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The SuperPro Nissan D40 upper coil seat kit replaces worn coil seat components with engineered polyurethane parts built for durability and consistent spring support. These seat bushings maintain proper spring location and help reduce noise while improving ride stability. Intended as an upgrade or replacement, the kit restores consistent suspension geometry and long-term reliability compared with degraded factory components.
SuperPro Nissan D40 Upper Coil Seat Kit
