Jeep TJ Wrangler Diesel Engine - Diesel Crate Engine. A Little Diesel For Your Jeep, Mini-Truck, Or Custom Wheeler. Mopar Photographer Fred Williams Writer Jul 01, 2008. See All 9 Photos.

Jeep Wrangler TJ Engine Specs The key to the TJ’s enduring appeal isn’t just its looks or suspension—it’s the engine. The AMC-designed 4.0-liter straight-six is an absolute oak .