This replacement shock absorber, OEM #631237, is designed for heavy-duty applications and provides long-lasting, dependable performance even in the worst temperature conditions. The nitrogen gas charged shock minimizes hydraulic fluid aeration for a more responsive performance, while the specially designed concave bushings keep the bushing in place and prevent bushing walk out. Precision robotic welded eye rings provide superior durability, and the reinforced seal and mirror-finished hard chrome OE style piston rod offer superior corrosion resistance and leak-free sealing. This shock absorber is sold individually and fits OEM #631237, Monroe Crossover Part Number: 74024, and Gabriel Crossover Part Number: 85308.