5 Diesel Engines You Can Actually Buy On Amazon

Everyone knows Amazon. The online retailer is one of the largest markets in the world, earning itself a reputation for selling just about anything you can imagine. In the automotive department, Amazon offers car parts, tools to fix vehicles, and everything in between, even entire diesel engines.

Diesel engines are a type of internal combustion engine that uses diesel as a fuel source to generate power. Although they're noisier than gas engines, diesel engines have many benefits. They have better fuel efficiency and more torque. Diesel engines also last longer than gas engines. Although you don't typically find them in cars, vehicles like trucks, buses, and boats all run on diesel. Outside of transportation, many lawnmowers, generators, and construction and farm equipment rely on these engines for power.

Whether you're replacing an old one in your lawnmower, looking to learn the ins and outs by taking one apart, or just need a new one, Amazon offers many different diesel engines. Brands like Briggs & Stratton, DuroMax, and Wen are all available, and yes, Amazon does offer its iconic Prime shipping on many of them, despite the general massive size of a diesel engine. Here are some of the diesel engines you can buy on Amazon today.

A quick search for diesel engines on Amazon will flood your results with lawnmower, generator, and agriculture-oriented engines. Anyone hoping to find full-size diesel engines to go in your next truck rebuild is out of luck. However, for the sake of diversity, we included products with various horsepower that can fit a wide array of jobs.

First up is this 247cc Diesel Engine. As the name suggests, this engine has 247cc of displacement, brought by a four-stroke motor with a speed of 3,600 RPM and 3.6 kilowatts of power. It features a direct-injection fuel system with good atomization and low fuel consumption, and the air cooling system helps ensure fast heat dissipation and long service life. This diesel engine also has a speed control system with options to install throttle cables if needed. It has a large capacity diesel tank, while retaining a smaller size and weight than many gas-powered engines, weighing under 60 pounds.

The 247cc Diesel Engine works with road cutting and grinding machines, as well as water pumps, air conditioning compressors, and other agricultural machinery like tillers. It costs $289.98 on Amazon, and is in stock at the time of this writing. The estimated delivery time is about two weeks.

Another perk of diesel engines is their versatility. Unless they are otherwise created for a specific vehicle, you can find plenty of diesel engines with various uses, and the Goudergo 4 Stroke 10HP Diesel Engine is just that. 

This four-stroke engine can generate power up to 6.3 kilowatts (kW) and speeds of up to 3,600 RPM. It powers on using a manual recoil start method, which is quick and easy to use, and just about everyone is familiar with a pull start, so even if you need someone else to start it, they'll be able to get it done easily. And once it's on, it'll stay on thanks to the engine's forced-air-cooling system, dense cooling holes, and 1.45-gallon fuel tank. The cooling system prevents the engine from stalling, the healthy air flow stops overheating, and the pressure-reducing valve further protects the inside of the engine, prolonging its service life.  

The Goudergo 4 Stroke 10HP Diesel Engine's primary use is for farmland operations, but that doesn't mean it's a one-trick pony. It can also be used for garden irrigation, powering small engineering machinery, drainage, and emergency repairs. It can also power small agricultural machinery, including micro tillers, generators, and small walk-behind tractors. It's available for $349.99 on Amazon.

Diesel engines are more efficient than gas, and Amazon offers one that boasts about its fuel efficiency: the JAYEUW 3HP Diesel Engine. This self-injection, four-stroke 196cc diesel engine tops out at speeds of up to 3,000 RPM with a maximum power of 2.2 kW. It's weaker than others on this list, but it's lighter and more compact, weighing nearly half as much as the other engines (47 pounds). Its lightweight frame makes it incredibly easy to move to wherever you need it.

However, the main draw, at least according to its Amazon listing, is its fuel efficiency. The JAYEUW thoroughly promotes the 3HP Diesel Engine's low oil consumption with a more punctual diesel injection that extends the product's service life. The company describes it as a "superior" diesel system, with intake and exhaust systems optimized to save energy, diesel, and, subsequently, money. It uses less than 280 grams of fuel per kilowatt-hour and holds 3 liters of fuel in the diesel tank, which features enhanced thickening with a special painting process and seam welding, so it won't leak and lose fuel.

The JAYEUW 3HP Diesel Engine has many uses, including road flat tampers and water pumping machines. It is available on Amazon for $219.99.

If you're working with a larger budget and need a versatile engine, this 9HP Diesel Engine could be a good option. It's a four-stroke, single-cylinder diesel engine with (surprise) 9 horsepower, and a displacement capacity of 406cc. It features a direct-injection combustion system, splash and pressure lubrication, and a forced air cooling system.

As with most diesel engines, the Amazon listing boasts that this engine can be used for various applications. It's primarily built for small agricultural use, like micro-tillers, walking lawnmowers, and irrigation and drainage systems. However, it can also work well in small transport vehicles, so this 9 horsepower diesel engine can power your go-kart or mini-bikes.

The 9hp Diesel Engine costs $389.00 on Amazon, and considering it ships from China, you will have to add on a considerable shipping fee. The store listing guarantees the product ships within two days of receiving orders, with an estimated delivery of one week. According to Amazon customer reviews, the sellers are quick to respond, and the shipping is as fast as it claims, despite international factors like customs. The diesel engine has mostly positive reviews, with verified customers on Amazon highlighting good performance from the motor.

Another product you can find on Amazon is this 420cc 15 HP Four-Stroke Diesel Engine. This single-cylinder can output power up to 9.7 kW at speeds of up to 3,600 RPM, and the listing highlights that the power will help you get jobs done easier and quicker. They also mention the engine's efficient cooling system that prevents overheating, so it'll last longer, and its low fuel consumption helps you work longer and save money on diesel with a 6.5-liter fuel tank. Other features include an engine silencer, which reduces noise to keep your work environment quiet, and an oil alarm, signaling whenever there isn't enough oil and even automatically shuts down to prevent long-term damage.

The Amazon listing says the 420cc 15HP 4-Stroke Diesel Engine has multiple uses, including high-pressure washers, trenchers, and compressors. It can also go inside a go-kart, adding another degree of variability to the diesel engines you can find on Amazon. This product is available on Amazon for $359.99.