Jeep Liberty 3.7L Engine for Sale | OEM Used Chrysler PowerTech 3.7 Liter V6
$1,600.00
At a Glance
- Condition: OEM used, compression and leak-down tested all 6 cylinders
- Availability: In stock, Chrysler PowerTech 3.7L V6 engine available
- Shipping: Free shipping to all 50 states via heavy freight, 7 to 14 business days
- Engine verified as Chrysler PowerTech 3.7L V6 (engine code EKG, 2002-2012 production span)
- Application confirmed (Jeep Liberty KJ / KK, Jeep Wrangler TJ / JK, Dodge Dakota, Dodge Nitro, Mitsubishi Raider, Ram Dakota)
- Horsepower rating documented (210 HP at 5,200 RPM, 235 lb-ft at 4,000 RPM)
- Compression and leak-down tested all 6 cylinders
- Both cylinder heads condition documented
- Cooling system integrity verified
- Timing chain condition assessed
- Honest disclosure of PowerTech 3.7L documented reliability concerns
- 15 day replacement warranty on internal defects
Description
About the Chrysler 3.7L PowerTech V6 Engine
Looking for a replacement engine for your Jeep Liberty 3.7L? Part Nests stocks OEM used Chrysler PowerTech 3.7L V6 engines for the Jeep Liberty, Jeep Wrangler, Dodge Dakota, Dodge Nitro, Mitsubishi Raider, and related applications. The 3.7L PowerTech (engine code EKG) is the smaller V6 sibling of the 4.7L PowerTech V8 (per our listing), sharing similar SOHC 2-valve architecture and design philosophy. Introduced in 2002 for the Jeep Liberty KJ launch as a replacement for the older 4.0L AMC inline-6, the 3.7L PowerTech served across Jeep Liberty, Wrangler TJ / JK V6 variants, Dodge Dakota, Dodge Nitro, and other applications through approximately 2012. With 210 HP at 5,200 RPM and 235 lb-ft of torque at 4,000 RPM, the 3.7L PowerTech provided modest V6 performance for mid-size Jeep and Dodge applications.
Engine Overview: 3.7L PowerTech V6 Architecture
- Displacement: 3.7 liters (3,701 cc / 226 cubic inches)
- Configuration: 90-degree V6 (related to 4.7L PowerTech V8 architecture)
- Bore x Stroke: 93 mm x 90.8 mm
- Power Output: 210 HP at 5,200 RPM
- Peak Torque: 235 lb-ft at 4,000 RPM
- Cylinder Head: Aluminum, SOHC (Single Overhead Cam), 2 valves per cylinder (12 valves total)
- Block: Cast iron block
- Aspiration: Naturally aspirated
- Fuel System: Sequential multi-port fuel injection (NOT direct injection)
- Variable Valve Timing: NO (the SOHC architecture does not have VVT)
- Timing chain driven
- Engine code: EKG (Chrysler internal designation)
3.7L PowerTech Applications
- Jeep Liberty KJ (2002-2007): First-generation Liberty, primary application
- Jeep Liberty KK (2008-2012): Second-generation Liberty
- Jeep Wrangler TJ V6 (some applications): V6 alternative to 4.0L AMC inline-6
- Jeep Wrangler JK V6 (2007-2011): Pre-3.6L Pentastar Wrangler V6 variant
- Dodge Dakota (2005-2011): Mid-size pickup base V6 variant
- Dodge Nitro (2007-2012): Compact SUV V6 application
- Mitsubishi Raider (2006-2009): Rebadged Dodge Dakota for Mitsubishi (rare application)
- Ram Dakota (2011): Final Dakota year under Ram branding
3.7L PowerTech vs 4.7L PowerTech: The Family Relationship
The 3.7L PowerTech V6 (this listing) and the 4.7L PowerTech V8 (per our listing) share the same general design philosophy and were developed alongside each other:
- Architecture: Both use SOHC 2-valve cylinder heads, cast iron block, port fuel injection, no VVT, timing chain driven
- Displacement: 3.7L V6 vs 4.7L V8 (smaller V6 sibling of the V8)
- Era: Both 1999-2013 era Chrysler engines
- Reliability profile: Both share similar reliability concerns including cooling system issues and timing chain wear (though the 3.7L has different specific failure patterns)
- Successor: Both were replaced by the 3.6L Pentastar V6 in most applications
Chrysler V6 / V8 Engine Family Context
The Chrysler 3.7L PowerTech V6 (this listing) is the smaller V6 from the PowerTech family. For broader Chrysler engine family context: the 4.7L PowerTech V8 (our listing, the workhorse 4.7L V8 in the Chrysler / Dodge / Jeep light-duty lineup from 1999 through 2013 across Dodge Ram / Dakota / Durango / Jeep Grand Cherokee WJ / WK / Commander applications) is the larger V8 sibling sharing the same SOHC 2-valve architecture and design philosophy. The 3.6L Pentastar engine (our listing, the Chrysler / FCA / Stellantis modern V6 workhorse for Jeep Wrangler / Grand Cherokee / Cherokee / Renegade / Dodge Charger / Challenger / Durango / Chrysler 300 / Pacifica / Ram 1500 applications 2011 plus) is the modern V6 that replaced both the 3.7L PowerTech V6 and the 4.7L PowerTech V8 in most applications as Chrysler moved to a unified V6 base engine for fuel economy. The Jeep NV3550 5-speed manual (our listing) is the transmission paired with the 3.7L PowerTech in Liberty KJ applications. The 3.7L PowerTech (this listing), 4.7L PowerTech V8, and 3.6L Pentastar V6 represent the evolution of Chrysler / Dodge / Jeep V6 / V8 engines through the 1999-2020 era.
