WALKER PRODUCTS 211-2042 Engine Coolant Temperature Sensor 724620231162

( Brand: Walker Products ), ( Manufacturer Part Number: 211-2042 ), ( Part Type: Engine Sensor ), ( Product Type: Engine Cooling ), ( UPC: 724620231162 ), ( California Prop 65 Warning: Cancer And Reproductive Harm ), ( Universal Fitment: Direct Replacement ), ( Partslink Number: 392202m425 ), ( Compatible Model S : Sonata, Elantra, Santa Fe, Accent, Venue ), ( Product Subtype: Cooling System Switches, Sensors Relays ), ( Product Details: Engine Coolant Temperature Sensor ), ( Department: Replacement )

Review WALKER PRODUCTS Hyundai Engine Coolant Temperature Sensor fits SONATA 2020–2023

The **Hyundai Sonata (2020 2023) Engine Coolant Temperature Sensor (ECTS) Part #211-2042** is a precision-engineered, high-performance sensor designed to monitor the temperature of the engine coolant in your vehicle s cooling system with exceptional accuracy and reliability. This critical component plays a pivotal role in maintaining optimal engine performance, fuel efficiency, and emissions compliance by continuously feeding real-time temperature data to the Engine Control Module (ECM). Positioned strategically within the engine bay, typically near the thermostat housing or intake manifold, the sensor utilizes a thermistor a temperature-sensitive resistor that adjusts its electrical resistance in response to coolant temperature fluctuations. As the coolant heats up or cools down, the sensor s resistance changes, allowing the ECM to precisely calibrate fuel injection, ignition timing, and other engine parameters for peak operation. Crafted from durable materials, including a robust metal housing and a corrosion-resistant probe, this sensor is built to withstand the harsh conditions of Hyundai s advanced engine systems, ensuring long-term durability and resistance to wear from exposure to coolant, heat, and vibration. Whether your Sonata is equipped with the 2.5L Gamma II or the 2.4L Nu engine, this sensor is engineered to meet Hyundai s stringent quality standards, providing consistent and reliable performance to prevent overheating, improve cold-start efficiency, and reduce unnecessary strain on the engine. Ideal for both original equipment replacement and aftermarket upgrades, this sensor is a straightforward yet essential part for maintaining your vehicle s health, ensuring smooth operation across all driving conditions while minimizing the risk of costly engine damage.

The **Walker 211-2042** is a replacement **Engine Coolant Temperature (ECT) Sensor** designed for Hyundai Sonata models from **2020 to 2023** with the **Gamma II 2.4L (GDI) engine**. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Walker 211-2042 ECT Sensor**

1. **Direct OEM Replacement** The sensor is designed to match the original Hyundai specification, ensuring compatibility with the vehicle s engine control module (ECM). This reduces the risk of calibration or performance issues that can occur with non-OEM parts.

2. **High-Quality Materials** Walker is a reputable aftermarket brand known for producing sensors with durable construction, including corrosion-resistant coatings and precise temperature sensing elements. This helps prevent premature failure due to wear or environmental factors.

3. **Easy Installation** The sensor is straightforward to install, requiring only basic tools (socket wrench, anti-seize compound, and a torque wrench for proper tightening). Walker provides clear instructions, and the part fits standard Hyundai ECT sensor housings without modification.

4. **Cost-Effective Alternative to OEM** While not an exact OEM part, the Walker sensor offers significant cost savings compared to purchasing a genuine Hyundai replacement. Prices are typically **30 50% lower** than OEM, making it a practical choice for budget-conscious buyers.

5. **Widely Available** The sensor is stocked by most auto parts retailers (AutoZone, O Reilly, Amazon, RockAuto) and is often shipped quickly, reducing downtime for repairs.

6. **Positive User Feedback** Many Hyundai Sonata owners report reliable performance with the Walker sensor, with few complaints about accuracy or longevity. Reviews often highlight its ability to resolve check engine lights (CEL) related to ECT sensor codes (e.g., P0115, P0116, P0117, P0118).

7. **Compatibility Beyond Hyundai** The sensor may also fit other Kia and Genesis models with identical ECT sensor specifications, expanding its usefulness if you own or service multiple brands.

8. **Warranty Coverage** Walker offers a **limited warranty** (typically 1 2 years), providing some recourse if the sensor fails prematurely due to defects in materials or workmanship.

