2003 Isuzu NPR Engine Cooling Parts
Keep Your 2003 Isuzu NPR in Top Shape with Quality Engine Cooling Parts
Whether you’re repairing or upgrading your Engine Cooling Part, using high-quality parts is key to keeping your 2003 Isuzu NPR looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including , , and . Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Engine Cooling Parts from Trusted Brands
Looking for a reliable Engine Cooling Part? We’ve got you covered with options from brands you know and trust like , Dorman, and Imperial. For example, Engine Cooling Parts start at just $14.99 with an average 4.4 star rating. Dorman and Imperial offer similar pricing and quality, backed by strong customer feedback. With over 2,226 reviews and a solid 4 star average, you can shop with confidence knowing other Isuzu NPR owners approve.
Competitive Prices and Extensive Inventory
The average price for a 2003 Isuzu NPR Engine Cooling Part at Advance Auto Parts is around $108.31, with a range that starts at $11.99 and goes up to $878.99. With 39 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like Standard Thermostat: With Seal, 187 Degrees, Engine Water Pump, and Engine Water Pump_New start at just $17.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Cooling Part, don’t forget to check out other key components like Air Conditioning Parts. At Advance Auto Parts, we’re here to help you keep your 2003 Isuzu NPR in peak condition, inside and out.
Essential 2003 Isuzu NPR Engine Cooling Parts
Dorman – Coolant Housing/Water Outlet: with Housing and Gasket, 45 Degree Neck Angle (Part No.902-754)
from
$57.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Motorad – Engine Coolant Thermostat Housing Assembly Thermostat: With Seal, 195 Degrees (Part No.5169KT)
from
$21.99
Kit includes thermostat, housing, and all necessary seals/gaskets to do the complete job. These individual parts are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat and housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Product Features:
Carquest Premium – Radiator Cap: 16 PSI (Part No.10226)
from
$9.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.
Product Features:
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Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Carquest Premium – Radiator Cap: 16 PSI (Part No.10330)
from
$13.49
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.
Product Features:
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Product Features:
- Safety lever to vent coolant pressure before removal
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Carquest Premium – Radiator Cap Tester Adapter (Part No.12021)
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$18.99
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.
Product Features:
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Product Features:
- Machined metal construction
- Works with MT-300 pressure tester
- Tests coolant caps
- Professional quality
Carquest Premium – Radiator Cap Tester Adapter (Part No.12552)
from
$14.99
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.
Product Features:
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Product Features:
- Machined metal construction
- Works with MT-300 pressure tester
- Tests coolant caps
- Professional quality
Dorman – HD Solutions – Engine Coolant Reservoir Cap: Twist, Plastic/Rubber/Metal, 1 Pack (Part No.924-1059)
from
$36.99
Cracked or lost the original engine coolant reservoir cap Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.
Product Features:
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Product Features:
- Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
- Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
- Seamless fit – reverse-engineered from the original equipment to fit perfectly
- Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
Carquest Premium – Radiator (Part No.867204)
from
$626.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.
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Product Features:
- Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
- Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
- Our fin edges are folded for increased stability and heat disbursement properties.
- Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
- Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
- We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
- We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
Carquest Premium – Radiator (Part No.867203)
from
$402.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.
Product Features:
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Product Features:
- Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
- Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
- Our fin edges are folded for increased stability and heat disbursement properties.
- Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
- Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
- We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
- We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
Carquest Premium – Temperature Sender With Gauge and Harness (Part No.WTC1035)
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$31.99
Product Features:
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- Designed to meet or exceed OE specifications for fit, form and function
- 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
- OE precision matched thermistor ensuring sensors match OE output resistances across all temperature positions
- O-rings, seals or thread sealant are included if required
- Weather-tight connectors prevent leaks and corrosion for longer life
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Dorman – Coolant Temperature Sensor (Part No.926-016)
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$24.99
This engine coolant temperature sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.
