Chrysler introduced the "next generation magnum" engine in 1999 when it first debuted the V8 4.7L engine in the Jeep Grand Cherokee. In 2002 Chrysler came out with the V6 version of this engine family when it introduced the 3.7L engine in its Jeep Liberty. Both the 4.7L & 3.7L engine were strictly used for Chrysler's trucks and SUVs as they were not installed in any cars. Both of these engines were designed with cast iron blocks, fire ring on the crankshaft, aluminum cylinder heads & chain driven single overhead camshafts, providing better power, gas mileage and emission than the engines they replaced.

In 2002 Chrysler came out with a high output (HO) version of the 4.7 which they put in certain Grand Cherokee models through 2007. This 4.7 HO was rated about 30HP higher than the original design. In 2008 they redesigned the 4.7 which allowed a high output design in all vehicles. This engine has dual spark plugs, a more aggressive cam, increased compression ration & improved combustion chamber providing around 70 more HP and 30- 40LB.FT more torque.

The 3.7L engine has not changed much over the years. It is basically the 4.7 with 2 fewer cylinders. It replaced the 2.5L & 3.9L V6 engines previously used in Jeeps & trucks. The 3.7 also comes with a balance shaft to reduce the vibration commonly found in 90 degree V6 engines.

Promar Engine's quality control is second to none. Unlike most production engine rebuilders, Promar does not build their engines on an assembly line. We have 1 highly trained technician build your engine from start to finish. Every engine is tested and inspected by 2 people before it leaves our facility. Our Chrysler/Jeep/Dodge 3.7 & 4.7L engines are built to meet or exceed the original OEM specifications and are backed by our industry leading 3-year/unlimited mileage warranty.

Promar takes every step necessary to supply the best rebuilt/remanufactured engine available. Some of these steps include:

  • All machine work is performed on fully CNC machines.
  • Install new improved valve seats in cylinder heads
  • Installing new Melling Oil Pump
  • Installing new improved hypereutectic graphite coated pistons & piston rings to reduce piston noise and oil burning conditions.
  • Promar Installs updated MLS (Multi-Layer Steel) Head Gaskets
  • Improved Rear main seal
  • These blocks are magnifluxed, resurfaced, bored and diamond honed.
  • Cylinders are held to tolerances of .0001" (roundness & taper)
  • Crankshafts are ground and micro-polished, connecting rods are reconditioned, and cylinder heads are reconditioned receiving a 3 angle valve job.
  • new rod & main bearings, timing chains, tensioners & gears.
  • We supply all remaining gaskets to complete the installation.

Lastly, Promar offers free round-trip shipping to commercial locations within the continental 48 states. We do not require a core deposit, but we do require your engine core to be returned within 30 days to validate your warranty. For pricing please use the Engine Search tools above or call us toll free @ 1-800-422-6022.

Jeep Liberty 3.7 Engine

Fits the following vehicles

1999 Jeep Grand Cherokee Laredo 4.7 Engine
1999 Jeep Grand Cherokee Limited 4.7 Engine
2000 Dodge Dakota Base 4.7 Engine
2000 Dodge Dakota SLT 4.7 Engine
2000 Dodge Dakota Sport 4.7 Engine
2000 Dodge Durango Base 4.7 Engine
2000 Dodge Durango R/T 4.7 Engine
2000 Dodge Durango SLT 4.7 Engine
2000 Dodge Durango SLT Plus 4.7 Engine
2000 Dodge Durango Sport 4.7 Engine
2000 Jeep Grand Cherokee Laredo 4.7 Engine
2000 Jeep Grand Cherokee Limited 4.7 Engine
2001 Dodge Dakota Base 4.7 Engine
2001 Dodge Dakota SLT 4.7 Engine
2001 Dodge Dakota Sport 4.7 Engine
2001 Dodge Durango Base 4.7 Engine
2001 Dodge Durango R/T 4.7 Engine
2001 Dodge Durango SLT 4.7 Engine
2001 Jeep Grand Cherokee Laredo 4.7 Engine
2001 Jeep Grand Cherokee Limited 4.7 Engine
2002 Dodge Dakota Base 4.7 Engine
2002 Dodge Dakota SLT 4.7 Engine
2002 Dodge Dakota Sport 4.7 Engine
2002 Dodge Dakota SXT 4.7 Engine
2002 Dodge Durango R/T 4.7 Engine
2002 Dodge Durango SLT 4.7 Engine
2002 Dodge Durango SLT Plus 4.7 Engine
2002 Dodge Durango Sport 4.7 Engine
2002 Dodge Ram 1500 Base 3.7 Engine
2002 Dodge Ram 1500 Base 4.7 Engine
2002 Jeep Grand Cherokee Laredo 4.7 Engine
2002 Jeep Grand Cherokee Limited 4.7 Engine
2002 Jeep Grand Cherokee Overland 4.7 Engine
2002 Jeep Grand Cherokee Sport 4.7 Engine
2002 Jeep Liberty Limited 3.7 Engine
2002 Jeep Liberty Sport 3.7 Engine
2003 Dodge Dakota Base 4.7 Engine
2003 Dodge Dakota SLT 4.7 Engine
2003 Dodge Dakota Sport 4.7 Engine
2003 Dodge Durango R/T 4.7 Engine
2003 Dodge Durango SLT 4.7 Engine
2003 Dodge Durango SLT Plus 4.7 Engine
2003 Dodge Durango Sport 4.7 Engine
2003 Dodge Ram 1500 Base 3.7 Engine
2003 Dodge Ram 1500 Base 4.7 Engine
2003 Jeep Grand Cherokee Laredo 4.7 Engine
2003 Jeep Grand Cherokee Limited 4.7 Engine
2003 Jeep Grand Cherokee Overland 4.7 Engine
2003 Jeep Liberty Limited 3.7 Engine
2003 Jeep Liberty Renegade 3.7 Engine
2003 Jeep Liberty Sport 3.7 Engine
2004 Dodge Dakota Base 3.7 Engine
2004 Dodge Dakota SLT 3.7 Engine
2004 Dodge Dakota SLT 4.7 Engine
2004 Dodge Dakota SLT Plus 3.7 Engine
2004 Dodge Dakota SLT Plus 4.7 Engine
2004 Dodge Dakota Sport 3.7 Engine
2004 Dodge Dakota Sport 4.7 Engine
2004 Dodge Dakota Sport Plus 3.7 Engine
2004 Dodge Dakota Sport Plus 4.7 Engine
2004 Dodge Dakota Stampede 3.7 Engine
2004 Dodge Dakota SXT 3.7 Engine
2004 Dodge Durango Limited 4.7 Engine
2004 Dodge Durango SLT 3.7 Engine
2004 Dodge Durango SLT 4.7 Engine
2004 Dodge Durango ST 3.7 Engine
2004 Dodge Durango ST 4.7 Engine
2004 Dodge Ram 1500 SLT 4.7 Engine
2004 Dodge Ram 1500 ST 3.7 Engine
2004 Dodge Ram 1500 ST 4.7 Engine
2004 Jeep Grand Cherokee Laredo 4.7 Engine
2004 Jeep Grand Cherokee Limited 4.7 Engine
2004 Jeep Grand Cherokee Overland 4.7 Engine
2004 Jeep Grand Cherokee Special Edition 4.7 Engine
2004 Jeep Liberty Limited 3.7 Engine
2004 Jeep Liberty Renegade 3.7 Engine
2004 Jeep Liberty Sport 3.7 Engine