Common 3.7L PowerTech Failure Modes
- Cylinder head crack: Particularly the rear head can develop cracks at high mileage, often related to overheating events
- Cooling system / head gasket issues: Similar pattern to the 4.7L PowerTech V8; coolant loss can cause overheating and head gasket damage
- Timing chain wear: Chain stretch and tensioner wear at high mileage; replacement requires engine-out labor
- Valve seat / valve guide issues: Some 3.7L PowerTech engines exhibit valve seat erosion at high mileage
- Oil sludge buildup: With extended oil change intervals or low-quality oil
- Coolant temperature sensor failure: Common wear item causing incorrect temperature readings
- Crankshaft position sensor failure: Common wear item causing intermittent running or no-start
Vehicle Compatibility
| Engine | Displacement | Configuration | HP | Common Applications |
|---|---|---|---|---|
| 3.7L PowerTech V6 (EKG), THIS LISTING | 3.7 L | V6 | 210 HP | Liberty, Dakota, Grand Cherokee base, Ram 1500 base, Nitro |
| 4.7L PowerTech V8 | 4.7 L | V8 | 235-310 HP | Grand Cherokee, Ram 1500, Dakota R/T, Durango, Commander |
3.7L PowerTech Architecture and Applications
| Vehicle | Years | Notes |
|---|---|---|
| Jeep Liberty KJ (1st gen), THIS | 2002-2007 | The original Liberty, replaced the XJ Cherokee |
| Jeep Liberty KK (2nd gen), THIS | 2008-2012 | Refreshed Liberty with updated styling |
| Jeep Grand Cherokee WJ | 2002-2004 | Base trim only with 3.7 option |
| Jeep Grand Cherokee WK | 2005-2010 | Base trim only |
| Dodge Dakota | 2005-2010 | Standard engine in mid-size truck |
| Dodge Nitro | 2007-2011 | Compact SUV (Liberty platform mate) |
| Dodge Ram 1500 | 2002-2004 | Base trim with 3.7 option |
| Chrysler Aspen | Limited | Full-size SUV (Durango-based) |
| Mitsubishi Raider | 2006-2009 | Mid-size truck (Dakota platform mate) |
Common Failure Modes and Maintenance Reference
| Vehicle | Compatibility |
|---|---|
| Jeep Liberty KJ (1st generation) | 2002-2007 with 3.7L PowerTech V6 |
| Jeep Liberty KK (2nd generation) | 2008-2012 with 3.7L PowerTech V6 |
| Jeep Grand Cherokee WJ (3rd gen base) | 2002-2004 with 3.7 option |
| Jeep Grand Cherokee WK (4th gen base) | 2005-2010 with 3.7 option |
| Dodge Dakota (3rd gen) | 2005-2010 mid-size truck with 3.7 standard |
| Dodge Nitro | 2007-2011 compact SUV (Liberty platform) |
| Dodge Ram 1500 | 2002-2004 base trim with 3.7 option |
| Chrysler Aspen | Limited applications |
| Mitsubishi Raider | 2006-2009 (Dakota platform mate) |
Why Buy From Part Nests
- Engine verified as Chrysler PowerTech 3.7L V6 (engine code EKG, 2002-2012 production span)
- Application confirmed (Jeep Liberty KJ / KK, Jeep Wrangler TJ / JK, Dodge Dakota, Dodge Nitro, Mitsubishi Raider, Ram Dakota)
- Horsepower rating documented (210 HP at 5,200 RPM, 235 lb-ft at 4,000 RPM)
- Compression and leak-down tested all 6 cylinders
- Both cylinder heads condition documented
- Cooling system integrity verified
- Timing chain condition assessed
- Honest disclosure of PowerTech 3.7L documented reliability concerns
- Free shipping to all 50 states via heavy freight
- 15 day replacement warranty on internal defects
- Chrysler / Dodge / Jeep experienced support team familiar with PowerTech engine family
- Call (855) 634-4447 to confirm the correct part for your build before ordering.
