In the diesel world, no one has more fun or builds bigger, badder trucks than Dieselsellerz. They turn a rusty 1948 Willy’s Jeep into a diesel-drinking monster for a new client & find the next giveaway truck at a gas station: a pristine LBZ Duramax.

Heavy D, Diesel Dave and the Dieselsellerz crew scramble to salvage their Duramax giveaway after it goes up in flames. Heavy D ignores Redbeard’s strict budget restrictions to turn their company tow truck into a tricked out, lifted monster.

When The Muscle buys a battered El Camino to fix and flip, it might be too big a job for even the Dieselsellerz team to transform it. Heavy D and Diesel Dave find their next giveaway truck- a Ford F650 that’s a perfect platform for pure power.

Heavy D comes up with a plan to rid the world of minivans by making and selling a mini version of Dieselsellerz’ legendary MegaRam. The F650 giveaway reveal will stretch the power of diesel to the limit when the F650 tries to pull an entire train.

A client asks Heavy D & his crew to turn his beat-up work truck into an off-road mobile service station. Heavy D searches for the next giveaway truck, & Diesel Dave finds the Holy Grail: a 2nd generation, quad cab Dodge with a 12-valve diesel engine.

The Dieselsellerz are cranking out their next giveaway: a quad cab Dodge with a 12-valve. When Black Rhino tools asks the guys for a show-stopping build for a trade show, they pull out all the stops- including importing a surprise from Sweden.

The Dieselsellerz are pulling out all the stops to build a cool hybrid for their good friend and stunt driver Tanner Godfrey. Meanwhile, time is running out for Heavy D to find a show stopping build for the upcoming SEMA trade show in Vegas.

Last year the Dieselsellerz put their insane builds on the map when they debuted their legendary MegaRam at the SEMA trade show in Vegas. With less than two weeks to go, it’s all hands on deck to finish a 6-wheel drive F550 in time for the big show.

When the frame on Heavy D's "quick flip" is unsalvageable, he decides to turn it into the ultimate mud truck. Chavis gets more than he bargained for when he's invited to bring his custom race truck to the Call Out Challenge truck competition.

Heavy D, Diesel Dave and the Dieselsellerz crew work to finish their epic monster mud truck for the giveaway, and The Muscle scrambles to find a buyer for the flashy Denali he bought without Heavy D's permission.

Sick of the ridicule on social media, Heavy D decides to finally finish the "Fail of the Year" UTV. And the gridiron comes to the garage when NFL legend Marshawn Lynch asks the guys to build him a Beastmode UTV.

When Redbeard challenges Heavy D to repurpose some old inventory, Heavy decides to marry a stretched 6 door F650 with a camper to create the ultimate expedition vehicle. And the guys buy a Hummer H1 from a mysterious mountain man.

Heavy D, Diesel Dave and the Dieselsellerz crew scramble to finish a six-door stretched F650 Expedition Camper for a big client. And Heavy D shocks the team with his latest flip- a diesel-powered experimental helicopter.

The Diesel Sellerz pick up a vintage fire truck to transform into a tow truck that can carry everyone in the shop. But before they get into the build, legend Chuck Norris comes to tap them for a truck for his latest project.

The Dieselsellerz pick up a vintage fire truck to transform into a tow truck that can carry everyone in the shop. And Heavy D is determined to finish the endless Fail of the Year UTV build.

Heavy D decides to test the physics abilities of the shop and build a somersaulting truck to use for viral videos. And The Muscle takes over a flip from Heavy D and turns a Dodge Ram into a badass modern pop-up camper.

The Diesel Brothers are up against the clock for their SEMA build: a replica Ford Bronco made from an F350 and an Excursion; Heavy D brings in physics help to make his dream of a somersaulting truck come true.

The Dieselsellerz SEMA build hits a snag, and the guys scramble to find a replacement. They decide to rebuild and give away their most iconic build: The Megaram.

The Dieselsellerz are pulling out all the stops to completely rebuild the Super Six for a client; 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 a near-zero emission Cummins engine; Heavy D fulfills his lifelong dream to drive a truck in Monster Jam.

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 asks them to slam a 1969 Chevy C10; Heavy D and the guys are off to bike week at Sturgis to check out a one-of-a-kind hydrostatic diesel motorcycle.

The guys build an amphibious Sisu Nasu for the local sheriff; the next work truck giveaway: a Dodge 5500 with all the bells and whistles.

Heavy D adds a second truck to their latest giveaway and comes up with a stunt to promote it: a race across a lake on snowmobiles. Then, the guys head to Houston with giant diesel trucks and supplies to help Hurricane Harvey victims.

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 a monster school bus capable of driving over sand and water; Redbeard discovers the Mello Yello racecar from the "Days of Thunder" movie and finds 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; 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!

