Details

• Brand:

  

• SKU:

  23731-6N21A

• Other Names:

  Engine Camshaft Position Sensor, Engine Crankshaft Position Sensor, Camshaft Sensor, Camshaft Position Sensor, Crankshaft Position Sensor, Crankshaft Sensor

• Description:

  Crankshaft Position Sensor – Magnet (23731-6N21A) – OEM Replacement Part for Nissan

  Restore proper engine timing and reliable ignition with the Crankshaft Position Sensor – Magnet (23731-6N21A). This genuine Nissan component detects the position and rotational speed of your crankshaft, sending crucial data to your vehicle’s ECM for precise ignition and fuel injection timing.

  Specifications:

  • Part Type: Crankshaft Position Sensor – Magnet

  • Function: Measures crankshaft position and rotation speed

  • Construction: Sealed, durable sensor with factory-style electrical connector

  • Usage: Provides critical signals for ignition timing and fuel management

  Compatible Nissan Models:

  2001–2006 Nissan Altima – Trims: S, SL, SE | Engine: 2.5L 4-Cylinder (L31US)
  2004–2025 Nissan Frontier – Trims: XE, SE, SV, PRO-4X | Engine: Various (D40US)
  2000–2006 Nissan Sentra – Trims: XE, GXE, SE-R | Engine: 1.8L & 2.5L 4-Cylinder (B15UUS)

  May fit other models and years. Please check VIN for compatibility.
  Check compatibility here by entering your VIN before ordering.

  Key Features:

  • Genuine Nissan crankshaft sensor for factory-accurate readings

  • Supports precise ignition timing and smooth engine performance

  • Sealed design resists heat, oil, and debris for long-term reliability

  • Plug-and-play design for a direct, hassle-free replacement

  • Essential for correcting engine misfires, poor acceleration, and stalling

  • Designed to meet Nissan’s factory durability and performance standards

  Failing to Replace a Faulty Crankshaft Sensor Can Lead To:

  • Engine stalling or failure to start

  • Check Engine Light (often with code P0335)

  • Hesitation or sluggish acceleration

  • Rough idling or engine vibration

  • Increased fuel consumption due to poor ignition timing

  Related Components to Inspect or Replace:

  • Camshaft Position Sensor: Works with the crank sensor for timing control

  • ECM Wiring Connectors: Check for corrosion or damaged pins

  • Ignition Coils and Spark Plugs: Replace if misfire symptoms persist

  • Timing Chain or Belt: Inspect if engine timing issues continue

  Order with Confidence:

  Order the Crankshaft Position Sensor – Magnet (23731-6N21A) today to restore ignition precision and engine performance for your Altima, Frontier, or Sentra. Shop genuine Nissan parts at Chapman Nissan for factory-spec fitment and durability.

  Restore Your Nissan with Genuine Accessories!

  Looking to restore your Nissan? We offer factory-direct Nissan accessories at competitive prices, including all-weather floor mats, pet accessories, roof carriers, and wheel locks. Whether you're restoring protection, style, or utility, shop genuine Nissan parts and accessories all in one place!

  Altima. 2.5l. 2.5L, magnet. Sentra. 2.5l. Frontier. 2.5l.

  This item is non-returnable.

• Condition: New
• Replaces:

  237316n202, 237316n205, 237316n206, 237316n20a, 237316n20b, 237316n20c, 237316n20d, 237318j000, 237318j005, 237318j006

WARNING: California Proposition 65

×

California Proposition 65

WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov