3.0L & 3.6L 6-Cylinder Engine Parts for Jeep Wrangler JK

Why the Pentastar and CRD Engines in the Jeep Wrangler JK Need Targeted Care.

The 3.6-liter Pentastar V6 replaced the older 3.8-liter V6 in the Jeep Wrangler JK in 2012, joined from 2014 by the optional 3.0-liter V6 CRD diesel for the European market. Both engines use an elaborate dual timing chain setup with a primary and secondary chain instead of a belt – as a result, tensioners, guide rails and tensioner arms wear over the miles and can cause timing errors if neglected. Cylinder head gaskets can start losing oil or coolant after many operating hours under thermal cycling, crankshaft bearings and seals wear down, and motor mounts crack under the V6's high torque. The aluminum oil pan on these engines is prone to fine cracks at the sealing surfaces. Anyone wanting to keep a Pentastar or CRD diesel reliable long-term should keep these wear parts in view.

• Cylinder Head & Valve Cover: The cylinder head gasket right and the valve cover gasket left seal the upper engine area, complemented by the complete upper engine gasket set.
• Timing Chain & Tensioners: The primary timing chain for the crankshaft and intermediate shaft along with the timing cover gasket set cover a complete timing chain job, plus tensioner arms, chain guides and gears for the crankshaft and intermediate shaft.
• Crankshaft & Bearings: The main bearing set and the crankshaft harmonic balancer keep the engine running smoothly, along with the front oil seal and thrust bearing set.
• Motor Mounts & Sealant: The motor mount right and the motor mount left absorb vibration and torque, complemented by RTV silicone sealant for installation.
• Oil Circuit & Filters: The oil pan with sealant and the oil filter keep the oil circuit clean, plus the oil filter housing cap, oil filler cap and oil drain plug.
• Service, Sensors & Hardware: The tune-up kit and the filter master kit cover routine maintenance, plus the camshaft position sensor seal, exhaust manifold gasket and crankcase vent PCV valve.

American Engine Expertise with a European Addition.

The lineup centers on Crown Automotive – American-made and, with over 30 parts spanning the timing chain to the oil pan, the clear main supplier for this engine assembly. Oil filters and an alternative oil pan come from European manufacturers NTY and Ridex, the oil filler cap from Gates, and the oil drain plug from Dorman – both American brands.

Your Partner for the Wrangler JK Pentastar and CRD Engine.

Whether it's a timing chain replacement, a cylinder head gasket, or a motor mount swap, we're happy to advise on torque specs, correct timing settings and the specifics of the Pentastar V6 and CRD diesel, including compatibility questions for the related Grand Cherokee WK2. Your order ships from our warehouse as fast as possible.