1991-1993, 1995 Jeep Wrangler 2.5L 4 Cyl. 1994 Jeep Wrangler S 2.5L 4 Cyl. 1991-1995 Jeep Wrangler 4.0L 6 Cyl. Enhanced Engine Performance: These sensors contribute to better engine performance by ensuring the engine receives the right amount of air, which is crucial for combustion efficiency, reduced engine knock, and increased horsepower.