The Nissan Quest Rack and Pinion Boot is a rubber bellows that seals each end of the steering rack. It protects the internal rack and pinion gears from dirt and debris as well as loss of fluid. The Rack and Pinion Boot is situated over the tie-rod connection at a spot where the rack gear exits the metal tube. It flexes when the rack moves from side to side as the steering wheel turns. It does this while creating a continuous barrier that does not interfere with the motion. The Rack and Pinion Boot in the Nissan steering rack assembly maintains hydraulic pressure and facilitates smooth power assist by preventing contamination from entering the gears, piston, and O-ring seals. When the Rack and Pinion Boot cracks or tears, foreign particles can penetrate the component and destroy the seal. Subsequently, it would see leaks occur and accelerate wear at the inner tie-rod joint. This would cause stiff steering, play at the wheel center, and ultimately damage to the rack. A sound Rack and Pinion Boot is therefore essential equipment on any Nissan Quest vehicle that ensures dependable steering response on every Quest while helping to avoid costly rack replacement on the Nissan Quest.
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