Upgrade 67605 Valve Spring Compressor Tool Higher Nut Compatible with 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LS3 LS6 Chevy LSX Camaro, Corvette, Trans am, GTO, G8, CTS V, GM Trucks, w/T Mark& Storage Box

We have upgraded the nuts and made them higher to enhance stability. Bolts and nuts Kit built from 3/8" Steel and Precision CNC Machined for a great fit and Durability. Performance levels are 10.9, 10.9 and 12.9, much better than the other 8.8. Upgrade manufacturing, T - shaped parts are marked with "TOP" for ease of use. This Valve Spring Compressor Kit is a great helper to remove old stock valve springs and install new valve springs. New kits Come with a Storage Box for Portability. This tool kit is for 4.8, 5.3, 5.7, 6.0, and 6.2L LS Engines and is a must when it comes time to install a new set of valve springs! OE 67605, will be compatible with any LS engine for Firebird, Silverado, Camaro, GTO, Trans am, Corvette, CTSV, Sierra, Tahoe, Suburban, Pontiac G8 GT and more. Also compatible with Dodge Ram 318 360 5.2 5.9 Engine (but need to use your original bolts). Springs are not included in the product. Read the instructions included in the package first. Tips: Adding lubricant will work more perfectly. It is not recommended to buy cheaper alternatives, which will not last long. Any questions please let us know, Thanks!