WELLS 52663KMXH Water Temperature Sensor

( Brand: Wells ), ( Manufacturer Part Number: 52663KMXH ), ( Part Type: Sensor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Engine Coolant Temperature Sensor For Mating Connector Use . ), ( Years: 2014 2018 2016 2015 2017 2020 2021 2022 2023 ), ( Application: Ram 1500 Water Temperature Sensor ), ( Product Name 2: Engine Coolant Temperature Sensor ), ( Cs-sku: 400 )

Review WELLS Water Temperature Sensor fits RAM 1500 2014–2023

The **Wells 52663KMXH** is a high-performance, direct-replacement water temperature sensor designed specifically for **2014-2018 and 2020-2023 Ram 1500 trucks**, ensuring seamless integration with your vehicle s engine management system. Engineered with precision, this sensor features a **robust stainless steel housing** and a **highly accurate thermistor element**, allowing it to provide real-time, reliable temperature readings critical for optimal engine performance, fuel efficiency, and emissions compliance. The **KMXH variant** is particularly suited for **EcoDiesel and Cummins engines**, delivering consistent data to the powertrain control module (PCM) to maintain proper cooling system function and prevent overheating. Its **OEM-level compatibility** ensures a snug fit with the factory mounting bracket, eliminating the need for additional adapters or modifications, while its **durable construction** resists corrosion and mechanical stress, even in demanding off-road or heavy-duty applications. Whether you re tackling rugged terrain or hauling heavy loads, this sensor guarantees dependable operation, helping your Ram 1500 maintain peak efficiency and longevity. Backed by Wells reputation for quality and backed by a **warranty against defects**, this part is an essential upgrade for any owner seeking to restore factory performance or enhance diagnostic accuracy.

### **Pros and Cons of Buying a Used 2016 Ram 1500 with a 52663KMXH Water Temperature Sensor**

#### **Overview of the Part (52663KMXH)**

The **52663KMXH** is a **water temperature sensor** for the **2016 Ram 1500**, part of the **EFI (Electronic Fuel Injection) system**. It monitors engine coolant temperature and sends data to the **PCM (Powertrain Control Module)** to adjust fuel delivery, ignition timing, and other critical functions. A faulty sensor can lead to **poor fuel economy, rough idling, overheating, or check engine lights (CEL)**.

---

### **Pros of Buying This Part**

1. **Direct Fitment for 2016 Ram 1500**

- The **52663KMXH** is a **factory-replacement part**, meaning it should install without modifications and match the original specifications.

- Compatible with **EFI-equipped 2.7L V6, 3.6L V6, and 3.0L EcoDiesel** engines (depending on trim).

2. **High-Quality OEM Replacement**

- Manufactured by **Wells**, a reputable aftermarket supplier known for **durable, reliable sensors** that meet or exceed OEM standards.

- Often **more affordable than a brand-new OEM sensor** while maintaining similar performance.

3. **Prevents Engine Damage**

- A failing water temperature sensor can cause **incorrect fuel mixture, overheating, or catalytic converter damage** if left unaddressed.

- Replacing it **prevents costly repairs** down the line.

4. **Easy Installation**

- Typically a **simple bolt-on replacement** (requires draining some coolant, but no major modifications).

- Most mechanics or DIYers can install it in **under an hour**.

5. **Warranty Coverage**

- Wells parts often come with a **limited warranty (typically 1-2 years)**, providing peace of mind against early failure.

6. **Improves Drivability**

- A functioning sensor ensures **smooth cold starts, proper idle, and optimal fuel efficiency**.

- Eliminates **erratic engine behavior** caused by a faulty sensor.

7. **Commonly Available**

- Since it s a **popular Ram 1500 part**, it s **easily found** at auto parts stores (AutoZone, O Reilly, RockAuto) or online (Amazon, eBay, RockAuto).

---

### **Cons of Buying This Part**

1. **Potential Counterfeit or Low-Quality Units**

- Some sellers (especially on eBay or Amazon) may offer **fake or mismatched sensors**, leading to **early failure or incorrect fitment**.

- **Solution:** Buy from **reputable suppliers** (RockAuto, AutoZone, or verified eBay sellers) and check **part numbers carefully**.

2. **Coolant Drain Required**

- **Waste disposal** (coolant is hazardous).

- **Refilling with fresh coolant** (may require flushing if the system is old).

- If the vehicle has **never had a flush**, sediment buildup could affect sensor performance.

3. **Possible Secondary Issues**

- If the **sensor was failing for a while**, other components (like the **coolant thermostat, radiator, or hoses**) may also be worn.

- **Solution:** Inspect these parts while the engine is open.

