Hall Effect Crankshaft Position Sensor - Direct OEM Replacement High-Temperature Resistant for Hyundai Elantra Sonata Santa Fe 2.0L 2.4L GDI

The Crankshaft Position Sensor (CKP Sensor) with OEM number 39350-45700 is a verified direct-fit replacement for a wide range of Hyundai vehicles equipped with gasoline engines, including 2.0L, 2.4L GDI (Theta II) and 1.8L, 2.0L MPI (Nu) engines. It is commonly found in models such as Hyundai Elantra (MD/UD), Sonata (YF/LF), Santa Fe (DM), Tucson (LM), Kia Optima, Sportage and other Hyundai-Kia applications.

The CKP sensor is a critical engine management component. It monitors the rotational speed and position of the crankshaft, sending this signal to the Engine Control Unit (ECU). The ECU uses this data to determine ignition timing, fuel injection timing, and detect engine misfires. A failing crankshaft position sensor can cause intermittent stalling, hard starting (crank no start), rough idle, lack of power, and illumination of the Check Engine Light (CEL) with codes such as P0335, P0336, P0338, or P0339.

This OE-spec sensor is built with a high-temperature resistant thermoplastic housing, a precision Hall-effect or inductive magnetic sensing element, and includes the correct mounting bolt and O-ring seal (where applicable), ensuring reliable signal output and trouble-free installation.

• Real Shop Test Data: Output signal: Digital square wave (Hall effect) | Frequency range: 0 to 10,000 Hz corresponding to crankshaft speed up to 8,000 rpm | Air gap (sensing distance): 0.5–1.5 mm — tested on rotating trigger wheel with 60-2 tooth pattern typical of Hyundai engines
• Proven Durability: Rated service life: 150,000+ km under normal driving conditions — based on fleet tracking of 35+ Hyundai Elantra and Sonata vehicles | Operating temperature: –40°C to +150°C continuous (engine mounted, near crankshaft pulley or flywheel)
• Installation Success Rate: 99% direct bolt-on fitment for Hyundai Theta II and Nu engines — no modifications required (verified across 250+ repair orders and DIY installations)
• OEM Cross-Reference Verified: Supersedes / replaces OEM: 39350-45700, 39350-45710, 39350-45720, 39350-45730, 39180-2G000 (cross-check for specific model years)

• Theta II (2.0L GDI, 2.4L GDI) — most common for 39350-45700
• Nu (1.8L MPI, 2.0L MPI) — some variants
• Gamma (1.6L GDI — verify with VIN)

• Diagnose correctly: Before replacing the sensor, verify the DTC (e.g., P0335). Use a scan tool to check crankshaft signal while cranking.
• Inspect the trigger wheel (reluctor ring) for damaged, missing, or bent teeth. A damaged trigger wheel will cause recurring sensor failure codes.
• Check the wiring harness for chafing, corrosion, or loose connector pins.
• Clean the sensor mounting bore and surrounding area.

The crankshaft position sensor is typically located:

• Near the crankshaft pulley (front of engine) — mounted on the timing cover or oil pan, reading the crank pulley trigger wheel.
• Near the transmission bellhousing (rear of engine) — reading the flywheel/flexplate trigger wheel.

Typical installation procedure (front-mounted sensor – Theta II common):

1. Disconnect the battery negative terminal.
2. Locate the CKP sensor — follow the wiring from the engine harness near the crank pulley.
3. Disconnect the electrical connector (press tab and pull).
4. Remove the mounting bolt (usually 10mm or 12mm hex).
5. Gently pull the old sensor out — be careful not to damage the O-ring or bore.
6. Compare new sensor with the old one — ensure connector shape, cable length, and mounting hole position match.
7. Lubricate the new O-ring with a drop of clean engine oil.
8. Insert the new sensor fully by hand until seated.
9. Install the mounting bolt and torque to 8–10 Nm (do not overtighten — the housing is plastic).
10. Reconnect the electrical connector (should click).
11. Reconnect battery, start engine, and verify:
    • No Check Engine Light.
    • Smooth idle and acceleration.
    • Scan tool shows crankshaft RPM when engine is running.

• Still cranks but no start: Verify the sensor is fully seated and air gap is correct. Check for 5V reference voltage at the connector (key on, engine off).
• Intermittent stalling returns: Inspect the trigger wheel for damage. Use an oscilloscope to check signal integrity while wiggling the harness.
• P0336 (Crankshaft Position Sensor Range/Performance): Possible incorrect air gap or damaged trigger wheel.

• The CKP sensor is not a routine maintenance item. Replace only when faulty.
• If the timing belt/chain or crankshaft seal is replaced, consider replacing the CKP sensor proactively if the original has high mileage (>150,000 km).

• Individually sealed in anti-static bag with protective caps on connector pins
• Packed in custom foam insert inside a branded or plain carton
• Mounting bolt and O-ring included (pre-installed or in separate bag)
• Bulk wholesale: 50 sensors per master carton with dividers
• Suitable for: Hyundai/Kia specialist repair shops, online auto parts retailers, warehouse distributors

Shipping dimensions: Approx. 15*10*5 cm, weight ~0.1 kg — economical worldwide shipping.