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### **Cons of the Walker 211-2042 ECT Sensor**

1. **Not a True OEM Part** While functionally identical, the Walker sensor is not manufactured by Hyundai. Some purists or dealerships may prefer genuine OEM parts for warranty or long-term reliability concerns, though this is rarely an issue for the ECT sensor itself.

2. **Potential for Counterfeit Parts** Purchasing from untrusted sellers (e.g., third-party Amazon vendors or unlicensed online marketplaces) could result in receiving a **fake or low-quality copy**. Always buy from authorized dealers or reputable retailers to avoid this risk.

3. **Mixed Reviews on Longevity** While most users report no issues, a small percentage of owners experience failure within **1 2 years**, particularly in harsh conditions (extreme temperatures, road salt, or poor maintenance). This is not unique to Walker but is a general risk with aftermarket sensors.

4. **Requires Proper Installation** Improper installation (e.g., overtightening, insufficient anti-seize compound, or cross-threading) can damage the sensor or the engine block. Following the manufacturer s instructions is critical to avoid voiding the warranty or causing leaks.

5. **Limited Customization** Unlike some high-end aftermarket sensors, the Walker 211-2042 does not offer adjustable calibration or advanced features. It is a **plug-and-play** solution designed for standard operation.

6. **No Direct Support from Hyundai** If issues arise, Walker s customer service may not have the same level of technical support as Hyundai s dealership network. However, this is rarely a problem for a simple sensor replacement.

7. **Potential for Incompatibility with Mods** If the vehicle has been modified (e.g., turbocharged, forced induction, or aftermarket ECU tuning), the ECT sensor s calibration might not perfectly match the engine s new operating parameters. In such cases, a **high-quality OEM or upgraded sensor** may be preferable.

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### **Conclusion**

The **Walker 211-2042 ECT Sensor** is a **strong, cost-effective choice** for Hyundai Sonata owners (2020 2023) needing a replacement sensor. It offers **OEM-level performance** at a fraction of the cost, with minimal risk of installation or compatibility issues. The brand s reputation for quality and the widespread availability make it a **reliable aftermarket option** for most drivers.

However, if you prioritize **absolute certainty** (e.g., for warranty purposes or extreme driving conditions) or if your vehicle has significant modifications, a **genuine Hyundai OEM sensor** may be worth the higher cost. For the average driver, the Walker sensor provides an **excellent balance of affordability, quality, and ease of use**.

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### **Recommendation**

- You need a **budget-friendly, high-quality replacement** for a standard Hyundai Sonata.

- You want to **avoid check engine lights** caused by faulty ECT sensors.

- You re comfortable installing it yourself or have a mechanic perform the job.

- You re purchasing from a **trusted retailer** (e.g., AutoZone, Amazon Prime, or RockAuto) to ensure authenticity.

- You re concerned about **long-term reliability** in extreme conditions.

- Your vehicle has **aftermarket modifications** that may require precise sensor calibration.

- You re working under a **dealership warranty** that requires OEM parts.

For most users, the **Walker 211-2042 is the best value** and will resolve ECT-related issues effectively. Always **flush the cooling system** and **check for leaks** after installation to ensure optimal performance.

Details:

Replaces Original OE Part #: 392202M425. This product is made of high-quality materials to serve you for years come. Expertly made from premium materials. Features: High quality at an affordable price.

Engine Coolant Temperature Sensor 211-2042 by Walker Products.

part #: 2112042 prices

• $25.74-$47.60

specifications ocoosys:

• for models: Sonata
• for makes: Hyundai
• for years: 2020-2023
• brand: Walker Products
• mpn: 211-2042
• part type: Engine Sensor
• product type: Engine Cooling
• upc: 724620231162
• california prop 65 warning: Cancer And Reproductive Harm
• universal fitment: Direct Replacement
• partslink number: 392202m425
• compatible model s : Sonata, Elantra, Santa Fe, Accent, Venue
• product subtype: Cooling System Switches, Sensors Relays
• product details: Engine Coolant Temperature Sensor
• department: Replacement

seller ocoosys:

• # reviews: 363285
• city: Carson, California
• rating: 98.7%

general ocoosys:

• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
• condition: New

payments ocoosys:

• other
• wallet: Apple-pay
• credit card: Visa

returns ocoosys:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer ocoosys:

• started: February 24, 2026
• quantity: 2
• availability: In Stock
• options: Ship-to-home
• sold: 0

shipping ocoosys:

• cost: $19.57
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• type: Calculated
• class: Standard
• transit: 3-7 Days

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