4. **Price Variability**

- Prices can range from **$30 $80**, depending on the seller.

- **Cheaper options may be lower quality**, while **newer or bulk packs** can be pricier.

- **Average cost:** $50 $60 for a genuine Wells sensor.

5. **Diagnostic Confusion**

- A **check engine light (CEL)** with **P0115, P0116, P0117, or P0118 codes** confirms a water temp sensor issue, but **other sensors (like the intake air temp sensor)** can cause similar symptoms.

- **Solution:** Always **scan for codes** and **test the sensor s resistance** before replacing.

6. **Potential for Installation Errors**

- If the sensor is **over-tightened or under-tightened**, it can **strip threads** or **leak coolant**.

- **Solution:** Follow **factory torque specs** (usually **20 25 ft-lbs**).

7. **Limited Lifespan (Like All Sensors)**

- While durable, **sensors can fail over time** due to **corrosion, coolant contamination, or electrical issues**.

- **Average lifespan:** **5 10 years** (or **80,000 150,000 miles**), depending on driving conditions.

---

### **Key Considerations Before Purchase**

1. **Verify the Correct Part Number**

- Ensure the **52663KMXH matches your exact engine and year** (some Ram 1500 models have slight variations).

- Check for **alternative part numbers** (e.g., **Denso, Bosch, or OEM equivalents**).

2. **Check for Accompanying Symptoms**

- **Rough idling, stalling, poor fuel economy, or overheating** are signs the sensor is failing.

- If the **coolant temp gauge reads erratically**, the sensor is likely bad.

3. **Test the Sensor Before Buying (If Possible)**

- A **multimeter** can check **resistance values** (should be ** 1,100 2,200 ohms at room temp, dropping to 100 300 ohms at 194 F/90 C**).

- If resistance is **infinite (open circuit) or zero (short)**, the sensor is bad.

4. **Consider a Sensor Test Kit**

- Some mechanics use **sensor testers** to confirm functionality before replacement.

5. **Look for Bundled Deals**

- Some sellers offer **sensor gasket coolant** packages for a slight discount.

---

### **Final Recommendation**

You have **confirmed codes (P0115 P0118)** or **symptoms** of a bad sensor.

You re purchasing from a **trusted supplier** (RockAuto, AutoZone, or a verified eBay/Amazon seller).

You re prepared for a **simple installation** (coolant drain, sensor replacement, refill).

You want a **reliable, OEM-quality replacement** at a **lower cost than new**.

The seller is **unverified** or the part is **cheaply priced** (risk of counterfeit).

You **haven t confirmed the exact engine/year compatibility**.

You **ignore other potential issues** (coolant system, thermostat, hoses).

You **don t have basic tools** (socket set, multimeter, coolant).

---

### **Best Approach**

1. **Confirm the issue** with a **scan tool** (look for **P0115 P0118 codes**).

2. **Test the sensor s resistance** if possible.

3. **Buy from a reputable source** (RockAuto, AutoZone, or a well-reviewed online seller).

4. **Replace the sensor** and **flush the coolant system** if needed.

5. **Monitor for improvements** if symptoms persist, check for **other related issues**.

**Verdict:** The **Wells 52663KMXH is a solid choice** for replacing a faulty water temperature sensor in a **2016 Ram 1500**, provided you take precautions to ensure **authenticity and proper installation**. It s a **cost-effective fix** that prevents **bigger engine problems** if done correctly.

Details:

Parts Geek - For 2014 - 2018, 2020 2023 Ram 1500 Water Temperature Sensor Wells 52663KMXH 2016: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Notes: Engine Coolant Mating Connector Use 1P3388 Wiring Harness Included: No 12 Month Warranty Vehicle: Engine: 15003.0L V6.

part #: 52663kmxh price

• $19.07

specifications ocoosys:

• for models: 1500, Ram
• for years: 2014-2023
• brand: Wells
• mpn: 52663kmxh
• part type: Sensor
• manufacturer warranty: 12 Month Warranty
• notes: Engine Coolant Temperature Sensor For Mating Connector Use .
• years: 2014 2018 2016 2015 2017 2020 2021 2022 2023
• application: Ram 1500 Water Temperature Sensor
• product name 2: Engine Coolant Temperature Sensor
• cs-sku: 400

offer ocoosys:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1
• started: April 15, 2026

seller ocoosys:

• city: Saint Paul, Minnesota
• # reviews: 328352
• rating: 98.8%

shipping ocoosys:

• type: Fixed
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• cost: $0.00
• transit: 2-5 Days

general ocoosys:

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

payments ocoosys:

• wallet: Paypal
• other
• credit card: Discover

returns ocoosys:

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

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