NEW Water Pump. Produce 20% more gallons per minute at 2000 RPM and 100% more gallons per minute at 900 RPM than any other pump on the market today, including expensive racing pumps. FlowKooler pumps also generate 22% more water pressure inside the engine block than other water pumps. This increased pressure helps suppress engine hot spots, steam pockets, and pinging. In addition to higher output, the FlowKooler water pump is up to 32% more efficient than other pumps, meaning less horse power is required to turn it. The result is overall lower operating temperature by as much as 30 degrees when cruising at low speeds. All pumps are brand new (not rebuilt) and are covered by a lifetime . Estimated Time to Install*** 1-2 Hours Intended to Fit: 1987-1990 Jeep Wrangler (YJ) **Comes with the Following** Water Pump -br>>Explore our site! We have over 20,000 Quality Jeep parts and accessories for sale!