The 2020 Isuzu NPR has 32 cooling system parts with verified fitment on this page — 7 part types and 11 brands, covering all 3 engine options (5.2L L4 DIESEL Turbocharged, 6.0L V8 and 6.6L V8). Each part includes a manufacturer part number and application notes.
On the 2020 Isuzu NPR, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. Most of the listed parts are Coolant / Antifreeze (15 parts), Thermostat (7 parts) and Temperature Sender / Sensor (3 parts). The other 4 part types cover the remaining 7 parts.
The 2020 Isuzu NPR was sold with 3 engines. 5 parts fit every engine; the other 27 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2020 Isuzu NPR cooling system parts are PRESTONE (5 parts), PEAK (5 parts) and VALVOLINE (5 parts), plus 8 more brands. Quality grades include Economy, Standard Replacement and Heavy Duty.
4 parts on this 2020 Isuzu NPR page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PRESTONE AF3100 (Coolant / Antifreeze) and GATES 34198 (Thermostat). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2020 NPR engines | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2020 NPR engines | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: 5.2L L4 DIESEL Turbocharged | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: 6.0L V8 | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 5.2L L4 DIESEL Turbocharged, 6.0L V8 | ZXG051 | 🇺🇸 US 🇨🇦 CA | G05 Yellow1 Gallon | View on Amazon |
| PEAK Fits: 5.2L L4 DIESEL Turbocharged | FXA1GAL | 🇺🇸 US 🇨🇦 CA | Final Charge Global1 Gallon | View on Amazon |
| PRESTONE Fits: all 2020 NPR engines | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
| VALVOLINE Fits: 5.2L L4 DIESEL Turbocharged, 6.0L V8 | 846439 | 🇺🇸 US 🇨🇦 CA | HD Nitrite Free Extended Life Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2020 NPR engines | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: 5.2L L4 DIESEL Turbocharged | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: 5.2L L4 DIESEL Turbocharged | PXA1GAL | 🇺🇸 US 🇨🇦 CA | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 2020 NPR engines | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK Fits: 5.2L L4 DIESEL Turbocharged | PAG1GAL | 🇺🇸 US 🇨🇦 CA | OET Asian Extended Life Green1 Gallon | View on Amazon |
| VALVOLINE Fits: 5.2L L4 DIESEL Turbocharged | 861399 | 🇺🇸 US 🇨🇦 CA | G40 Pink1 Gallon | View on Amazon |
| VALVOLINE Fits: 6.0L V8 | ZX001 | 🇺🇸 US 🇨🇦 CA | Original Green1 Gallon | View on Amazon |
This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator.
15 Coolant / Antifreeze parts for the 2020 Isuzu NPR come from 3 brands — PRESTONE, PEAK and VALVOLINE. The "Popular" part is PRESTONE AF3100. 5 parts fit every engine; the other 10 are engine-specific.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 3 options from PRESTONE, PEAK and VALVOLINE — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.
In the Heavy Duty grade, VALVOLINE, PEAK and PRESTONE supply 4 parts: rated for severe service. A representative part number is VALVOLINE ZXG051.
In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, VALVOLINE and PEAK supply 3 parts: built to original-equipment specification. A representative part number is PEAK PAG1GAL.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Fits: 5.2L L4 DIESEL Turbocharged | 20010707P | 🇺🇸 US 🇨🇦 CA | Aluminum Core with Plastic Tanks | View on Amazon |
This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap.
This group shows a single part: SPECTRA PREMIUM 20010707P.
Radiator Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 5.2L L4 DIESEL Turbocharged | 31336 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.
This group shows a single part: GATES 31336.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.0L V8 | 926016 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 6.0L V8 | TX89T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.0L V8 | TX89 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender.
3 Temperature Sender / Sensor parts for the 2020 Isuzu NPR come from 2 brands — STANDARD MOTOR PRODUCTS and DORMAN.
The Economy section: 2 options from DORMAN and STANDARD MOTOR PRODUCTS. DORMAN 926016 is listed in this group.
