Briggs & Stratton 550 Horizontal OHV Engine

Part# 1863

Very efficient, 127cc, 3/4 dia x 2 27/64in. L Shaft, 5.5 ft/lbs, 3600 RPM
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Briggs & Stratton horizontal 550 Series engine is 127cc and puts out 5.50 gross torque. This OHV engine has a 3/4" x 2-27/64" crankshaft. It has a recoil start and is equipped with a muffler. Briggs & Stratton 550 Series general purpose engines are designed to efficiently deliver the power. 50-State CARB Compliant. An excellent, compact performer that you can depend on for mid-duty applications like Shell-Eco Marathon, Supermielage and other competition vehicles.

1863 Motr views


  • OHV design for cooler operation, longer valve life
  • Dura-Bore™ cast iron cylinder sleeve for extended life
  • Float carburetor for consistent, easy starting
  • Maintenance-free Magnetron® electronic ignition for quick, dependable starts
  • Maxi-Clean™ automotive-style paper air filter for superior protection and long engine life
  • Dual oil filter and drain
  • Dual ball bearings reduce wear for long life
  • DuraLube™ gear-driven splash lubrication continuously supplies oil to all internal parts
  • Super Lo-Tone Muffler reduces noise levels improves tonal quality
  • 50-state compliant engine


Displacement 127cc
Starter Type Recoil
Crankshaft Orientation Horizontal
Crankshaft Type Straight
Fuel System Gasoline
Gear Reduction No
Crankshaft Dimensions 3/4" x 2-27/64"
Crankshaft Diameter 3/4"
Crankshaft Length 2-27/64"
Crankshaft End Tapped Size 5/16 - 24
Crankshaft Rotation Direction (From PTO Side) Counterclockwise
Bearing Type Ball
Cylinders 1
Cylinder Bore Type Cast Iron Sleeve
Air Cleaner Type Dual Element
Fuel Tank Yes
Oil Cooler No
Oil Capacity 20
Ignition System Electronic
Carburetor Type Float
Choke Control Manual
Max RPM 3600
Charging System None
PTO Height 4 - 11/64