Heavy D puts the petal 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 sends Diesel Dave and The Muscle on a secret late-night mission to the spooky overflow lot. However, completing their task becomes difficult when they remember all the builds they've done throughout the years.

Heavy D has big plans to convert a Vietnam-era bridge boat into the world's only diesel-powered surf boat. Later, 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.

Extreme weather puts the Brodozer's jump over a flying airplane in jeopardy, as Heavy D and the other stuntmen must make their death-defying World Record attempts without practice, on Live TV, in the worst conditions the area has seen in decades.

In the season premiere, the Diesel Brothers celebrate Memorial Day and salute the men and women of the Armed Forces the best way they know how -- epic builds, special celebrity guests and a crazy stunt to cap off the night.

The Diesel Brothers are hunkered down and preparing for the worst -- a zombie apocalypse! They share the best trucks for outrunning zombies, interview experts and get ready for an epic Zombie Battle.

Diesel Nation rolls out the red carpet for some of the biggest stars the show has ever seen. From Shaquille O'Neal to Guy Fieri, the guys check out awesome garages and challenge each other to spicy competition.

Nobody's perfect -- not even the Diesel Brothers. Special guests such as Richard Petty and Farmtruck and AZN relive their most embarrassing moments, and Keith Spiker from the Dirty 7 has no idea what kind of redemption battle he's in for.

The Diesel Brothers are back! Diesel Dave picks his first giveaway 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.