SMD MAP Manifold Absolute Boost Pressure MAP Sensor For 1999-2001 Jeep Grand Cherokee 4.0L 4.7L 56041018 89053420 SMD MAP Manifold Absolute Boost Pressure MAP Sensor For 1999-2001 Jeep Grand Cherokee 4.0L 4.7L 56041018 89053420. Sale price : $8.50 Category : Automobiles, Parts & Accessories