2005 Dodge Dakota Laramie 3.7 Engine
2005 Dodge Dakota Laramie 4.7 Engine
2005 Dodge Dakota SLT 3.7 Engine
2005 Dodge Dakota SLT 4.7 Engine
2005 Dodge Dakota Sport 3.7 Engine
2005 Dodge Dakota Sport 4.7 Engine
2005 Dodge Dakota ST 3.7 Engine
2005 Dodge Dakota ST 4.7 Engine
2005 Dodge Durango Limited 4.7 Engine
2005 Dodge Durango SLT 3.7 Engine
2005 Dodge Durango SLT 4.7 Engine
2005 Dodge Durango ST 3.7 Engine
2005 Dodge Durango ST 4.7 Engine
2005 Dodge Durango SXT 4.7 Engine
2005 Dodge Ram 1500 SLT 4.7 Engine
2005 Dodge Ram 1500 ST 3.7 Engine
2005 Dodge Ram 1500 ST 4.7 Engine
2005 Jeep Grand Cherokee Laredo 3.7 Engine
2005 Jeep Grand Cherokee Laredo 4.7 Engine
2005 Jeep Grand Cherokee Limited 4.7 Engine
2005 Jeep Liberty Limited 3.7 Engine
2005 Jeep Liberty Renegade 3.7 Engine
2005 Jeep Liberty Rocky Mountain Edition 3.7 Engine
2005 Jeep Liberty Sport 3.7 Engine
2006 Dodge Dakota Laramie 3.7 Engine
2006 Dodge Dakota Laramie 4.7 Engine
2006 Dodge Dakota SLT 3.7 Engine
2006 Dodge Dakota SLT 4.7 Engine
2006 Dodge Dakota ST 3.7 Engine
2006 Dodge Dakota ST 4.7 Engine
2006 Dodge Durango Adventurer 4.7 Engine
2006 Dodge Durango Limited 4.7 Engine
2006 Dodge Durango SLT 3.7 Engine
2006 Dodge Durango SLT 4.7 Engine
2006 Dodge Durango SXT 3.7 Engine
2006 Dodge Durango SXT 4.7 Engine
2006 Dodge Ram 1500 Laramie 4.7 Engine
2006 Dodge Ram 1500 SLT 4.7 Engine
2006 Dodge Ram 1500 ST 3.7 Engine
2006 Dodge Ram 1500 ST 4.7 Engine
2006 Dodge Ram 1500 TRX4 4.7 Engine
2006 Jeep Commander 65th Anniversary Edition 3.7 Engine
2006 Jeep Commander 65th Anniversary Edition 4.7 Engine
2006 Jeep Commander Base 3.7 Engine
2006 Jeep Commander Base 4.7 Engine
2006 Jeep Commander Limited 4.7 Engine
2006 Jeep Grand Cherokee 65th Anniversary Edition 3.7 Engine
2006 Jeep Grand Cherokee 65th Anniversary Edition 4.7 Engine
2006 Jeep Grand Cherokee Laredo 3.7 Engine
2006 Jeep Grand Cherokee Laredo 4.7 Engine
2006 Jeep Grand Cherokee Limited 4.7 Engine
2006 Jeep Liberty 65th Anniversary Edition 3.7 Engine
2006 Jeep Liberty Limited 3.7 Engine
2006 Jeep Liberty Renegade 3.7 Engine
2006 Jeep Liberty Sport 3.7 Engine
2006 Mitsubishi Raider DuroCross 3.7 Engine
2006 Mitsubishi Raider DuroCross 4.7 Engine
2006 Mitsubishi Raider LS 3.7 Engine
2006 Mitsubishi Raider XLS 4.7 Engine
2007 Chrysler Aspen Limited 4.7 Engine
2007 Dodge Dakota Laramie 3.7 Engine
2007 Dodge Dakota Laramie 4.7 Engine
2007 Dodge Dakota SLT 3.7 Engine
2007 Dodge Dakota SLT 4.7 Engine
2007 Dodge Dakota ST 3.7 Engine
2007 Dodge Dakota ST 4.7 Engine
2007 Dodge Durango Adventurer 4.7 Engine
2007 Dodge Durango Limited 4.7 Engine
2007 Dodge Durango SLT 3.7 Engine
2007 Dodge Durango SLT 4.7 Engine
2007 Dodge Durango SXT 3.7 Engine
2007 Dodge Durango SXT 4.7 Engine
2007 Dodge Nitro SLT 3.7 Engine
2007 Dodge Nitro SXT 3.7 Engine
2007 Dodge Ram 1500 SLT 4.7 Engine
2007 Dodge Ram 1500 ST 3.7 Engine
2007 Dodge Ram 1500 ST 4.7 Engine
2007 Dodge Ram 1500 TRX4 4.7 Engine
