<p>This crankshaft position sensor is designed as a replacement auto part for OE/OEM part number(s) 23731-EC00A, 23731-EC01A, 949979-1420. It is commonly used for Nissan. Before ordering, compare the OE number, connector shape, mounting points, and original part photo to confirm fitment.</p><h3>Features</h3><ul> <li> <strong>Product type:</strong> Crankshaft Position Sensor</li> <li> <strong>OE/OEM part number(s):</strong> 23731-EC00A, 23731-EC01A, 949979-1420</li> <li> <strong>Compatible vehicle brand:</strong> Nissan</li> <li> <strong>SKU:</strong> 23731-EC00A</li> </ul><h3>Fitment &amp; Compatibility</h3><ul> <li> <strong>Fitment summary:</strong> Vehicle Make: Nissan Part Type: Crankshaft Position Sensor OE/OEM Numbers: 23731-EC00A, 23731-EC01A, 949979-1420</li> <li> <strong>Key fitment note:</strong> Match the OE/OEM number first. Vehicle model names and production years can vary by market, trim, engine, and connector style.</li> <li> <strong>What to compare:</strong> Original part number, plug shape, pin count, mounting tabs, bracket position, side/location, and overall size.</li> </ul><h3>Before Purchase Checklist</h3><ul> <li>Confirm your original OE/OEM part number before purchase.</li> <li>Compare the connector shape, pin count, mounting points, and installation position with your original part.</li> <li>Check vehicle year, make, model, engine, trim, and left/right or front/rear position when applicable.</li> <li>If you are unsure, email your VIN, OE number, and original part photo to info@NexuParts.com for fitment help before ordering.</li> </ul><h3>Package Includes</h3><p>1 x Crankshaft Position Sensor. Product images show the actual style or compatible replacement style for reference.</p><h3>Important Note</h3><p>Professional installation is recommended. Electrical parts, sensors, switches, and modules that have been installed, modified, damaged, or show signs of use may not be eligible for return unless defective or incorrectly shipped.</p> <!-- NexuParts-product-faq-start --><section class="product-faq product-faq--fitment" data-faq-purpose="ai-search-fitment-conversion"><h3>Product FAQ</h3> <p><strong>Fitment summary:</strong> Crankshaft Position Sensor; OE/OEM 23731-EC00A, 23731-EC01A, 949979-1420; for Nissan. Please verify the OE/OEM number and original connector before ordering.</p> <div class="product-faq__item"> <h4>Will this Crankshaft Position Sensor fit my vehicle?</h4> <p>This Crankshaft Position Sensor is intended for vehicles that match OE/OEM part number(s) 23731-EC00A, 23731-EC01A, 949979-1420. Confirm the vehicle details and fitment notes: Nissan. Model names alone are not enough because connector style, year range, trim, engine, and installation position can vary.</p> </div> <div class="product-faq__item"> <h4>How do I confirm OE/OEM compatibility for 23731-EC00A, 23731-EC01A, 949979-1420?</h4> <p>Use the number printed on your original part first, then compare it with this listing's SKU, MPN, OE/OEM numbers, and product photos. OE number matching is usually more reliable than matching only by vehicle model name.</p> </div> <div class="product-faq__item"> <h4>What should I compare before ordering this Crankshaft Position Sensor?</h4> <p>Compare connector shape, pin count, sensor length, mounting points, thread or insert style, and installation location. If any detail differs from your original part, contact us before ordering or installation.</p> </div> <div class="product-faq__item"> <h4>What symptoms can a failing Crankshaft Position Sensor cause?</h4> <p>A failing or incorrect Crankshaft Position Sensor may cause no-start, random stalling, misfire, or crankshaft position signal faults. Symptoms alone do not confirm fitment, so verify the OE number and physical part details before purchase.</p> </div> <div class="product-faq__item"> <h4>Can I get fitment help before ordering?</h4> <p>Yes. Email your VIN, original OE/OEM part number, vehicle year/make/model/engine, product link, and clear photo