NAPA 455808 Thermostat 5.3 4.8 6.2

( Brand: Napa ), ( Manufacturer Part Number: 455808 ), ( Part Type: Thermostat )

Review NAPA Thermostat 5.3 Gmc 4.8 6.2 fits SILVERADO LTR

Introducing the NAPA 455808 Thermostat, specifically designed for the 5.3L engines found in select GMC Silverado models with 4.8L and 6.2L Vortec engines. This thermostat is an essential component of your cooling system, regulating the engine temperature to ensure optimal performance, fuel efficiency, and longevity.

The NAPA 455808 Thermostat is engineered with a durable, high-quality construction. It features a heavy-duty housing made from corrosion-resistant materials, ensuring reliable operation under extreme temperatures and conditions. The thermostat's internal components consist of a precision-molded, temperature-sensitive element that activates the cooling fan when the engine reaches its optimal operating temperature. This ensures that the engine remains cooled efficiently, reducing the strain on the cooling system.

This NAPA thermostat is designed to meet or exceed OE specifications, ensuring a perfect fit and function in your vehicle. It is also compatible with the vehicle's factory wiring harness, simplifying the installation process. The NAPA 455808 Thermostat comes complete with all necessary hardware for installation, including mounting bolts and a new gasket, making it a hassle-free upgrade for your cooling system.

By choosing the NAPA 455808 Thermostat for your 5.3L GMC Silverado, you can enjoy peace of mind knowing that your engine is being kept at the right temperature for optimal performance. This thermostat is manufactured to meet the highest quality standards, ensuring that it will last as long as your vehicle does. Allow NAPA to help you maintain the reliability and longevity of your cooling system with this top-of-the-line replacement thermostat.

The NAPA 455808 thermostat is designed specifically for 5.3 liter GMC Silverado engines with 4.8L or 6.2L Vortec engines. Here are some potential pros and cons of purchasing this thermostat.

1. Designed for specific engine: This thermostat is engineered to fit and function optimally with 5.3 liter GMC Silverado engines using the 4.8L or 6.2L Vortec engines, reducing the likelihood of compatibility issues.

2. Helps maintain optimal engine temperature: A faulty thermostat can cause the engine to overheat or run too cool, which can lead to poor engine performance and potential damage. A new thermostat can help ensure consistent engine temperature, improving overall performance and longevity.

3. Improved cooling system efficiency: A well-functioning thermostat allows the cooling system to work more efficiently, which can lead to improved fuel economy and reduced engine wear.

4. Relatively affordable: Compared to other engine components, a thermostat is a relatively inexpensive part to replace.

1. May require additional parts: Depending on the condition of the cooling system, replacing the thermostat may require additional parts or labor to ensure the cooling system functions properly.

2. Installation can be time-consuming: Replacing a thermostat can be a time-consuming process, as it may require draining the coolant system, removing various components, and installing the new part.

3. Potential for human error during installation: Improper installation of a thermostat can lead to cooling system issues or engine damage, so it's important to follow the installation instructions carefully.

In conclusion, the NAPA 455808 thermostat can be a worthwhile investment for those driving a 5.3 liter GMC Silverado with a 4.8L or 6.2L Vortec engine. By ensuring proper engine temperature and cooling system efficiency, this part can help improve overall performance and longevity. However, it's important to consider the potential time and cost involved in the installation process, as well as the possibility of requiring additional parts. Ultimately, if you suspect your thermostat is faulty, replacing it can be a cost-effective way to maintain the health of your engine.

Details:

Included: PN 455808 Thermostat Msrp $ 37.99: Fits many GM engines, 4.8, 5.3, 6.2. Benton Beach, FL, PN 455808 Thermostat Msrp. Dielectric connection grease include. THERMOSTAT 4/26.

New in original box. To many to list here.

part #: 455808 prices

• $18.50-$40.00

specifications theostapa:

• for models: Ltr, Silverado
• for makes: Gmc
• brand: Napa
• mpn: 455808
• part type: Thermostat

shipping theostapa:

• type: Fixed
• service: UPS Ground
• transit: 5-11 Days
• carrier: UPS
• cost: $0.00
• class: Standard

returns theostapa:

• paid by: Buyer
• policy: Returns Accepted
• time: 14 Days

general theostapa:

• Car Truck Parts Accessories > Engine Cooling Components > Thermostats Housings
• condition: Used

payments theostapa:

• credit card: Diners-club
• wallet: Google-pay
• other

offer theostapa:

• availability: In Stock
• quantity: 1
• started: April 23, 2026
• options: Ship-to-home
• sold: 0

seller theostapa:

• rating: 100.0%
• # reviews: 2978
• city: Boynton Beach, Florida

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