2007 Jeep Commander Base 3.7 Engine
2007 Jeep Commander Base 4.7 Engine
2007 Jeep Commander Limited 4.7 Engine
2007 Jeep Grand Cherokee Laredo 3.7 Engine
2007 Jeep Grand Cherokee Laredo 4.7 Engine
2007 Jeep Grand Cherokee Limited 4.7 Engine
2007 Jeep Liberty Limited 3.7 Engine
2007 Jeep Liberty Sport 3.7 Engine
2007 Mitsubishi Raider DuroCross 3.7 Engine
2007 Mitsubishi Raider LS 3.7 Engine
2007 Mitsubishi Raider LS 4.7 Engine
2007 Mitsubishi Raider SE 4.7 Engine
2008 Chrysler Aspen Limited 4.7 Engine
2008 Dodge Dakota Laramie 4.7 Engine
2008 Dodge Dakota SLT 3.7 Engine
2008 Dodge Dakota SLT 4.7 Engine
2008 Dodge Dakota Sport 3.7 Engine
2008 Dodge Dakota Sport 4.7 Engine
2008 Dodge Dakota ST 3.7 Engine
2008 Dodge Dakota SXT 3.7 Engine
2008 Dodge Dakota SXT 4.7 Engine
2008 Dodge Dakota TRX 3.7 Engine
2008 Dodge Dakota TRX 4.7 Engine
2008 Dodge Dakota TRX4 3.7 Engine
2008 Dodge Dakota TRX4 4.7 Engine
2008 Dodge Durango Adventurer 4.7 Engine
2008 Dodge Durango Limited 4.7 Engine
2008 Dodge Durango SLT 3.7 Engine
2008 Dodge Durango SLT 4.7 Engine
2008 Dodge Durango SLT Plus 3.7 Engine
2008 Dodge Durango SLT Plus 4.7 Engine
2008 Dodge Durango SXT 3.7 Engine
2008 Dodge Durango SXT 4.7 Engine
2008 Dodge Nitro ATX 3.7 Engine
2008 Dodge Nitro SE 3.7 Engine
2008 Dodge Nitro SLT 3.7 Engine
2008 Dodge Nitro SXT 3.7 Engine
2008 Dodge Ram 1500 SLT 4.7 Engine
2008 Dodge Ram 1500 ST 3.7 Engine
2008 Dodge Ram 1500 ST 4.7 Engine
2008 Dodge Ram 1500 SXT 3.7 Engine
2008 Dodge Ram 1500 SXT 4.7 Engine
2008 Jeep Commander Limited 4.7 Engine
2008 Jeep Commander Sport 3.7 Engine
2008 Jeep Commander Sport 4.7 Engine
2008 Jeep Grand Cherokee Laredo 3.7 Engine
2008 Jeep Grand Cherokee Laredo 4.7 Engine
2008 Jeep Grand Cherokee Limited 4.7 Engine
2008 Jeep Liberty Limited 3.7 Engine
2008 Jeep Liberty North Edition 3.7 Engine
2008 Jeep Liberty Sky Slider 3.7 Engine
2008 Jeep Liberty Sport 3.7 Engine
2008 Mitsubishi Raider LS 3.7 Engine
2009 Chrysler Aspen Limited 4.7 Engine
2009 Dodge Dakota Big Horn 3.7 Engine
2009 Dodge Dakota Big Horn 4.7 Engine
2009 Dodge Dakota Laramie 4.7 Engine
2009 Dodge Dakota Lone Star 3.7 Engine
2009 Dodge Dakota Lone Star 4.7 Engine
2009 Dodge Dakota SLT 4.7 Engine
2009 Dodge Dakota ST 3.7 Engine
2009 Dodge Dakota SXT 3.7 Engine
2009 Dodge Dakota TRX4 3.7 Engine
2009 Dodge Dakota TRX4 4.7 Engine
2009 Dodge Durango Adventurer 4.7 Engine
2009 Dodge Durango Limited 4.7 Engine
2009 Dodge Durango SLT 3.7 Engine
2009 Dodge Durango SLT 4.7 Engine
2009 Dodge Durango SXT 3.7 Engine
2009 Dodge Durango SXT 4.7 Engine
2009 Dodge Nitro SE 3.7 Engine
2009 Dodge Nitro SLT 3.7 Engine
2009 Dodge Nitro SXT 3.7 Engine
2009 Dodge Ram 1500 SLT 4.7 Engine
2009 Dodge Ram 1500 ST 3.7 Engine
2009 Dodge Ram 1500 ST 4.7 Engine
2009 Dodge Ram 1500 TRX 4.7 Engine
2009 Dodge Ram 1500 TRX4 4.7 Engine
2009 Jeep Commander Limited 4.7 Engine
2009 Jeep Commander Sport 3.7 Engine
2009 Jeep Commander Sport 4.7 Engine