15 Day Replacement Warranty
Every used Chrysler 3.7L PowerTech V6 engine purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date.
What Is Covered
- Internal defects already present when the engine arrives
- Compression failures on any of the 6 cylinders beyond what was disclosed
- Cylinder head crack failures within 15 days from installation (where cylinder head condition was documented as serviceable)
- Block crack failures within 15 days from installation
- Connecting rod, bearing, or crankshaft failures within 15 days from installation
- Timing chain failures within 15 days from installation (where chain condition was documented as serviceable)
- Head gasket failures within 15 days from installation (where cooling system integrity was verified)
- Sensor failures within 15 days from installation (coolant temperature, crankshaft position, camshaft position)
- Incorrect application shipped (Liberty KJ vs KK vs Dakota vs Nitro mismatch where application was documented) due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from incorrect engine oil (Chrysler specifies 5W-30 or 5W-20 depending on application)
- Damage from extended oil change intervals (5,000 mile intervals recommended given documented sludge concern)
- Damage from neglected cooling system maintenance (cooling / head gasket issues are a documented PowerTech concern)
- Damage from a single overheating event during installation or break-in
- Damage from contaminated fuel
- Damage from neglected timing chain tensioner replacement
- External components (intake manifold, exhaust manifolds, ECU and wiring harness, accessory drive, transmission, AC compressor, alternator, starter, fuel tank, fuel lines outside engine) unless itemized
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (855) 634-4447.
- All 6 Cylinders Compression and Leak-Down Tested: Results documented before payment
- Engine Verified: Chrysler PowerTech 3.7L V6 (engine code EKG)
- Application Confirmed: Jeep Liberty KJ / KK / Wrangler TJ / JK V6 / Dakota / Nitro
- Horsepower Documented: 210 HP at 5,200 RPM
- Both Cylinder Heads Documented: 90-degree V6 with two heads
- Cooling System Integrity Verified: Documented PowerTech wear point checked
- Honest Reliability Disclosure: PowerTech 3.7L concerns explained before sale
- 15 Day Replacement Cover: Internal defects protected from delivery onward
Additional information
| Brand | Chrysler |
|---|---|
| engine-type | 90-degree V6, naturally aspirated, SOHC |
| engine-family | Chrysler PowerTech V engine family |
| engine-code | EKG |
| manufacturer | Chrysler Corporation |
| horsepower | 210 HP at 5, 200 RPM |
| displacement | 3.7 liters (3, 700 cc; 226 cubic inches) |
| bore-x-stroke | 93.0 mm x 90.8 mm |
| torque | 235 lb-ft at 4, 000 RPM |
| compression-ratio | 9.6:1 |
| aspiration | Naturally aspirated |
| fuel-system | Sequential multi-port electronic fuel injection |
| fuel-type | Regular 87 octane unleaded |
| valvetrain | SOHC, 12 valves (2 per cylinder) |
| block-material | Cast iron block |
| head-material | Aluminum |
| cooling-system | Liquid cooled |
| production-years | 2002-2012 |
| replaced-by | Chrysler 3.6L Pentastar V6 (2011+) |
| direct-fit | Jeep Liberty KJ / KK, Grand Cherokee, Dakota, Nitro, Ram 1500 base, Aspen, Raider |
Chrysler PowerTech 3.7L V6 the smaller sibling of the 4.7L PowerTech V8. The Jeep Liberty 3.7L engine is the OEM Chrysler PowerTech 3.7L V6 (engine code EKG) the smaller V6 sibling of the 4.7L PowerTech V8 (per our listing), sharing similar SOHC 2-valve architecture and design philosophy. Introduced in 2002 for the Jeep Liberty KJ launch as a replacement for the older 4.0L AMC inline-6, the 3.7L PowerTech served across Jeep Liberty, Wrangler TJ / JK V6 variants, Dodge Dakota, Dodge Nitro, and other applications through approximately 2012. Specifications: 3.7 liters displacement (3,701 cc / 226 cubic inches), 90-degree V6, aluminum SOHC 2-valve heads (12 valves total), cast iron block, naturally aspirated, port fuel injection (NOT direct injection), no VVT, timing chain driven, 210 HP at 5,200 RPM, 235 lb-ft at 4,000 RPM.
Same architecture family, smaller V6 sibling of the V8. The 3.7L PowerTech V6 (this listing) and the 4.7L PowerTech V8 (per our listing) share the same general design philosophy and were developed alongside each other. Architecture: both use SOHC 2-valve cylinder heads, cast iron block, port fuel injection, no VVT, timing chain driven. Displacement: 3.7L V6 vs 4.7L V8 (smaller V6 sibling of the V8). Era: both 1999-2013 era Chrysler engines. Reliability profile: both share similar reliability concerns including cooling system issues and timing chain wear (though the 3.7L has different specific failure patterns). Successor: both were replaced by the 3.6L Pentastar V6 in most applications.