Product Features:
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Product Features:
- Direct replacement – this engine coolant temperature sensor is designed to match the fit and function of the original sensor on specified vehicles
- Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
- Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
- Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
Imperial – Electric Fan, 12" Diameter (Part No.226112)
from
$108.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
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Product Features:
- Rapid-Cool Thin-Line electric fans
- 12″ Diameter
- 800 CFM
- Use as a pusher or puller fan
- Motors built and tested to quality specifications
- 12 in. universal fit reversible fan
- 800 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
Imperial – Electric Fan, 14" Diameter (Part No.226114)
from
$99.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
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Product Features:
- Motors built and tested to quality specifications
- 14 in. universal fit reversible fan
- 1250 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
- Motors built and tested to quality specifications
- 14 in. universal fit reversible fan
- 1250 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
Dorman – HD Solutions – Non-Pressurized Coolant Reservoir (Part No.603-5603)
from
$109.99
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.
Product Features:
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Product Features:
- Direct replacement – this engine coolant reservoir matches the fit and function of the original part
- Ideal solution – engineered for a seamless installation
- Durable construction – manufactured from quality materials to withstand underhood heat and vibration
- Trustworthy design – backed by 100 years of automotive aftermarket experience
Dorman – Water Pump Mounting Hardware Kit (Part No.902-804)
from
$14.99
This engine water pump stud kit is designed to match the original hardware required to repair the water pump on specified vehicles. Made of quality components, this kit is engineered for reliable performance and durability.
Product Features:
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Product Features:
- Direct replacement – this engine water pump stud kit is designed to match the original hardware required to repair the water pump on specified vehicles
- Ideal solution – this kit is a reliable replacement for original hardware that is missing or damaged
- Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
- Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
Dorman – Clutch Fan Blade: Plastic, Cost Effective and Reliable (Part No.620-5603)
from
$174.99
Replace your damaged cooling fan blade with this direct replacement. This vehicle-specific application is engineered for a perfect fit and is made from quality materials to ensure durability and restore proper cooling system operation.
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Product Features:
- Direct replacement – this engine cooling fan blade fits and functions like the original equipment fan blade
- Quality construction – manufactured from premium materials for a long service life
- Excellent value – original equipment quality at a lower price
- Quality tested – has undergone testing to ensure proper fit and performance
Imperial – Thermostatic Fan Control – Preset (Part No.226206)
from
$46.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
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Product Features:
- Preset thermostatic fan control
- 185 Deg. F preset
- For use with Imperial electric fans
- Probe installs into radiator fins
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Imperial – Adjustable Thermostatic Fan Control (Part No.226203)
from
$23.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
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Product Features:
- Economy adjustable thermostatic fan control
- Economy Model; 32-248 Deg. F
- For use with Imperial electric fans
- Probe installs into radiator fins
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Carquest Premium – Engine Cooling Fan Module (Part No.ACC1313)
from
$99.99
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.
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Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Dorman – Thermostat Assembly: Includes Housing and O-Ring, 160 Degrees (Part No.902-2701)
from
$65.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Dorman – Thermostat Assembly: Includes Housing (Part No.902-2836)
from
$74.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Driveworks Water Pumps – Engine Water Pump (Part No.58-562)
from
$104.99
This replacement engine water pump is leak and flow tested. Gaskets and seals are included where applicable.
Product Features:
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Product Features:
- This pump is used on accessory belt driven applications
- Used mostly on models equipped with a fan clutch
- It is highly recommended that the fan clutch be replaced with the water pump
- All gaskets or seals necessary for installation are supplied with pump
- Durable housing features precisely machined mounting surfaces for proper sealing
Driveworks Water Pumps – Water Pump (Part No.58-653)
from
$153.99
Using advanced re-engineering materials and processes, our remanufactured water pumps match O.E. fit and performance. Each unit is supplied with new, unitized seals and the proper O.E.-specified bearing design to meet the specific radial and axial load.
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Product Features:
- 100% leak testing and hub-pull testing ensures reliable performance.
- O.E.-supplied NEW unitized seals ensure long-lasting, trouble-free performance.
- The proper O.E. specified bearing design is installed to meet the specific radial and axial load requirements of each application. This ensures longer bearing life and reliable performance.
- Thermostat seal and mounting gasket are supplied for ease of installation (where applicable).
Carquest Premium – Engine Water Pump with Thermostat and Housing (Part No.T7181)
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$188.99
Manufactured to meet or exceed OEM specifications.
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Product Features:
- 100% factory tested for leakage and dimensional precision.
- Bearing noise and durability-tested.
- Designed to match OE coolant flow rate and pressure.
- All required hardware included for easy installation.