2009 Jeep Grand Cherokee Laredo 3.7 Engine
2009 Jeep Grand Cherokee Laredo 4.7 Engine
2009 Jeep Grand Cherokee Limited 4.7 Engine
2009 Jeep Liberty Limited 3.7 Engine
2009 Jeep Liberty Sport 3.7 Engine
2009 Mitsubishi Raider LS 3.7 Engine
2010 Dodge Dakota Big Horn 3.7 Engine
2010 Dodge Dakota Big Horn 4.7 Engine
2010 Dodge Dakota Laramie 3.7 Engine
2010 Dodge Dakota Laramie 4.7 Engine
2010 Dodge Dakota Lone Star 3.7 Engine
2010 Dodge Dakota Lone Star 4.7 Engine
2010 Dodge Dakota SLT 4.7 Engine
2010 Dodge Dakota ST 3.7 Engine
2010 Dodge Dakota SXT 3.7 Engine
2010 Dodge Dakota TRX4 4.7 Engine
2010 Dodge Nitro Base 3.7 Engine
2010 Dodge Nitro SE 3.7 Engine
2010 Dodge Nitro SXT 3.7 Engine
2010 Dodge Ram 1500 SLT 4.7 Engine
2010 Dodge Ram 1500 ST 3.7 Engine
2010 Dodge Ram 1500 ST 4.7 Engine
2010 Dodge Ram 1500 TRX 4.7 Engine
2010 Dodge Ram 1500 TRX4 4.7 Engine
2010 Jeep Commander Limited Premium 4.7 Engine
2010 Jeep Commander Sport 3.7 Engine
2010 Jeep Grand Cherokee Laredo 3.7 Engine
2010 Jeep Grand Cherokee Laredo 4.7 Engine
2010 Jeep Grand Cherokee Limited 3.7 Engine
2010 Jeep Grand Cherokee Limited 4.7 Engine
2010 Jeep Grand Cherokee North Edition 3.7 Engine
2010 Jeep Grand Cherokee S Limited 3.7 Engine
2010 Jeep Liberty Limited 3.7 Engine
2010 Jeep Liberty Renegade 3.7 Engine
2010 Jeep Liberty Sport 3.7 Engine
2010 Ram Dakota SLT 3.7 Engine
2010 Ram Pickup ST 3.7 Engine
2010 Ram Pickup ST 4.7 Engine
2011 Dodge Nitro Base 3.7 Engine
2011 Dodge Nitro Heat 3.7 Engine
2011 Dodge Nitro SXT Premium 3.7 Engine
2011 Jeep Liberty Limited 3.7 Engine
2011 Jeep Liberty North Edition 3.7 Engine
2011 Jeep Liberty Renegade 3.7 Engine
2011 Jeep Liberty Sport 3.7 Engine
2011 Ram 1500 Outdoorsman 4.7 Engine
2011 Ram 1500 SLT 4.7 Engine
2011 Ram 1500 ST 3.7 Engine
2011 Ram 1500 ST 4.7 Engine
2011 Ram 1500 SXT 3.7 Engine
2011 Ram 1500 SXT 4.7 Engine
2011 Ram Dakota Big Horn 3.7 Engine
2011 Ram Dakota Big Horn 4.7 Engine
2011 Ram Dakota Laramie 3.7 Engine
2011 Ram Dakota Laramie 4.7 Engine
2011 Ram Dakota SLT 3.7 Engine
2011 Ram Dakota SLT 4.7 Engine
2011 Ram Dakota ST 3.7 Engine
2011 Ram Dakota SXT 3.7 Engine
2011 Ram Dakota TRX4 4.7 Engine
2011 Ram Pickup ST 3.7 Engine
2011 Ram Pickup ST 4.7 Engine
2012 Dodge Nitro Base 3.7 Engine
2012 Dodge Nitro SXT 3.7 Engine
2012 Jeep Liberty Jet 3.7 Engine
2012 Jeep Liberty Limited 3.7 Engine
2012 Jeep Liberty Limited Edition 3.7 Engine
2012 Jeep Liberty North Edition 3.7 Engine
2012 Jeep Liberty Sport 3.7 Engine
2012 Ram 1500 SLT 4.7 Engine
2012 Ram 1500 ST 3.7 Engine
2012 Ram 1500 ST 4.7 Engine
2012 Ram 1500 Tradesman 4.7 Engine
2012 Ram Dakota SLT 3.7 Engine
2012 Ram Pickup ST 3.7 Engine
2012 Ram Pickup ST 4.7 Engine
2013 Jeep Liberty Limited 3.7 Engine
2013 Jeep Liberty Sport 3.7 Engine
2013 Ram 1500 SLT 4.7 Engine
2013 Ram 1500 ST 4.7 Engine
2013 Ram 1500 SXT 4.7 Engine
2013 Ram 1500 Tradesman 4.7 Engine
2013 Ram Pickup ST 3.7 Engine
2013 Ram Pickup ST 4.7 Engine