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13 HP (420cc) OHV Horizontal Shaft Gas Engine, EPA/CARB

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Replacement for 13 HP Gasoline Engines

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Available Online by Oct. 10

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Product Overview

This Predator 420cc gasoline engine has gas-saving overhead valves for cooler, cleaner performance and longer life. The horizontal shaft is ball-bearing mounted, making this gas engine an ideal replacement for most standard engine configurations. The powerful gas engine features a durable cast iron cylinder making it the perfect replacement engine for a lawn mower, log-splitter and dozens of other machines.

  • Upgraded engineering and construction for improved lifespan
  • Durable cast iron cylinder withstands wear and abuse
  • User-friendly controls for easy starting and operation
  • Low oil sensor shuts down engine when oil reaches a level that is too low for safe operation
  • Fuel shut off for safe transport
  • For use on: pressure washers, compressors, log splitters, vacuums, tillers, water pumps, chipper/shredders, blowers
  • Our Predator 420cc 13 HP Vertical Engine is a great replacement for your Honda GX340, 389cc, Honda GX390, 389cc, Briggs & Stratton XR1650, 420cc, Briggs & Stratton XR2100, 420cc, Kohler CH440, 429cc, ECH440, 429cc, ECH440LE, 429cc, MZ360, 357cc, MX360, 358cc, MX400, 402cc

Replacement Parts in Stock

Call to Order: 1-800-444-3353

View Available Parts

Important Information

  • Oversized Item: cannot be shipped to Alaska or Hawaii. In order to return this item for a refund or replacement, all fuel must first be drained.
  • This item is subject to a 20% restocking fee


pressure washers, compressors, log splitters, vacuums, tillers, water pumps, chipper/shredders, blowers
Engine displacement (cc)
Horsepower (hp)
Speed (max)
3600 RPM
Maximum Torque
18.4 ft. lbs. @ 2500 RPM
Mounting type
Product Height
17.1 in.
Product Length
18.9 in.
Product Weight
73.00 lb.
Product Width
13.8 in.
Shipping Weight
88.65 lb.
Start type
Electric start with recoil backup
Stroke length (in.)
66 mm
0.25 in. / 6.3mm
Mounting pattern
195.5mm L x 86.0mm W - 103.0mm W (7.7 in. L x 3.4 in. W - 4.1 in. W )
Shaft length (in.)
3.48 in. (88.5mm)
Shaft rotation direction
Counter clockwise
Sound rating (dB)
108 dB
Shaft Diameter
1 in. (25.4mm)
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.