These are POLY motor mounts that fit 07-14 GMT900 GM LS-equipped trucks including Silverado, Sierra, Tahoe, Yukon, Yukon XL, Suburban, Denali, and Escalade. They are a direct bolt up using factory hardware. These use a polyurathane bushing with a 9/16″ bolt to allow the engine and frame to rotate relative to each other reducing vibration and loading. These are laser cut 3/16″ steel fully MIG welded. All brackets will ship raw ready for your paint or painted for a small fee. They match factory measurements so the engine remains in the same location as stock.
Do not overtighten the main center bolt. It uses a locking nylon nut and will not back off. Overtightening can compress the mount which may result in an increase in vibration. Snug is fine.