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

Item# 30471

Only $579.99
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Factory Shipped —
Estimated Delivery: 6 - 11 Business Days
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Ships Truck - (65.0 lbs)
Unloading Requirements
Not Available in Stores

Manufacturer's Warranty: 24 months parts / 24 months labor

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Product Summary

The Briggs & Stratton 2100 Series Horizontal OHV Engine provides easy starting with Magnetron® electric ignition and 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

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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
  • Flat panel pleated automotive-type air filter for superior engine protection
  • Magnetron® electronic ignition delivers quick, dependable starts with no maintenance required

Key Specs

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Item#30471
Ship Weight65.0 lbs
Engine Displacement (cc)420
Start TypeRewind
ApplicationMid-duty
Engine TypeHorizonal shaft
Torque (ft./lbs.)21
Shaft OutputHorizontal
Crankshaft1 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 ReductionNo
PTO Height (in.)5.25
Bearing TypeBall
Cylinders (qty.)1
Cylinder BoreAluminum cast iron sleeve
Bore x Stroke (in.)3.54 x 2.6
Cooling SystemAir cooled
Air Cleaner TypeHigh-mount cartridge with pre-cleaner
Fuel TankYes
Fuel TypeGasoline
Fuel Tank Capacity (qt.)4
Fuel PumpGravity fed
Fuel FilterIn-tank
Oil Capacity (qt.)0.875
Lubrication SystemSplash
Ignition SystemMagnetron electronic ignition
Governor SystemMechanical
CarburetorFloat-fed
Throttle ControlManual
Choke ControlManual
Max. RPM3,600
Muffler IncludedYes
Flywheel BrakeNo
Auto Compression ReleaseYes
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

Customer Reviews

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Product Question + Answer

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
24 months parts / 24 months labor

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Extended Warranty Repair Plan
Only $69.99
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Extended Warranty + Accidental Damage Repair Plan
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Briggs & Stratton 2100 Series Horizontal OHV Engine — 420cc, Model# 25T232-0037-F1 The price is $579.99.
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Hide Similarities
Engine Displacement (cc)
420 479 570 479 570
Start Type
Rewind Electric w/recoil backup Electric w/recoil backup Electric Electric w/recoil backup
Application Mid-duty Compressor, pressure washer, conveyor Compressor, pressure washer, conveyor Compressor, pressure washer, conveyor Compressor, pressure washer, conveyor
Engine Type Horizonal shaft Vanguard V-Twin OHV Vanguard V-Twin OHV Vanguard V-Twin OHV Vanguard V-Twin OHV
Rated Power (HP) - 16 - - -
Torque (ft./lbs.) 21 - - - -
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 2.83 x 2.76 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 Yes - -
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 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 13 3/8 x 16 1/8 x 17 1/4 12 5/16 x 16 1/8 x 19 12.5 x 16 x 23
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes No Yes