JP Performance 5629 Billet Roller Timing Chain Set for AMC 4.0L 4.2L Inline-6

The JP Performance 5629 is a precision-engineered billet roller timing chain set designed for AMC inline-6 cylinder engines, including the popular 4.0L and 4.2L configurations found in Jeep Cherokee, Wrangler, and other AMC-powered vehicles. This complete timing set is machined from billet steel and turned for greater accuracy on CNC machinery, ensuring precise timing control for both stock replacement and performance applications.

Key Features:

• Induction-hardened crank sprocket with multiple keyways, index marked for easier timing adjustments
• Balanced camshaft sprocket for smooth operation
• True double-roller timing chain for enhanced durability and reduced stretch
• CNC-machined from billet steel for superior accuracy and strength
• Keyway adjustable design allows for precise cam timing adjustments

The AMC 4.0L inline-6 is regarded as one of the best off-road engines ever produced, known for exceptional reliability and longevity. Maintaining proper timing chain tension is critical to preserving the legendary durability of these engines. JP Performance recommends using a degree wheel when installing any new timing chain or gear set to properly dial-in the camshaft for optimal performance.

This complete timing set includes everything needed for a professional installation on AMC inline-6 engines. The precision-machined components ensure accurate valve timing, improved performance, and extended engine life compared to stock timing chains.