BILT HARD 420cc 15HP Gas Engine with Electric Start, Horizontal Shaft 4 Stroke OHV Gas Motor, Gas Powered Multi-Use Engine
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Availability:
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Arrives
Jun 20 – Jun 24
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Size: 420cc Electric Start
Style: 4-Stroke Engine
Features
- POWERFUL ENGINE - Our 420cc displacement 4-stroke horizontal cylinder gas engine has a max torque of 18.45ft.lbs @2500RPM, max 3800 RPM speed, 15 maximum horsepower, 1.2 gal fuel tank. Built to meet & exceed industrial grade quality standards & provide dependable performance. The engine is shipped dry so make sure you add gasoline and engine oil correctly before starting (not included).
- SHAFT SPECS - 1 in Diameter, 3.48 in Length, end tapped with 3/8 in.-24 UNF; Keyway 1/4 in; Mounting pattern 7.72" L x 3.39" W-4.06" W. Durable design runs quiy and provides smooth operation.This engine spark plug system can take Torch: F6TC spark plugs, with a clearance of: 0.027-0.0.31 in. The engine runs on a minimum 87+ unleaded gasoline (ETHANOL<10% recommended).
- SAFETY & WIDELY APPLICATIONS - Built-in Force Air-Cooled and Splash Lubrication System, keeping the motor cool during extended use of time and ensure the operator's safety. A low oil shutoff functionality turns the engine off to prevent serious damage or failure. It's the perfect replacement engine for cement mixers, compressors, mowers, log splitters, vacuums, tillers, water pumps, chipper/shredders and blowers.
- GREAT REPLACEMENT - Our 420cc 15HP Horizontal Engine is a great replacement for your Honda GX340, 389cc, GX390, 389cc, Briggs & Stratton GX340, 389cc, GX390, 389cc, Kohler CH440, 429cc, ECH440, 429cc, ECH440LE, 429cc, Yamaha MZ360, 357cc, MX360, 358cc, MX400, 402cc etc.
- KINDLY NOTED- with EPA compliant, each gas engine will be Oil Tested before packaging, so it may touch a little oily, but 100% new condition.
Brand: BILT HARD
Model Name: GASOLINE ENGINE
Speed: 3800 RPM
Product Dimensions: 14.4"W x 17.5"H
Material: Cast Iron
Brand: BILT HARD
Model Name: GASOLINE ENGINE
Speed: 3800 RPM
Product Dimensions: 14.4"W x 17.5"H
Material: Cast Iron
Manufacturer: BILT HARD
Item Weight: 82.9 pounds
Item model number: R420
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jun 20 – Jun 24
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Size: 212cc
Style: 4-Stroke Engine
I ordered this for my Coleman CT200U-EX because HF was out of Predator Engines within 100 miles of me and this had a two day delivery and i kind of like the color. Plus it got good reviews. But after shipping was delayed twice on this engine, I was able to locate a Predator 224 at my local HF. I installed it and was very pleased with it's performance, but I had already painted my bike blue in anticipation of the Built Hard Engine and the Predator didn't look the great. Then this guy finally showed up and I swapped it in. Started first pull, is a little quieter than the Predator, and seems to perform just as well as the 224. Plus it looks great. Very happy with this purchase so far and would not hesitate to buy another if needed for another project.
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Reviewed in the United States on February 4, 2025 by Shawn B. Shawn B.
I replace a briggs and stratton motor on a 20" push mower, using the one tapped hole and enclosed bolt, then tapped two other holes 3/8" x 16 to reuse original mounting bolts. i removed keyway that was on the shaft and old blade adapter and bolt worked perfectly. The original brake cable fit and worked perfectly. I bought an $8 throttle cable and installed it to complete the switch over. The engine holds 1/2 qt of engine oil. When checking oil using dipstick, be sure to read instructions. You check engine oil with the dipstick without screwing it into the engine. I filled with gas, pushed primer button twice, and engine started effortlessly with first pull and runs smooth and quiet. It has much more power than the briggs motor I removed. After running engine for 5 minutes or so, I changed the oil. Note you must flip mower upside down to drain oil, there is no drain plug. So far I am very impressed with this little motor.
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Reviewed in the United States on August 4, 2024 by Sandy
Size: 212cc
Style: 4-Stroke Engine
An amazing engine! I have purchased several of these for go karts and they have worked wonderfully. Easy to install and they run so well. I am certain I will buy more.
Reviewed in the United States on February 4, 2025 by Paul R. Rosell
Size: 420cc Electric Start
Style: 4-Stroke Engine
Pros: Good Price; Runs well Cons: Battery not included; Oil not included; bolts&nuts to secure engine on the chassis not included; bolt set to secure pulley on the shaft not included. THE WORSE AND MOST RIDICULOUS: cable to connect battery and engine not included The customer needs to figure out how to install.When one add the cost of all extras and labor required, it gets close to the price of well known and reputable brands.
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Reviewed in the United States on February 22, 2025 by U. Fernandes
Size: 420cc Electric Start
Style: 4-Stroke Engine
I pulled an old Sears Suburban SS16 could been a 18HP originally, with an Onan twin out of the weeds, been sitting around for 15 or 20 years. I needed to do some dirt work on the drive. Wasn't worth spending a $1000 on to get a twin engine, I wanted an electric start too. Looked at reviews, and didn't want o spend extra $100 to get one from the china tool store locally. So chose the 420cc Bilt Hard, drilled the holes bolted it out and started on the third pull. I still hadn't hooked the electric start up yet. Starts easily. I've got about three hours onit so far, maybe a bit more, on the third tank of gas. Wouldn't know this classic from 1976 didn't have the 18HP engine on it, I've run at only about half throttle and it has more power than traction, and its dozer blade just pushes, hit a solid rock etc and the engine doesn't bog down, it just goes to spinning the tires and diggs. Time will tell how it holds up, so far, no complaints mechanically. The one gripe is there is nothing in the paperwork about wiring up a battery I seen, no specs on what the charging circuit or if it even has one, That is the reason for the four stars on install..... I would recommend the 420cc Bilt Hard to anyone looking to repower a classic garden tractor. It revived an old workhorse... Will it power a mowing deck? I can't say as I never intend to put a deck on this one, its just for gardening and dirt work....
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Reviewed in the United States on August 5, 2023 by Terry M. Terry M.
I bought a lawn mower and had to replace the engine. When I went back on the website it says this was the replacement part but when I received it it did not fit my lawn mower it will not mount to the lawn or correctly and I was not able to get a refund. Seriously disappointed in this it was a waste of my damn money
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Reviewed in the United States on March 7, 2025 by ms. marie
I am not a mechanic, but a hospital pharmacist, however I like machines and I like to buy something and have it last, and last, and last. My old Wrangler Rubicon has 200 M on it and runs like a kitten purr still...it may be my last car. My old Badger rototiller engine gave out after years of use. Should I let go of $600 for a new one or try a new engine?....that is always a gamble. I bought this Bilt Hard....it fit the rototiller after a few new frame attachment holes and a 5/8 inch pulley since my old one was 3/4. I had to fool around with this since I put too much oil in and also fouled my carburetor by turning the engine upside down. But I figured that out and blew out the carb and it runs great and has the power to till my garden. It took a little work, if yours is a straight replacement it will be easy. It runs perfectly for me.
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Reviewed in the United States on July 12, 2024 by John R.