1. Engine Cooling Components Deals
  2. sku: 21090190955258793
  3. FACET 45721KYZF

FACET 45721KYZF Water Temperature Sensor

fits model: Explorer. make: Ford. year: 1997–2001.

45721kyzf Facet For 1997-2001 Ford Explorer Water Temperature Sensor 1998 1999 2000

( Brand: Facet ), ( Manufacturer Part Number: 45721KYZF ), ( Part Type: Sensor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Engine Coolant Temperature Sensor Terminals ), ( Years: 1997 1998 1999 2000 2001 ), ( Application: Ford Explorer Water Temperature Sensor ), ( Product Name 2: Engine Coolant Temperature Sensor ), ( Cs-sku: 400 )

Review FACET Ford Water Temperature Sensor fits EXPLORER 1997–2001

The **Facet 45721KYZF** is a high-performance, direct-replacement water temperature sensor designed specifically for the **1997-2001 Ford Explorer** models, including the **1998, 1999, and 2000 trim years** featuring the **4.0L V6 engine**. Engineered with precision and built to exacting standards, this sensor is a critical component in maintaining optimal engine performance, fuel efficiency, and emissions compliance. Crafted from durable, corrosion-resistant materials, it ensures long-lasting reliability under the demanding conditions of daily driving, whether navigating city streets, highway commutes, or off-road adventures. The sensor operates by monitoring the engine coolant temperature and transmitting real-time data to the engine control module (ECM), allowing for precise adjustments to the fuel-air mixture, ignition timing, and cooling system operation. This direct feedback loop is essential for preventing overheating, reducing engine wear, and maximizing power output. The **Facet 45721KYZF** is a **plug-and-play** solution, requiring no modifications or additional tools for installation simply remove the faulty original sensor, apply a light coating of anti-seize compound to the threads if needed, and secure the new sensor in place. Its **OEM-quality construction** ensures compatibility with the Explorer s wiring harness and mounting bracket, guaranteeing a seamless fit and immediate functionality. Whether replacing a failed sensor due to age, corrosion, or electrical issues, this sensor restores the Explorer s engine management system to peak condition, helping to avoid costly diagnostic errors, check engine lights, or potential engine damage. Built to withstand the rigors of modern driving, the **Facet 45721KYZF** is a dependable choice for both professional mechanics and DIY enthusiasts seeking a reliable, long-term solution for their Ford Explorer.

### Pros and Cons of buying a Part: Facet 45721KYZF (Water Temperature Sensor for 1997-2001 Ford Explorer, 1998-2000 Models)

#### **Pros:**

1. **Compatibility** This part is specifically designed for the 1997-2001 Ford Explorer, including the 1998, 1999, and 2000 model years, ensuring a direct fit without modification.

2. **Quality and Reliability** Facet is a reputable aftermarket parts manufacturer known for producing durable, high-quality sensors that meet or exceed OEM standards.

3. **Cost-Effective** Compared to purchasing an OEM (original equipment manufacturer) sensor, this aftermarket part is often significantly cheaper, making it a budget-friendly alternative.

4. **Easy Installation** The sensor is designed to replace the stock unit with minimal effort, requiring only basic tools and no special expertise.

5. **Warranty Coverage** Facet parts typically come with a warranty (usually 12-24 months), providing some assurance against defects or premature failure.

6. **Availability** This part is widely stocked by auto parts retailers, both online and in physical stores, ensuring quick availability and fast shipping options.

7. **Performance Match** The sensor is engineered to function similarly to the original, helping maintain proper engine temperature readings and cooling system efficiency.

#### **Cons:**

1. **Potential Quality Variations** While Facet is generally reliable, there is a slight risk of receiving a subpar unit if the part is counterfeit or poorly manufactured (though this is rare with reputable sellers).

2. **No OEM Guarantee** Unlike an OEM sensor, this aftermarket part may not have the same long-term durability or exact specifications as the original, though Facet parts are designed to minimize this issue.

3. **Limited Brand Recognition** Some mechanics or DIY enthusiasts may be hesitant to use aftermarket parts, preferring OEM components for peace of mind, though this is subjective.

4. **Compatibility Double-Checking** While the part is listed for multiple years, it s always wise to verify the exact model year and engine variant (e.g., 4.0L V6 vs. 5.0L V8) to avoid mismatches.

5. **Resale Value Impact** If you plan to sell the vehicle later, some buyers may prefer OEM parts, potentially affecting resale value slightly (though this is usually negligible for a sensor).

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### **Conclusion:**

The **Facet 45721KYZF water temperature sensor** is a strong aftermarket alternative to an OEM sensor for your 1997-2001 Ford Explorer. It offers a balance of affordability, reliability, and ease of installation while maintaining compatibility with your vehicle. The risks of using an aftermarket part are minimal if purchased from a trusted seller, and the cost savings are substantial compared to OEM options. For most drivers, this part is an excellent choice, provided you verify its fitment and purchase it from a reputable retailer.

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### **Recommendation:**

**Buy this part.** If your water temperature sensor is faulty (causing check engine lights, poor idle, or overheating), replacing it with the **Facet 45721KYZF** is a practical and cost-effective solution. Here s how to proceed:

1. **Confirm Fitment** Double-check that the part is compatible with your exact model year and engine (e.g., 1998 4.0L V6 Explorer).

2. **Purchase from a Trusted Source** Buy from well-known auto parts retailers (e.g., RockAuto, Amazon, local auto parts stores) to avoid counterfeit or low-quality units.

3. **Follow Installation Instructions** Replace the sensor carefully, ensuring the new unit is properly seated and the electrical connector is secure.

4. **Monitor Performance** After installation, reset the check engine light (if present) and monitor for proper engine temperature readings and cooling system operation.

If you re unsure about the installation or encounter persistent issues, consult a mechanic to verify the sensor s function post-replacement. For most cases, this part will restore your Explorer s cooling system to proper working order reliably.

Details:

2001 Ford Explorer XLT 4.0L V6.

part #: 45721kyzf price

  • $27.07

specifications ocoosys:

  • for models: Explorer
  • for makes: Ford
  • for years: 1997-2001
  • brand: Facet
  • mpn: 45721kyzf
  • part type: Sensor
  • manufacturer warranty: 12 Month Warranty
  • notes: Engine Coolant Temperature Sensor Terminals
  • years: 1997 1998 1999 2000 2001
  • application: Ford Explorer Water Temperature Sensor
  • product name 2: Engine Coolant Temperature Sensor
  • cs-sku: 400

shipping ocoosys:

  • cost: $0.00
  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • type: Fixed
  • transit: 4-8 Days
  • class: Standard

general ocoosys:

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

offer ocoosys:

  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: April 17, 2026
  • quantity: 1

payments ocoosys:

  • other
  • wallet: Google-pay
  • credit card: Discover

seller ocoosys:

  • # reviews: 328792
  • rating: 98.8%
  • city: Pico Rivera, California

returns ocoosys:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted
for models: explorer, for makes: ford, for years: 1997-2001, part type: sensor, manufacturer warranty: 12 month warranty, notes: engine coolant temperature sensor terminals, years: 1997 1998 1999 2000 2001, application: ford explorer water temperature sensor, product name 2: engine coolant temperature sensor, cs-sku: 400,
category: auto parts > car truck parts accessories > engine cooling components, sku: 21090190955258793,
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1 offer $27.07 USD
  • New. Offer #1 priced at $27.07 + $0.00 shipping estimate = $27.07* total. 2001 Ford Explorer XLT 4.0L V6 2001 Ford Explorer XL Fleet.FREE SHIPPING

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