Our ZZP Ecotec complete timing chain kit includes everything needed to service your timing chain system while including our upgraded components to ensure worry free reliability and increased performance. We include our ZZP upgraded timing chain guide that addresses the flaws of a "stock style" replacement timing chain guide, you can read more on the details here. We also include our higher strength ZZP shoulder bolt and the upgraded upper timing chain bolt to complete the system.  Includes:  ZZP Ecotec Timing Chain Guide Upgraded Upper Timing Chain Bolt ZZP Upgraded Lower Timing Chain Bolt GM Genuine Timing Chain Tensioner Upper Timing Chain Guide Cloyes Water Pump/Balance Shaft Chain & Guides Cloyes Engine Timing Chain & Rear Guide Cloyes Balance Shaft Chain Tensioner (2x) LSJ cam bolts If you have a VVT Ecotec such as the LE5/LE9/LAP or LNF/LDK/LHU you will need 2x of the LNF/LDK Camshaft Bolt to replace the LSJ style cam bolts included in the kit. Note: We do not include the Cloyes gears because we have found multiple issues with them over the years. Re-use all of the stock gears from your OE timing set, we have never found issue with them or seen wear over the thousands of Ecotec timing sets we've done.