Is your 2001-2006 Hyundai Santa Fe with the 2.4L 4-cylinder engine acting up? Stalling, hard starting, or check engine light on? It might be the crankshaft position sensor. This Dcmr part is a direct replacement for the OEM number 3931038070 (also crosses to SU6230, 5S1923, PC536 – double-check your old part!). This sensor is crucial; it tells the engine computer the position and speed of the crankshaft so everything fires at the right time. Installing a new one can solve a bunch of drivability issues. This one comes with a 12-month warranty and a hassle-free return policy, so you can buy with confidence. PLEASE, before you click order, verify your vehicle year, engine, and that your old sensor's number matches. Fitment is critical for these electronic parts!