Here's some of our favorite finds from the 2014 SEMA ShowUpgrading and modifying cars and trucks is definitely "big business," and by that, we mean the automotive aftermarket is a $33.4-billion-per-year industry, according to the folks at the Special Equipment Market Association (SEMA). That's more money than Mark Zuckerberg, the CEO of Facebook, has amassed in the bank-and that's just one year of the auto-enhancement industry's income. The Diesel Power staff has been attending the SEMA Show for many years, and 2014 was one of the best we've ever seen.

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Photo Gallery: SEMA 2014 Diesel Engine Products - Billion Dollar Business

Photo Gallery: SEMA 2014 Diesel Engine Products - Billion Dollar Business



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