231(3.8L) V6: Replaced the 4.0 for the 2007 Model Year in Wranglers.
350(5.7L) V8: The 5.7L Hemi returned as an option for the WK's and XK's.
287(4.7L) V8: The 287(4.7L) V8 engine is an optional engine in WJ's, WK's, XK's.
172(2.8L) I4: L i turbodiesel VM Motor engine became available in the KJ CRD models for the 05'-06' model years.
246(2.4L) I4: Improved 4 cylinder engine replacing the 2.5L in the 2002 Model Year.
225(3.7L) V6: Introduced in the 2002 Model year with the Jeep KJ
Dodge 360(5.9L) V8: The 360(5.9L) V8 engine is an optional engine in 1998 ZJs.
Dodge 318(5.2L) V8: The 318(5.2L) V8 engine is used in ZJs.
AMC 242(4.0L) I6: The 242(4.0L) I6 engine is used in late 80s XJs and MJs and in 90s YJs, ZJs, and TJs.
AMC 150(2.5L) I4: The 150(2.5L) I4 engine was used in mid 80s CJ-5s and CJ-7s, through to the YJs, XJs, MJs, and TJs through the 2001 model year.
GM 173(2.8L) V6: The 173(2.8L) V6 engine was used in '84 to '86 in Cherokees and in '86 Comanches.
GM 151 I4: The GM Pontiac 151 I4 engine was used in early 80s CJ-5s and CJ-7s.
AMC 401 V8: The AMC 401 V8 engine was used in 70s and 80s Cherokees, Wagoneers, and pickups.
AMC 360 V8: The AMC 360 V8 engine was used in 70s and 80s Cherokees, Wagoneers, and pickups.
AMC 304 V8: The AMC 304 V8 engine was used in 70s and 80s CJ-5s, CJ-7s, Cherokees, Wagoneers, and pickups.
AMC 258 I6: The AMC 258 I6 engine was used in 70s and 80s CJ-5s, CJ-7s, Cherokees, Wagoneers, and pickups.
AMC 232 I6: The AMC 232 I6 engine was used in 70s CJ-5s, CJ-7s, Cherokees, Wagoneers, and pickups.
Buick 350 V8: The "Dauntless" 350 V8 engine was used in early Wagoneers and full size pickups.
Buick 225 V6: The "Dauntless" 225 V6 engine was used in CJ-5s, CJ-6s, and Jeepster/Commandos.
AMC 327 V8: The "Vigilante" AMC 327 V8 engine was used in J-series pickups and Wagoneers from 1965 until 1968.
Kaiser 230 I6: The "Tornado" 230 I6 engine was used in Willys pickups, Willys Wagons, M715s, M725s, early Wagoneers, and early full size pickups.
Perkins 192 I4: The Perkins 192 I4 diesel engine was used in '61-'65 CJ-5s and CJ-6s. Very few CJs were actually produced with this optional engine.
Willys 226 I6: The "Super Hurricane" 226 I6 engine was used in Willys pickups, Willys Wagons, and FC trucks.
Willys 134 I4 F-Head: The "Hurricane" 134 I4 engine replaced the L-Head in Willys pickups and Willys Wagons. It also was used in M38-A1s, M170, CJ-3Bs, CJ-5s, CJ-6s, and FC trucks.
Willys 134 I4: The "Go Devil" 134 I4 engine was used in MBs, M38s, CJ-2As, CJ-3As, DJ-3As, Willys Wagons, Willys Pickups, and VJs.