Heavy D buys a busted one-of-a-kind rock crawler and gives it the Sparks Motors treatment for a quick flip. Meanwhile, a friend commissions a 1,000 gallon fuel truck and two custom diesel-powered fertilizer spreaders for his helicopter business.
Heavy D continues trying to salvage a wrecked overland camper from Europe, hoping for a big payday. Meanwhile, Sam designs a hub-centric, diesel-powered bicycle with spare and salvaged parts from the shop.
Professional off-road racer RJ Anderson enlists Heavy D to trick out his brand new Ford Raptor and add some serious towing capacity; the Diesel Brothers challenge the Goons Garage and Welder Up to a Tuff Truck rematch in Mesquite, Nev.
The Diesel Brothers continue transforming their junkyard Bronco into an off-road beast for the Tuff Truck rematch against the Goons and Welder Up. Meanwhile, Heavy D customizes a brand new UTV so his friend can break a world record at the live event.
A new client asks for the biggest build yet: a monster school bus capable of driving over sand and water. Later, the Muscle brings in his own client build for a gym buddy, a Raptor-style F250.
A new client asks for the biggest build yet- a monster school bus capable of driving over sand and water. Redbeard discovers the Mello Yello racecar from Days of Thunder and the perfect buyer for it.
A client asks Heavy D and his crew to turn a Ford F550 into a tough 6x6 farm truck that's also a rolling showcase for biodiesel fuel. Heavy D uses the power of physics to drive a truck on just two wheels.
A client asks Heavy D to turn a Ford F550 into a tough 6x6 farm truck that's also a showcase for biodiesel fuel, and the guys make their dreams come true when they build the first diesel Monster Jam truck.
Major league pitcher Jacob deGrom needs his OBS Ford revamped. The guys convert a British Land Rover defender from right hand drive to left hand drive.
The guys pull out all the stops on a build for their lawyer Cole-converting a rare Land Rover Defender from right hand drive to left hand drive. And Heavy D tries to get more money to the shop by parting out a military airplane de-icer.
The Diesel Brothers give a truck overhaul to a local dad who was harassed at a campsite when his F350 broke down. And the guys put together the shop's first-ever diesel Motorcycle, with a Magneto!
Heavy D, Diesel Dave and the Dieselsellerz crew scramble to finish an F100 race truck in time to race the legendary Mint 400, and Heavy D has the biggest giveaway yet - of the Mighty Megaram
The Dieselsellerz are pulling out all the stops to completely rebuild the Super Six for a client, and Diesel Dave leaves the nest- with a wife, a baby, and his very own client build- a 6.7 Powerstroke F450 Superduty built to tow anything.
The Dieselsellerz are pulling out all the stops to completely rebuild the Super Six for a client, and Heavy D faces a challenge when his neighbor asks him to turn a 5-ton military truck into a snow-demolishing plow.
The Dieselsellerz are pulling out all the stops to build a new giveaway - a Nissan Titan with near-zero emission Cummins engine. Heavy D fulfills his lifelong dream to drive a truck in Monster Jam.
A big new client asks Heavy D, Diesel Dave and the Dieselsellerz crew to turn a busted 1969 Chevy C10 into a diesel-drinking lowrider; the guys run into a perfect fix and flip Prolite race truck, which Heavy tests at a local dirt track.
For the Dieselsellerz giveaway, Thunder vs. Lightning, two lifted F450s compete and the winner decides which one to take home; the guys continue turning a busted '69 Chevy C10 into a diesel low rider for a millionaire client.
The guys face a huge challenge when a big dollar collector asked them to slam a 1969 C10. Meanwhile, Heavy D and the guys are off to bike week at Sturgis to check out a one-of-a-kind hydrostatic diesel motorcycle.
When the local Sheriff asks for a new Search and Rescue vehicle, the guys are excited to build an amphibious Sisu Nasu. And the diesel guys pull out all the stops for their next work truck giveaway- a Dodge 5500 with all the bells and whistles.