Multiple Chrysler / Dodge / Jeep / Mitsubishi applications 2002-2012. Jeep Liberty KJ (2002-2007): first-generation Liberty, primary application. Jeep Liberty KK (2008-2012): second-generation Liberty. Jeep Wrangler TJ V6 (some applications): V6 alternative to 4.0L AMC inline-6. Jeep Wrangler JK V6 (2007-2011): pre-3.6L Pentastar Wrangler V6 variant. Dodge Dakota (2005-2011): mid-size pickup base V6 variant. Dodge Nitro (2007-2012): compact SUV V6 application. Mitsubishi Raider (2006-2009): rebadged Dodge Dakota for Mitsubishi (rare application). Ram Dakota (2011): final Dakota year under Ram branding. Cross-application across these chassis is possible but requires careful ECU, accessory, and engine mount verification.
Three Chrysler engines across batches. The Chrysler 3.7L PowerTech V6 (this listing) is the smaller V6 from the PowerTech family. The 4.7L PowerTech V8 from is the larger V8 sibling sharing the same SOHC 2-valve architecture and design philosophy (used 1999-2013 in Dodge Ram / Dakota / Durango / Jeep Grand Cherokee WJ / WK / Commander applications). The 3.6L Pentastar engine from is the Chrysler / FCA / Stellantis modern V6 workhorse for Jeep Wrangler / Grand Cherokee / Cherokee / Renegade / Dodge Charger / Challenger / Durango / Chrysler 300 / Pacifica / Ram 1500 applications 2011 plus, the modern V6 that replaced both the 3.7L PowerTech V6 and the 4.7L PowerTech V8 in most applications as Chrysler moved to a unified V6 base engine for fuel economy. The Jeep NV3550 5-speed manual is the transmission paired with the 3.7L PowerTech in Liberty KJ applications.
Seven well-documented failure modes. Cylinder head crack: particularly the rear head can develop cracks at high mileage, often related to overheating events. Cooling system / head gasket issues: similar pattern to the 4.7L PowerTech V8; coolant loss can cause overheating and head gasket damage. Timing chain wear: chain stretch and tensioner wear at high mileage; replacement requires engine-out labor. Valve seat / valve guide issues: some 3.7L PowerTech engines exhibit valve seat erosion at high mileage. Oil sludge buildup: with extended oil change intervals or low-quality oil. Coolant temperature sensor failure: common wear item causing incorrect temperature readings. Crankshaft position sensor failure: common wear item causing intermittent running or no-start. Most failures can be prevented or delayed by proper oil and coolant maintenance plus addressing overheating events immediately.
No. The 3.7L PowerTech is NOT a HEMI engine. The 3.7L PowerTech (and its V8 sibling 4.7L PowerTech) is a SOHC 2-valve V6 design, NOT a HEMI engine. The Chrysler HEMI family (5.7L HEMI, 6.1L HEMI, 6.4L HEMI / 392, 6.2L Hellcat Supercharged HEMI) uses hemispherical combustion chambers with pushrod actuated valvetrain and is a completely different engine architecture. The 3.7L PowerTech V6 and the HEMI family are distinct engine families that served different roles in the Chrysler lineup. The 3.7L PowerTech was the smaller V6 for mid-size applications; the HEMI was the premium high-performance V8 for performance applications.
Multiple transmission options across applications. The 3.7L PowerTech was paired with different transmissions depending on the application. In Jeep Liberty KJ (2002-2005), the 3.7L PowerTech was paired with the Jeep NV3550 5-speed manual transmission (per our listing). In Jeep Liberty KK (2008-2012), various automatic transmissions including the 42RLE and 545RFE 5-speed automatic. In Jeep Wrangler JK V6 (2007-2011), the NSG370 6-speed manual (per our listing) or 42RLE 4-speed automatic. In Dodge Dakota and Nitro, various transmissions including 42RLE, 545RFE, and manual options. The 3.7L PowerTech bellhousing pattern is specific to the V6 (different from the 4.7L V8 pattern), so transmission cross-application requires careful bellhousing verification.
No. There is no core return required.
2 reviews for Jeep Liberty 3.7L Engine for Sale | OEM Used Chrysler PowerTech 3.7 Liter V6
Related products
Hyacinth M. –
Bought for my Jeep Liberty 3.7L Engine build. Honest description, ready to install.
Quintessa A. –
Bolted onto the Jeep Liberty 3.7L Engine clean. Recommend.