power
- Overhead Valve (OHV) technology for efficient performance
- Dura-Bore cast iron cylinder sleeve enhances durability
- Float feed carburetor ensures dependable starting and operation
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- electric start with a 16-amp alternator for reliable power
- Overhead Valve (OHV) technology for efficient performance
- Dura-Bore cast iron cylinder sleeve enhances durability
- Float feed carburetor ensures dependable starting and operation
#3
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- Durable cast iron cylinder sleeve and dual element air filter enhance engine longevity
- Patented linear balancing system ensures smoother operation
- Powered by a 9 amp electric start; includes muffler
- 1" x 3-5/32" shaft with tapped 7/16" and 1/4" keyway
- Designed as a replacement engine for common riding mowers
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- Durable cast iron cylinder sleeve and dual element air filter enhance engine longevity
- Patented linear balancing system ensures smoother operation
- Powered by a 9 amp electric start; includes muffler
- 1" x 3-5/32" shaft with tapped 7/16" and 1/4" keyway
- Designed as a replacement engine for common riding mowers
#4
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- Cast iron cylinder sleeve prolongs engine durability
- Linear balancing system enhances operational smoothness
- 9 amp electric start for convenience
- 1" x 3-5/32" shaft with 7/16" taps and a 1/4" keyway
- Designed as a replacement engine for common riding mowers
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- Cast iron cylinder sleeve prolongs engine durability
- Linear balancing system enhances operational smoothness
- 9 amp electric start for convenience
- 1" x 3-5/32" shaft with 7/16" taps and a 1/4" keyway
- Designed as a replacement engine for common riding mowers
#5
10% Off
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- 19 HP power output
- 540 cc engine displacement
- Single cylinder design
- Briggs & Stratton Intek Series
- Engine suitable for outdoor equipment
- Durable and reliable performance
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- 19 HP power output
- 540 cc engine displacement
- Single cylinder design
- Briggs & Stratton Intek Series
- Engine suitable for outdoor equipment
- Durable and reliable performance
#6
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- Cast iron cylinder sleeve enhances durability and engine lifespan
- Float carburetor ensures reliable and effortless starting
- Patented linear balancing system improves operational smoothness
- 9 amp electric start functionality
- Compliant with CARB regulations
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- Cast iron cylinder sleeve enhances durability and engine lifespan
- Float carburetor ensures reliable and effortless starting
- Patented linear balancing system improves operational smoothness
- 9 amp electric start functionality
- Compliant with CARB regulations
#7
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- Dura-Bore cast iron cylinder sleeve enhances durability
- Float carburetor enables reliable and easy starting
- Dual-Clean air cleaner with pleated paper filter and foam pre-cleaner provides optimal engine protection
- Overhead valve design (OHV) promotes cooler operation and extends valve lifespan
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- Dura-Bore cast iron cylinder sleeve enhances durability
- Float carburetor enables reliable and easy starting
- Dual-Clean air cleaner with pleated paper filter and foam pre-cleaner provides optimal engine protection
- Overhead valve design (OHV) promotes cooler operation and extends valve lifespan
#8
11% Off
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- Electric start with recoil backup
- 3-quart fuel tank capacity
- 1 x 3-5/32 inch shaft, 7/16 inch tapped with a 1/4 inch keyway
- Includes 48 oz oil bottle
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- Electric start with recoil backup
- 3-quart fuel tank capacity
- 1 x 3-5/32 inch shaft, 7/16 inch tapped with a 1/4 inch keyway
- Includes 48 oz oil bottle
#9
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- 27 HP 810cc Professional Series Engine
- 1-1/8" x 4-5/16" shaft, tapped 7/16" with 1/4" keyway
- Common replacement engine for consumer riding mowers and z-turns
- Please measure your old engine crankshaft, as Briggs makes 1 x 3-5/32, 1-1/8 x 3-5/32, 1-1/8 x 3.94, 1-1/8 x 4-5/16
- Mounting holes are drilled only. Recommended to use nut and bolt or the self-tapping bolts from your existing equipment
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- 27 HP 810cc Professional Series Engine
- 1-1/8" x 4-5/16" shaft, tapped 7/16" with 1/4" keyway
- Common replacement engine for consumer riding mowers and z-turns
- Please measure your old engine crankshaft, as Briggs makes 1 x 3-5/32, 1-1/8 x 3-5/32, 1-1/8 x 3.94, 1-1/8 x 4-5/16
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#10
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- 50-state compliant engine
- Durable Dura-Bore® cast iron cylinder sleeve for longevity
- Strong performance for medium-duty applications
- Includes a two-year consumer warranty for buyer protection
- Features ball bearings on both PTO and magneto sides
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- 50-state compliant engine
- Durable Dura-Bore® cast iron cylinder sleeve for longevity
- Strong performance for medium-duty applications
- Includes a two-year consumer warranty for buyer protection
- Features ball bearings on both PTO and magneto sides
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