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Briggs & Stratton 2100 Series Horizontal OHV Engine — 420cc, Model# 25T232-0037-F1

Item# 30471
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Briggs & Stratton 2100 Series Horizontal OHV Engine — 420cc, Model# 25T232-0037-F1

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Was $659.99
Sale $619.99

Save $40.00

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  • Overhead valve design runs cooler and cleaner, delivering more power, longer engine life and improved fuel economy
  •  Aluminized Super Lo-Tone muffler resists corrosion for longer life and provides exceptionally quiet operation
  • Dual ball bearings reduce wear for longer life
  • Dura-Bore™ cast iron cylinder sleeve withstands wear and abuse while providing improved oil control
  • DuraLube™ gear-driven splash lubrication system continuously supplies oil to all internal parts
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Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
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Product Summary

The Briggs & Stratton 2100 Series Horizontal OHV Engine provides easy starting with OHV for greater durability and reduced emissions. Includes a Maxi-Clean™ air filter and a Super Lo-Tone™ muffler. Great for high-performance mowing.

What's Included
  •  (1) Engine, Model# 25T232-0037-F1

Features + Benefits

  • Overhead valve design runs cooler and cleaner, delivering more power, longer engine life and improved fuel economy
  •  Aluminized Super Lo-Tone muffler resists corrosion for longer life and provides exceptionally quiet operation
  • Dual ball bearings reduce wear for longer life
  • Dura-Bore™ cast iron cylinder sleeve withstands wear and abuse while providing improved oil control
  • DuraLube™ gear-driven splash lubrication system continuously supplies oil to all internal parts
  • Flat panel pleated automotive-type air filter for superior engine protection
  • Rewind starter delivers quick, dependable starts with no maintenance required
Key Specs
Item# 30471
Brand Briggs & Stratton
Manufacturer's Warranty 24 months parts / 24 months labor
Ship Weight 65.0 lbs
Engine Displacement (cc) 420
Start Type Rewind
Engine Type OHV
Torque (ft./lbs.) 21
Shaft Output Horizontal
Crankshaft 1 x 3 21/32
Shaft Diameter (in.) 1
Shaft Length (in.) 3 21/32
Shaft Keyway (in.) 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20
Gear Reduction No
PTO Height (in.) 5.25
Bearing Type Ball
Cylinders (qty.) 1
Cylinder Bore Aluminum cast iron sleeve
Bore x Stroke (in.) 3.54 x 2.6
Cooling System Air cooled
Air Cleaner Type High-mount cartridge with pre-cleaner
Fuel Tank Yes
Fuel Type Gasoline
Fuel Tank Capacity (qt.) 4
Fuel Pump Gravity fed
Fuel Filter In-tank
Oil Capacity (qt.) 0.875
Lubrication System Splash
Ignition System Magnetron electronic ignition
Governor System Mechanical
Carburetor Float-fed
Throttle Control Manual
Choke Control Manual
Max. RPM 3,600
Muffler Included Yes
Flywheel Brake No
Auto Compression Release Yes
Bolt Circle (in.) 3 5/8, 5, 6 1/2
Mounting Base L x W (in.) 7 11/16, 3 15/16
Mounting Bolt Pattern L x W (in.) 7 11/16, 3 15/16
Dimensions L x W x H (in.) 16 x 17.7 x 18
EPA/CARB Approval (California Air Resource Board) Yes

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Product Question + Answer
Replacement Parts
Call To Order: 1-800-657-0516

Mon - Fri 7:00 AM - 6:00 PM (Central)
Sat 7:00 AM - 3:00 PM (Central)