Carquest Premium – Thermal Fan Clutch – Severe Duty Reverse Rotation (Part No.215113)
from
$93.99
Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. CARQUEST fan clutches are designed to meet OE performance specifications.
Product Features:
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Product Features:
- Designed, tested, and built by application
- OE performance, fit, and appearance
- Precision machined
- Out of box installation
- Designed, tested, and built by application
- OE performance, fit, and appearance
- Precision machined
- Out of box installation
Carquest Premium – Engine Cooling Fan Clutch: Reverse Rotation Severe Duty Thermal Clutch (Part No.215158)
from
$95.99
Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. CARQUEST fan clutches are designed to meet OE performance specifications.
Product Features:
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Product Features:
- Designed, tested, and built by application
- OE performance, fit, and appearance
- Precision machined
- Out of box installation
- Designed, tested, and built by application
- OE performance, fit, and appearance
- Precision machined
- Out of box installation
Popular 2003 Isuzu NPR Engine Cooling Parts Categories
Most Popular Thermostat and Water Outlet Assemblies for 2003 Isuzu NPRs
Enhance your 2003 Isuzu NPR with one of the 2 Thermostat and Water Outlet Assemblies we have in stock, starting at just $65.99.
Dorman – Thermostat Assembly: Includes Housing (Part No.902-2836)
from
$74.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Dorman – Thermostat Assembly: Includes Housing and O-Ring, 160 Degrees (Part No.902-2701)
from
$65.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Best-Selling 2003 Isuzu NPR Thermostats
Upgrade your NPR with one of our 11 best-selling Thermostats, earning an average 4.33 stars rating across 429 reviews.
Carquest Premium – Standard Thermostat: With Seal, 187 Degrees (Part No.14948)
from
$17.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Carquest Premium – Standard Thermostat: With Seal, 195 Degrees (Part No.14119)
from
$11.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Carquest Premium – Heavy Duty Thermostat: With Seal, 185 Degrees (Part No.14968)
from
$38.49
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Motorad UltraStats – UltraStat Thermostat: With Seal, 195 Degrees (Part No.5265-195)
from
$18.29
This premium upgraded thermostat is everything you were looking for. UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resistance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components. This is the perfect upgrade to help insure your cooling system is working exactly as you need and expect it to for longevity.
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Product Features:
- Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
- Heavy gauge stainless steel components offer increased reliability and long-lasting durability
- Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
- AccuSpring Design for stable temperature control and increased cabin comfort
Motorad – Engine Coolant Thermostat Housing Assembly Thermostat: With Seal, 195 Degrees (Part No.5169KT)
from
$21.99
Kit includes thermostat, housing, and all necessary seals/gaskets to do the complete job. These individual parts are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat and housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Carquest Premium – Heavy Duty Thermostat: 180 Degrees (Part No.13738)
from
$15.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Carquest Premium – Heavy Duty Thermostat: With Seal, 180 Degrees (Part No.14959)
from
$39.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Carquest Premium – Heavy Duty Thermostat: 195 Degrees (Part No.13739)
from
$17.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Motorad – Standard Thermostat: With Seal, 187 Degrees (Part No.524-190)
from
$17.49
Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
Product Features:
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Product Features:
- High grade stainless steel and copper construction
- Meets or exceeds OEM standards
- Consistent and precise response to cooling system needs
- Original equipment design for worry-free direct fit replacement
- 100% tested and calibrated
Dorman – Thermostat Assembly: Includes Housing, Thermostat, and O-Ring, 180 Degrees (Part No.902-2700)
from
$41.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Dorman – Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 186 Degrees (Part No.902-700)
from
$33.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Top-Quality Coolant Reservoirs for 2003 Isuzu NPRs
Choose a high-quality OEM or aftermarket Coolant Reservoir for Isuzu NPRs and enjoy top-notch performance from $109.99.
Dorman – HD Solutions – Non-Pressurized Coolant Reservoir (Part No.603-5603)
from
$109.99
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.
Product Features:
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Product Features:
- Direct replacement – this engine coolant reservoir matches the fit and function of the original part
- Ideal solution – engineered for a seamless installation
- Durable construction – manufactured from quality materials to withstand underhood heat and vibration
- Trustworthy design – backed by 100 years of automotive aftermarket experience
Top Picks for 2003 Isuzu NPR Water Pumps
Invest in one of our 5 durable Water Pumps for your 2003 Isuzu, knowing you’re getting trusted brands and expert craftsmanship.
Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T7052)
from
$151.99
This premium water pump uses new high-quality components and is designed to meet or exceed OE specifications. This pump is 100% tested to ensure quality. Bearings, gaskets, seals, impeller, hub and housing are all designed for long-lasting service life. All necessary gaskets and seals are included.
Product Features:
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Product Features:
- 100% tested for reliable performance
- Durable housing features precisely machined mounting surface for proper sealing and fitment
- Equipped with weep chamber or similar feature to help prevent unnecessary replacement
- Included heavy-duty unitized bearings, pressed-on hubs and optimal impeller clearance for a long-lasting water pump
- All gaskets or seals necessary for water pump are included
- This pump is driven by the accessory belt and we recommend replacement if nearing service recommendation
- This pump is driven by the timing chain; see vehicle manufacturer recommendation for replacement of timing components
- This pump is driven by the timing belt; see vehicle manufacturer recommendation for replacement of timing components
- Additional Notes: Includes gasket
Driveworks Water Pumps – Engine Water Pump (Part No.58-562)
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$104.99
This replacement engine water pump is leak and flow tested. Gaskets and seals are included where applicable.
Product Features:
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Product Features:
- This pump is used on accessory belt driven applications
- Used mostly on models equipped with a fan clutch
- It is highly recommended that the fan clutch be replaced with the water pump
- All gaskets or seals necessary for installation are supplied with pump
- Durable housing features precisely machined mounting surfaces for proper sealing
Carquest Premium – Engine Water Pump_New (Part No.T3131)
from
$73.99
This premium water pump uses new high-quality components and is designed to meet or exceed OE specifications. This pump is 100% tested to ensure quality. Bearings, gaskets, seals, impeller, hub and housing are all designed for long-lasting service life. All necessary gaskets and seals are included.
Product Features:
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Product Features:
- Built to meet or exceed OE fit, form and function
- All components necessary for installation are supplied with pump
- 100% tested for reliable performance
- Additional Notes: Includes gasket
Gates – Heavy-Duty Engine Water Pump (Part No.42239HD)
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$254.99
Gates carries a huge line of water pumps for heavy duty applications. Our heavy duty water pump offering is designed to handle rugged Fleet standards.
Product Features:
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Product Features:
- Our heavy-duty water pump is designed to withstand severe and rigorous conditions.
- 100 percent fully tested unitized bearings and seals
- Computer-machined surfaces for perfect installation and sealing
- Gates heavy-duty water pumps are represented as a part number with an HD suffix
- Backed by a limited warranty
- New pumps manufactured to ISO/TS 16949 standards
Carquest Premium – Engine Water Pump with Thermostat and Housing (Part No.T7181)
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$188.99
Manufactured to meet or exceed OEM specifications.
Product Features:
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Product Features:
- 100% factory tested for leakage and dimensional precision.
- Bearing noise and durability-tested.
- Designed to match OE coolant flow rate and pressure.
- All required hardware included for easy installation.
Radiators for 2003 Isuzu NPRs
Make a smart move for your 2003 Isuzu NPR with products all priced from $402.99 to $878.99.
Carquest Premium – Radiator (Part No.867203)
from
$402.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.
Product Features:
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Product Features:
- Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
- Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
- Our fin edges are folded for increased stability and heat disbursement properties.
- Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
- Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
- We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
- We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
Carquest Premium – Radiator (Part No.867200)
from
$878.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.
Product Features:
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Product Features:
- Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
- Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
- Our fin edges are folded for increased stability and heat disbursement properties.
- Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
- Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
- We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
- We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
Carquest Premium – Radiator (Part No.867202)
from
$488.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.
Product Features:
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Product Features:
- Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
- Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
- Our fin edges are folded for increased stability and heat disbursement properties.
- Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
- Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
- We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
- We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
Top-Rated Engine Cooling Part Brands For Your 2003 Isuzu NPR
When it comes to finding the perfect Engine Cooling Part for your 2003 Isuzu NPR, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 trusted brands. We carry the most popular Engine Cooling Part brands including , Dorman, and Imperial, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $14.99. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Isuzu NPR, providing peace of mind with parts that meet or exceed OEM standards.