Standard Replacement: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS TX89.
This group includes DORMAN 926016, STANDARD MOTOR PRODUCTS TX89T and STANDARD MOTOR PRODUCTS TX89.
Thermostat
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 6.0L V8 | GM0718523 | 🇺🇸 US 🇨🇦 CA | Includes Housing | View on Amazon |
| DORMAN Fits: 6.0L V8 | 9022981 | 🇺🇸 US 🇨🇦 CA | Includes Housing | View on Amazon |
| ULTRA-POWER Fits: 6.0L V8 | 34198 | 🇺🇸 US 🇨🇦 CA | 190 DegreeIncludes Seal | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 6.0L V8 | 34198S | 🇺🇸 US 🇨🇦 CA | Premium | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 6.0L V8 | 34198 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 5.2L L4 DIESEL Turbocharged | 405785 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| MOTORAD Fits: 5.2L L4 DIESEL Turbocharged | 405680 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part.
7 Thermostat parts are listed for the 2020 Isuzu NPR, from GATES, MOTORAD, AUTOTECNICA and 2 other brands. GATES 34198 carries the "Popular" badge.
Economy: 3 parts, from AUTOTECNICA, DORMAN and ULTRA-POWER. A representative part number is AUTOTECNICA GM0718523.
The Heavy Duty section: 1 option from GATES. GATES 34198S is listed in this group.
The Standard Replacement section: 1 option from GATES. GATES 34198 is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Part numbers include GATES 34198, AUTOTECNICA GM0718523 and DORMAN 9022981, among others listed above.
Thermostat Housing / Water Outlet
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.0L V8 | 9022081 | 🇺🇸 US 🇨🇦 CA | Water PumpNPR-HD | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 6.0L V8 | CO34829 | 🇺🇸 US 🇨🇦 CA | Thermostat CoverWater Outlet | View on Amazon |
This table covers the housings and outlets the thermostat sits in.
2 Thermostat Housing / Water Outlet parts are listed for the 2020 Isuzu NPR, from DORMAN and GATES.
Economy: 1 part, from DORMAN. A representative part number is DORMAN 9022081.
The Standard Replacement section: 1 option from GATES. GATES CO34829 is listed in this group.
Listed part numbers: DORMAN 9022081 and GATES CO34829.
Water Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 6.0L V8 | SKMAW6009 | 🇺🇸 US 🇨🇦 CA | Includes Thermostat, Housing and Gasket Kit | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 6.0L V8 | 45010 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 6.6L V8 | SKMAW6009 | 🇺🇸 US 🇨🇦 CA | Includes Thermostat, Housing and Gasket Kit | View on Amazon |
This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off.
3 Water Pump parts are listed for the 2020 Isuzu NPR, from SKP and GATES.
Economy: 1 part, from SKP. A representative part number is SKP SKMAW6009.
The Standard Replacement section: 1 option from GATES. GATES 45010 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: SKP SKMAW6009 and GATES 45010, plus the other parts above.
Buying Cooling System Parts for a 2020 Isuzu NPR
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Match the engine first. Some cooling system parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant / Antifreeze and Thermostat .
Frequently Asked Questions
How many cooling system parts fit the 2020 Isuzu NPR?
Our catalog currently lists 32 cooling system parts for the 2020 Isuzu NPR across 7 subcategories and 11 brands, covering all 3 engine options (5.2L L4 DIESEL Turbocharged, 6.0L V8 and 6.6L V8). Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2020 Isuzu NPR engines?
Some do. 5 parts fit every engine; the other 27 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 2020 Isuzu NPR?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2020 Isuzu NPR was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2020 Isuzu NPR?
First match the engine — each row shows which engine(s) the part fits. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 Isuzu NPR
Cooling System Parts for Other Isuzu NPR Years
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