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Briggs & Stratton 2100 Series Horizontal OHV Engine — 420cc, Model# 25T232-0037-F1 The price is $619.99.
Briggs & Stratton 2100 Series Horizontal OHV Engine — 420cc, Model# 25T232-0037-F1
5 / 5 (2)
Item# 30471
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Was $659.99
Sale $619.99
Save $40.00
5 / 5 (4)
Item# 6007
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Was $1099.99
Sale $1079.99
Save $20.00
4.7 / 5 (3)
Item# 60072002
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Was $1099.99
Sale $1079.99
Save $20.00
4 / 5 (1)
Item# 60072
Backordered Online — ships in 8 - 15 Business Days
Was $1279.99
Sale $1229.99
Save $50.00
5 / 5 (1)
Item# 60188
Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
Only $1379.99
Hide Similarities
Engine Displacement (cc)
420 479 479 479 570
Start Type
Rewind Electric w/recoil backup Electric Electric w/recoil backup Electric w/recoil backup
Application - Compressor, pressure washer, conveyor Compressor, pressure washer, conveyor Compressor, pressure washer, conveyor Compressor, pressure washer, conveyor
Engine Type OHV Vanguard V-Twin OHV Vanguard V-Twin OHV Vanguard V-Twin OHV Vanguard V-Twin OHV
Torque (ft./lbs.) 21 - 24.00 - -
Shaft Output
Horizontal Horizontal Horizontal Horizontal Horizontal
Crankshaft 1 x 3 21/32 - - - -
Shaft Diameter (in.) 1 1 1 1 1
Shaft Length (in.) 3 21/32 2 29/32 2 29/32 2 29/32 2 29/32
Shaft Keyway (in.)
1/4 1/4 1/4 1/4 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20 3/8–24 3/8–24 3/8–24 3/8–24
Shaft Rotation (From PTO Shaft Side) - Counterclockwise Counterclockwise Counterclockwise Counterclockwise
Gear Reduction No - - - -
PTO Height (in.)
5.25 5 1/4 5 1/4 5 1/4 5 1/4
Bearing Type
Ball Ball Ball Ball Ball
Cylinders (qty.)
1 2 2 2 2
Cylinder Bore
Aluminum cast iron sleeve Cast iron Cast iron Cast iron Cast iron
Bore x Stroke (in.)
3.54 x 2.6 2.68 x 2.60 2.68 x 2.60 2.68 x 2.60 2.83 x 2.75
Cooling System
Air cooled Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type
High-mount cartridge with pre-cleaner Dual element Dual element Dual element Dual element
Fuel Tank Yes Not included Not included Yes Yes
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Tank Capacity (qt.)
4 - - 9 9
Fuel Pump
Gravity fed Yes, (Pulse) Yes, (Pulse) No No
Fuel Filter In-tank - - - -
Oil Capacity (qt.)
0.875 1.5 (48 oz.) 1.5 (48 oz.) 1.5 (48 oz) 1.5 (48 oz.)
Lubrication System
Splash Full pressure Full Pressure Full pressure Full pressure
Low Oil Alert - No - - -
Ignition System
Magnetron electronic ignition Electronic Electronic Electronic Electronic
Governor System
Mechanical Mechanical Mechanical Mechanical Mechanical
Carburetor
Float-fed Float Float Float Float
Throttle Control
Manual Adjustable for a constant speed operation, manual friction, remote Adjustable for a constant speed operation, manual friction, remote Adjustable for a constant speed operation, manual friction, remote Adjustable for a constant speed operation, manual friction, remote
Choke Control
Manual Manual, remote Manual, remote Manual, remote Manual, remote
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps - 16 16 16 16
Muffler Included
Yes No No Yes Yes
Flywheel Brake No - - - -
Auto Compression Release Yes No - - -
Bolt Circle (in.)
3 5/8, 5, 6 1/2 5, 6 1/2, 7 3/4 5, 6 1/2, 7 3/4 5, 6 1/2, 7 3/4 5, 6 1/2, 7 3/4
Mounting Base L x W (in.) 7 11/16, 3 15/16 - - - -
Mounting Bolt Pattern L x W (in.) 7 11/16, 3 15/16 7 11/16 x 4 1/16 7 11/16 x 4 1/16 7 11/16 x 4 1/16 7 11/16 x 4
Dimensions L x W x H (in.)
16 x 17.7 x 18 12 5/16 x 16 1/8 x 17 1/4 12 5/16 x 16 1/8 x 19 12 5/16 x 16 1/8 x 19 12.5 x 16 x 23
EPA/CARB Approval (California Air Resource Board)
Yes Yes - No Yes