2002 Isuzu NPR Cooling System Parts

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. Read more

14 Coolant / Antifreeze parts for the 2002 Isuzu NPR come from 4 brands — PRESTONE, PEAK, VALVOLINE and 1 other brand. The "Popular" part is FVP MV5050GAL. Every part fits both the 4.8L L4 DIESEL Turbocharged and the 5.7L V8.

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 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Heavy Duty grade, PRESTONE and PEAK supply 3 parts: rated for severe service. A representative part number is PEAK FXA1GAL.

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 supplies 2 parts: built to original-equipment specification. A representative part number is VALVOLINE ZXEL1.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

One part is listed for the 2002 Isuzu NPR — DORMAN 6035603.

This table covers the caps on the overflow / expansion tank. 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. Read more

One part is listed for the 2002 Isuzu NPR — DORMAN 9241059.

This table covers the adapters used to pressure-test this cooling system. Read more

4 Cooling System Tester Adapter parts for the 2002 Isuzu NPR come from 3 brands — MOTORAD, GATES and STANT. Every part fits both the 4.8L L4 DIESEL Turbocharged and the 5.7L V8.

Listed part numbers: GATES 31428, MOTORAD 3121 and MOTORAD 3122, plus the other parts above.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

3 Intercooler parts for the 2002 Isuzu NPR come from 3 brands — CSF, GPD and SPECTRA PREMIUM.

Listed part numbers: CSF 6051, GPD 2711272 and SPECTRA PREMIUM 44010703.

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. Read more

15 Radiator parts for the 2002 Isuzu NPR come from 7 brands — GPD, CSF, OSC and 4 other brands. The "Popular" part is CSF 3220.

The Economy section: 5 options from GPD and ULTRA-POWER. GPD 9243220 is listed in this group.

In the Heavy Duty (All Metal Construction) grade, CSF supplies 2 parts: rated for severe service. A representative part number is CSF 3220.

Standard Replacement: 6 parts, from CSF, OSC, SPECTRA PREMIUM and 1 other brand. A representative part number is CSF 3210.

2 further parts sit outside the graded sections, with the same engine-level match.

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. Read more

7 Radiator Cap parts for the 2002 Isuzu NPR come from 5 brands — GATES, MOTORAD, CALORSTAT and 2 other brands. The "Popular" part is MOTORAD T16R. Every part fits both the 4.8L L4 DIESEL Turbocharged and the 5.7L V8.

In the Locking Replacement grade, CALORSTAT, GATES and MOTORAD supply 3 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is CALORSTAT RC0212.

Standard Replacement: 4 parts, from MOTORAD, SKP, CSF and 1 other brand. A representative part number is MOTORAD T16R.

Listed part numbers: MOTORAD T16R, CALORSTAT RC0212 and GATES 31534, plus the other parts above.

This table covers the Radiator Fan blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different. Read more

One part is listed for the 2002 Isuzu NPR — DORMAN 6205603.

This table covers the Radiator Fan clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

4 Radiator Fan Clutch parts for the 2002 Isuzu NPR come from 4 brands — FOUR SEASONS, HAYDEN, NISSENS and 1 other brand.

This group includes FOUR SEASONS 36947, HAYDEN 2787 and NISSENS 86465 and the remaining parts above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

16 Radiator Hose parts are listed for the 2002 Isuzu NPR, from DAYCO, CONTINENTAL, GATES and 1 other brand. CONTINENTAL 62699 carries the "Popular" badge.

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. Read more

8 Temperature Sender / Sensor parts for the 2002 Isuzu NPR come from 6 brands — STANDARD MOTOR PRODUCTS, WELLS, NTK and 3 other brands. The "Popular" part is NTK EF0008. 6 parts fit every engine; the other 2 are engine-specific.

The Economy section: 4 options from NTK, GPD, STANDARD MOTOR PRODUCTS and 1 other brand. NTK EF0008 is listed in this group.

Standard Replacement: 4 parts, from WELLS, ROSTRA and STANDARD MOTOR PRODUCTS. A representative part number is WELLS 5S1018.

Listed part numbers: NTK EF0008, GPD 1711697 and STANDARD MOTOR PRODUCTS TS375T, plus the other parts above.

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. Read more

27 Thermostat parts are listed for the 2002 Isuzu NPR, from MOTORAD, CALORSTAT, GATES and 1 other brand. MOTORAD 5265195 carries the "Popular" badge. Heavy Duty, Performance, Premium and Standard Replacement are all represented, and Standard Replacement alone accounts for 14 parts.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

This group shows a single part: MAHLE / CLEVITE C31273.

This table covers the housings and outlets the thermostat sits in. Read more

2 Thermostat Housing / Water Outlet parts are listed for the 2002 Isuzu NPR, from DORMAN and MOTORAD.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 902754.

The Standard Replacement section: 1 option from MOTORAD. MOTORAD CH5169 is listed in this group.

Listed part numbers: DORMAN 902754 and MOTORAD CH5169.

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. Read more

16 Water Pump parts are listed for the 2002 Isuzu NPR, from FVP, US MOTOR WORKS, GMB and 4 other brands. GATES 42239HD carries the "Popular" badge.

Economy: 6 parts, from FVP, US MOTOR WORKS, SKP and 1 other brand. A representative part number is FVP US8969.

In the High Volume / Pressure grade, GATES, FVP, GMB and 1 other brand supply 4 parts: grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. A representative part number is GATES 42239HD.

The Standard Replacement section: 6 options from DAYCO, GMB, GATES and 1 other brand. DAYCO DP957 is listed in this group.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Water Pump Gasket parts for the 2002 Isuzu NPR come from MAHLE / CLEVITE.

Listed part numbers: MAHLE / CLEVITE K25935 and MAHLE / CLEVITE K27091.

This table covers the Water Pump Stud kits. Read more

One part is listed for the 2002 Isuzu NPR — DORMAN 902804.