This is the Super Duty version of our sturdy front differential bushing set including ONE HydroPoly bushing with hardware for the Pinion mount. Permanently lubricated, except for the Pinion mount, this is designed for the longest service life, extreme driving environments like desert racing, drag racing, rock crawling, and extreme, enthusiastic driving conditions. It will have much longer service life under normal driving conditions yet still deliver day to day driver comfort and control.
The transverse insert mount comes with permanent lubrication as well as a zerk fitting that will need to be drilled for after being mounted into its assembly. It is designed to be internally greased in order to flush out its internals from dirt, saltwater or other abrasive contaminants found in harsh environments.
The Hydropoly bushing, specially designed for the PINION mount, is designed to deliver very long service life, withstand the most abuse and absorb most drivetrain NVH. Once mounted, it is designed to seal itself, so a healthy dose of synthetic grease will be required to lubricate it. It will maintain most of its internal synthetic grease but occasional servicing will be required. It has the hardware to allow for easy lubrication while mounted. It is recommended for the Zerk fitting to face towards the front end of the Jeep for easy lubrication.
http://www.fourwheeler.com/how-to/transmission-drivetrain/1406-2005-jeep-grand-cherokee-front-differential-mount-fix/
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