DELPHI SX-1406 Coolant Temperature Sensor Engine Ng 2.0L L4

( Brand: Delphi ), ( Manufacturer Part Number: SX-1406 ), ( Manufacturer Warranty: 1 Year / 12, 000 Miles ), ( Ipn: C239 47-34 ), ( Placement On Vehicle: Belts Cooling Sensors ), ( Compatible Year: 2003 2002 2001 2000 1999 1998 1997 1996 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Coolant Temperature Sensor ), ( Universal Fitment: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Delphi Engine Coolant Temperature Sensor )

Review DELPHI Coolant Temperature Sensor Toyota 2.0l L4 Engine Ng fits RAV4 1996–2003

The Delphi SX-1406 Coolant Temperature Sensor is a precision-engineered, high-performance replacement part designed specifically for the 2.0-liter inline-four (L4) engine found in Toyota RAV4 models produced between 1996 and 2003, including those equipped with the New Global architecture (NG). This sensor plays a critical role in maintaining optimal engine performance, fuel efficiency, and emissions compliance by continuously monitoring the temperature of the engine coolant. Crafted with Delphi s commitment to quality and reliability, the SX-1406 is built to meet or exceed OEM specifications, ensuring seamless integration with the vehicle s engine control module (ECM). The sensor features a robust, corrosion-resistant construction, including a durable stainless-steel housing and a high-grade thermistor element, which provides accurate and consistent readings across a wide temperature range from cold starts to full operating temperatures. Its threaded design ensures a secure and leak-proof fit when installed in the engine s coolant passage, while the integrated O-ring or gasket (depending on the application) prevents coolant leaks, even under high-pressure conditions. Ideal for both professional mechanics and DIY enthusiasts, this sensor is a direct-fit replacement, eliminating the need for modifications or additional tools beyond standard automotive equipment. Whether addressing a faulty sensor causing rough idling, poor fuel economy, or check engine light (CEL) codes such as P0115, P0116, or P0117, the Delphi SX-1406 delivers the precision and durability required to restore your Toyota RAV4 s engine to peak performance. Backed by Delphi s reputation for innovation and engineering excellence, this sensor is a trusted choice for restoring confidence in your vehicle s cooling and emissions systems.

**Pros and Cons of Buying a Delphi SX-1406 Coolant Temperature Sensor for a 1996-2003 Toyota RAV4 (2.0L L4 Engine, NG Code)**

1. **Compatibility and Fitment** The Delphi SX-1406 is specifically designed for the 2.0L Toyota 2L-FE engine (NG code), making it a direct replacement for the OEM sensor. It should fit without modification, ensuring proper installation and function.

2. **Quality and Durability** Delphi is a reputable manufacturer known for producing high-quality automotive sensors. The SX-1406 is built to last, reducing the likelihood of premature failure compared to cheaper, no-name alternatives.

3. **Accurate Readings** A properly functioning coolant temperature sensor ensures accurate engine temperature monitoring, which is critical for optimal engine performance, fuel efficiency, and emissions control. A faulty sensor can lead to incorrect readings, causing issues like rich/lean fuel mixtures or delayed ignition timing.

4. **Widespread Availability** As an aftermarket part, the SX-1406 is easy to find through online retailers, auto parts stores, and specialty suppliers. It is also commonly stocked by dealers, reducing lead times.

5. **Cost-Effective Replacement** While not the cheapest option, the SX-1406 offers a balance between price and reliability. It is significantly more affordable than purchasing an OEM sensor directly from Toyota, which can be expensive.

6. **Positive User Feedback** Many owners of 1996-2003 Toyota RAV4s report satisfactory results with the Delphi SX-1406, citing improved sensor performance and longevity compared to other brands they have tried.

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1. **Price** Compared to generic or no-brand sensors, the SX-1406 is more expensive. However, the added cost is often justified by its reliability. Budget-conscious buyers may opt for cheaper alternatives, but this could lead to repeated replacements.

2. **Potential Counterfeit Concerns** As with many popular aftermarket parts, there is a risk of purchasing counterfeit or low-quality knockoffs, particularly when buying from untrusted sellers. Always verify the seller s reputation and product authenticity.

3. **Installation Challenges** While the sensor is designed to be a direct replacement, some users may encounter difficulties during installation, such as stubborn threads or difficulty accessing the sensor location. A thorough cleaning of the sensor housing and threads before installation can help prevent issues.

4. **Mixed Reviews on Longevity** While many users report long-term reliability, a small percentage of owners have experienced premature failure (e.g., within a year or two). This is not unique to the Delphi SX-1406 but is a general risk with any sensor. Regular maintenance and monitoring can help mitigate this.

5. **Compatibility with Modifications** If the vehicle has undergone modifications (e.g., turbocharging, forced induction, or extensive tuning), the sensor s performance may not be optimal for high-stress conditions. In such cases, a higher-quality or performance-oriented sensor might be preferable.

6. **Limited Warranty** Aftermarket sensors typically come with shorter warranties (often 6 months to 1 year) compared to OEM parts. This means that if the sensor fails prematurely, the buyer is responsible for replacement costs unless the warranty covers it.

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The Delphi SX-1406 coolant temperature sensor is an excellent choice for a 1996-2003 Toyota RAV4 with a 2.0L L4 engine (NG code). It offers a strong balance of compatibility, reliability, and accuracy, making it a preferred option over cheaper or unknown brands. While it is not the absolute cheapest sensor available, its reputation for durability and performance justifies the cost for most owners. However, buyers should ensure they purchase from a trusted source to avoid counterfeit products and should be prepared for potential installation challenges.

For most standard applications, the Delphi SX-1406 is the recommended sensor due to its proven track record. If the vehicle is heavily modified or used in extreme conditions, further research into performance-oriented sensors may be warranted.

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- You prioritize reliability and accuracy over cost.

- You want a sensor that is widely compatible and easy to find.

- You are willing to pay a slightly higher price for peace of mind and longevity.

- You are on a tight budget and are willing to risk potential premature failure with a cheaper sensor.

- You suspect the seller may be selling counterfeit or low-quality products.

- Your vehicle has extensive modifications that may require a more advanced sensor.

For the average owner driving a stock or lightly modified RAV4, the Delphi SX-1406 is the best choice. Always pair the purchase with a thorough installation and regular maintenance to ensure optimal performance.

Details:

Delphi Coolant Temperature Sensor for 1996 - 2003 Toyota RAV4 2.0L L4 Engine ng: Status: In Stock.

part #: sx1406 prices

• $42.20-$66.12

specifications ocoosys:

• for models: Rav4
• for makes: Toyota
• for years: 1996-2003
• brand: Delphi
• mpn: Sx-1406
• manufacturer warranty: 1 Year / 12, 000 Miles
• ipn: C239 47-34
• placement on vehicle: Belts Cooling Sensors
• compatible year: 2003 2002 2001 2000 1999 1998 1997 1996
• core charge: Free No Core Charge
• type: Engine Coolant Temperature Sensor
• universal fitment: Direct Replacement
• bundle description: 1 Pc Genuine Delphi Engine Coolant Temperature Sensor

shipping ocoosys:

• type: Fixed
• cost: $0.00
• service: Standard, Expedited
• class: Standard, Expedited
• transit: 3-6 Days

returns ocoosys:

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

payments ocoosys:

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

offer ocoosys:

• availability: In Stock
• options: Ship-to-home
• started: March 7, 2026
• sold: 0
• quantity: 4

general ocoosys:

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

seller ocoosys:

• rating: 99.5%
• # reviews: 629972
• city: Indianapolis, Indiana

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