After Chet and Tyson of Goon Garage challenge the guys to a Tuff Truck race, Sparks Motors rebuilds a wasp-infested old Jeep, and the Goons rebuild a water-logged Blazer.

Heavy D and the crew transform a rundown Canadian logging truck into a maxed out, custom semi to transport their builds cross country. And Diesel Dave and the Muscle go head to head building two ultimate Diesel Daily Drivers for their next truck giveaway.

While the shop finishes the semi build, Heavy D moves full steam ahead with his plan to attempt a death-defying stunt in the Brodozer. To complement the jump, Heavy D plans a live giveaway inspired by one of their most popular builds, the US Duramax.

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

Heavy D continues trying to salvage a wrecked overland camper from Europe, hoping for a big payday; 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.

The Diesel Brothers salute the military with an action-packed night of insane stunts and it's all LIVE! Heavy D hopes to make history by jumping the Brodozer over a flying airplane, while Diesel Dave, the Muscle, and others attempt their own stunts.

The Diesel Brothers are back and this season premiere is bigger than ever. Get ready for a crazy night featuring an epic Blazer build, a wild race against a Lamborghini and a record breaking stunt - plus a huge announcement with the Dirty Mudder Truckers.

The Diesel Brothers complete their transformation on an old K5 Blazer and square body truck bed into the ultimate diesel-powered party on wheels. Meanwhile, Diesel Dave convinces Heavy D to give his El Camino what she needs to get back on the road.

Heavy D puts the pedal to the metal on his next SEMA build: a 6x6 with a custom full-track assembly that can handle any terrain in style. Meanwhile, Diesel Dave adds the finishing touches to his dream El Camino before revealing it at Monster Jam.

Heavy D has big plans to convert a Vietnam-era bridge boat into the world's only diesel-powered surf boat; the guys head to California to track down a rare Excursion to use in their next giveaway.

Heavy D is in deep with his insane diesel-powered boat conversion and is on the verge of seeing his dreams sink. Meanwhile, the race is on to get their MegaTrucks in working order before the epic showdown in the Pit against the Dirty 7.

Diesel Dave picks his first give-away truck and dreams big attempting to build the 2020 version of the Kodiak. Todd LeDuc challenges the guys to a desert race and flips the script by picking The Muscle to be on his team.

Diesel Dave continues work on his epic modern-day Kodiak while making sure he doesn't break the bank. Sam the Mad Scientist then unveils "The Kraken" -- a diesel-powered monowheel vehicle that is unlike anything the guys have ever seen.

Mad Scientist Sam's wild creation, The Kraken, comes to life but Heavy D continues to be skeptical of the build's potential viral success. A high profile client wants to customize a Ram 3500, which puts Diesel Dave and The Muscle to the test.

Heavy D surprises the mechanics with his latest build: a tank. He has big plans for the beast, but must first find a new engine and get it moving again. Meanwhile, Heavy D, Diesel Dave and the Muscle personally trick out their latest giveaway truck.

The Diesel Brothers continue work on their tank build, but engine and transmission troubles put the project in jeopardy.

No one builds bigger or badder diesel trucks than Heavy D, Diesel Dave & the crew at Dieselsellerz. Their mega builds & awesome truck giveaways are the stuff of diesel legend. Follow the team at Dieselsellerz as they trick out trucks; working…

The Diesel Brothers overhaul and auction off 10 iconic diesel vehicles.

The guys hope to score on the auction block with a rare diesel Cadillac.

Heavy D enlists a unique semi-amphibious off-road military vehicle that gives Redbeard a sinking feeling. Meanwhile, time's up for the Diesel Bi-Wheel, and they're left questioning its big debut.

Redbeard goes rogue taking on an iconic diesel vehicle build of his own. Will his Hail Mary cost them a Queen's Ransom? Meanwhile it's time to see if the Gama Goat will sink or swim -- literally.

Heavy D rolls the dice on a vintage 1951 International Diesel dozer with engine problems. Is he pushing his luck? Meanwhile, Redbeard announces their first-ever double giveaway to keep some cash flowing into the shop.

The guys get fired up about an overlanding rig, but it turns into a totaled smoke show. Can Heavy D save the day or is the auction going up in flames?

Heavy D bets the farm on a Diesel-swapped Chevy 210, but this rusty Rat Rod could run them off the road. Meanwhile, they're giving away a monstrous new TRX.

Work continues on the Diesel rat rod, but Heavy D's latest military build hits a snag.

Heavy D takes a chance on a unique double Corvette; Muscle takes the lead on a Denali for their latest giveaway.

Auction day is finally here and the guys are selling 16 unbelievable builds in the biggest gamble of their careers.