Big Bro Bus

A new client asks for the biggest build yet -- a monster school bus capable of driving over sand and water. And The Muscle brings in his own client build for a gym buddy- a Raptor-style F250.

School Is In Session

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.

Now Departing: Diesel Air

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.

Raising Heli

Heavy D attempts to salvage a wrecked overland camper from Europe he bought at auction. Meanwhile, the team races to complete a 1,000 gallon fuel truck and two custom diesel-powered fertilizer spreaders for a helicopter operation.

Diesel Defender

Major league pitcher Jacob deGrom asks them to revamp his OBS Ford, and the diesel guys convert a rare British Land Rover Defender from right-hand drive to left-hand drive for a client.

De-Ice Ice Baby

The guys pull out all the stops on a build for their lawyer Cole and convert a rare Land Rover Defender from right-hand drive to left-hand drive. Heavy D tries to get more money to the shop by parting out a military airplane de-icer.

Yes Way, Jose

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!

Tuff Truck Takedown

When the guys are challenged to a Tuff Truck race by their former mechanics, Chet and Tyson of Goon Garage, Sparks Motors rebuilds a wasp-infested old Jeep and the Goons rebuild a water-logged Blazer.

Diesel Brothers Vs. The World

Heavy D's plan falls apart when he plans to turn a Cummins-swapped K5 Blazer into a one-of-a-kind, off-road showpiece with a matching trailer for a big client. Sam builds maybe the most dangerous mini bike the world has ever seen.

Episode 16

Episode 17

Episode 18