Popular Carquest Premium 2003 Isuzu NPR Engine Cooling Parts
If you’re looking for a top-quality Engine Cooling Part for your 2003 Isuzu NPR, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Engine Cooling Parts. We have 3 Carquest Premium Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $14.99 and an average cost of $61.66, you’ll find the perfect Engine Cooling Part for your needs and budget. Carquest Premium Engine Cooling Parts for the 2003 Isuzu NPR come highly rated, with over 753 customer reviews and an impressive average rating of 4.4 stars. Choosing a Carquest Premium Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$151.99
(371)
Engine Water Pump: New, Gasket/Seals Included
“this was one of the easys’t waterpumps i have ever installed”
Top-Quality Dorman 2003 Isuzu NPR Engine Cooling Parts
For those in search of a high-quality Engine Cooling Part for their 2003 Isuzu NPR, Advance Auto Parts offers a great selection of Dorman Engine Cooling Parts. With 1 Dorman Engine Cooling Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Cooling Parts start at just $14.99, giving you a range of options to suit your budget. Backed by over 1 customer ratings and an average rating of 4.2 stars, Dorman Engine Cooling Parts provide both reliability and excellent performance. Choosing a Dorman Engine Cooling Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
FAQs for 2003 Isuzu NPR Engine Cooling Parts
What are the best-selling Engine Cooling Parts for 2003 Isuzu NPRs?
Out of 39 Engine Cooling Parts that fit 2003 Isuzu NPRs, the following parts are the top sellers:
- Standard Thermostat: With Seal, 187 Degrees (5650102) – $17.99
- Engine Water Pump (20420611) – $104.99
- Engine Water Pump_New (5420021) – $73.99
What’s the price range for 2003 Isuzu NPR Engine Cooling Parts?
The prices of Engine Cooling Parts for the 2003 Isuzu NPR range from $11.99 up to $878.99 for the most premium parts.
What is the average price of an Engine Cooling Part for a 2003 Isuzu NPR?
The average price for Engine Cooling Parts for the 2003 Isuzu NPR is $108.31. Keep in mind the variety of part types within our Engine Cooling Part category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Cooling Parts for other Isuzu NPR model years?
What are the cheapest Engine Cooling Parts for my 2003 Isuzu NPR?
The cheapest 2003 Isuzu NPR Engine Cooling Parts we carry are:
- Standard Thermostat: With Seal, 195 Degrees (5650003) – $11.99
- Radiator Cap: 16 PSI (17110021) – $14.99
- Water Pump Mounting Hardware Kit (22149372) – $14.99
- Coolant Housing/Water Outlet: With Gasket (50184070) – $14.99
- Heavy Duty Thermostat: 180 Degrees (5481082) – $15.99
Does Advance Auto Parts sell Engine Cooling Parts for any other 2003 Isuzu models?
Yes. We stock Engine Cooling Parts for 6 other popular 2003 Isuzu models. Some of the most popular are 2003 Ascender Engine Cooling Parts, 2003 Axiom Engine Cooling Parts, 2003 NPR-HD Engine Cooling Parts, 2003 FTR Engine Cooling Parts, and 2003 FRR Engine Cooling Parts.
What are the top-rated Engine Cooling Parts that fit the 2003 Isuzu NPR?
Based on 2,226 reviews by customers, our 2003 Isuzu NPR Engine Cooling Parts have an average customer rating of 4 stars. These are the highest-rated categories of Engine Cooling Parts for the 2003 Isuzu NPR and their top-rated products:
- Engine Coolant Thermostat Housing Caps
- Radiator Cap: 16 PSI (17110021) – $14.99
- Radiator Cap: 16 PSI (17110039) – $21.99
- Water Pump Pulley Bolts
- Water Pump Mounting Hardware Kit (22149372) – $14.99
What types of Engine Cooling Parts do you sell for my 2003 Isuzu NPR?
As of 3/1/26, these are some of the most in-demand types of Engine Cooling Parts for a 2003 Isuzu NPR:
Can I get help with 2003 Isuzu NPR Engine Cooling Part orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Isuzu Engine Cooling Parts and more.
What is your return policy for Isuzu NPR Engine Cooling Parts?
Advance Auto Parts keeps returns simple. For new Isuzu NPR Engine Cooling Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.