Harbor Freight Tools


22 HP (670cc) V-Twin Horizontal Shaft Gas Engine, EPA

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Replacement for 22 HP Gasoline Engines

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This Predator 670cc V-twin 4-stroke gasoline engine delivers more power in less space than similar displacement standard twins. The horizontal shaft makes this gas engine an ideal replacement for most standard engine configurations. The powerful v-twin gas engine features a durable cast iron cylinder making it the perfect replacement engine for: Mowers, water pumps, high pressure washers and dozens of other machines.

  • Compact v-twin design for more power in a smaller footprint
  • Durable cast iron cylinder withstands wear and abuse
  • Electric start
  • Fuel shut off for safe transport
  • For use on: Mowers, water pumps, high pressure washers
  • Our Predator 670cc 22 HP V-Twin Horizontal Engine is a great replacement for your Honda GX630, 688cc, Honda GX660, 688cc, Honda GX690, 688cc, Briggs & Stratton Vanguard 3854, 627cc, Briggs & Stratton Vanguard 3864, 627cc

Replacement Parts in Stock

Call to Order: 1-800-444-3353

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Important Information

  • In order to return this item for a refund or replacement, all fuel must first be drained. Battery sold separately. Oversized item: cannot be shipped to Alaska or Hawaii. Not available in California.
  • This item is subject to a $14.95 additional shipping charge.
  • This item is subject to a 20% restocking fee

Mowers, water pumps, high pressure washers
Engine displacement (cc)
Fuel type
87+ octane unleaded gasoline
Horsepower (hp)
Speed (max)
4000 RPM
Maximum Torque
45 NM @ 2500 RPM
Product Height
16.9 in.
Product Length
23.6 in.
Product Weight
110.20 lb.
Product Width
19.2 in.
Shipping Weight
126.60 lb.
Start type
Stroke length (in.)
70 mm
1/4 in.
Mounting pattern
7.7 in. x 4 in. - 3.4 in. (195.5mm x 101.5mm - 86mm)
Shaft length (in.)
2.84 in/72.2 mm
Shaft rotation direction
Counter clockwise
Sound rating (dB)
88 dB
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee the emissions control system on your engine will be free from defects in material and workmanship for two (2) years, provided there has been no improper maintenance, misuse, or abuse of your engine. We guarantee this product to be free from defects in materials and workmanship for 90 days from the date of purchase. Limitations apply.