2000 Isuzu NQR 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

13 Coolant / Antifreeze parts are listed for the 2000 Isuzu NQR, from PRESTONE, PEAK, VALVOLINE and 1 other brand. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Heavy Duty section lists 2 options from PEAK and PRESTONE — rated for severe service. PEAK FXA1GAL is listed in this group.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 2 options from VALVOLINE — built to original-equipment specification. VALVOLINE ZXEL1 is listed in this group.

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

This group shows a single part: 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

This group shows a single part: DORMAN 9241059.

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

4 Radiator parts are listed for the 2000 Isuzu NQR, from ULTRA-POWER, CSF, OSC and 1 other brand.

Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER 20010701.

The Standard Replacement section: 3 options from CSF, OSC and SPECTRA PREMIUM. CSF 3210 is listed in this group.

Listed part numbers: ULTRA-POWER 20010701, CSF 3210 and OSC HD1176, 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

2 Radiator Fan Blade parts for the 2000 Isuzu NQR come from 2 brands — DORMAN and GPD.

This group includes DORMAN 6205603 and GPD 2812352.

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

8 Radiator Hose parts for the 2000 Isuzu NQR come from 4 brands — CONTINENTAL, GATES, ACDELCO and 1 other brand. The "Popular" part is CONTINENTAL 62699.

Part numbers include CONTINENTAL 62699, GATES 23096 and ACDELCO 20456S, among others listed 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

4 Thermostat parts for the 2000 Isuzu NQR come from 2 brands — GATES and MOTORAD.

Heavy Duty: 2 parts, from GATES. A representative part number is GATES 33964.

Standard Replacement: 2 parts, from MOTORAD. A representative part number is MOTORAD 405785.

Part numbers include GATES 33964, GATES 33965 and MOTORAD 405785, among others listed above.

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

5 Water Pump parts for the 2000 Isuzu NQR come from 5 brands — FVP, US MOTOR WORKS, GATES and 2 other brands. The "Popular" part is GATES 42239HD.

The Economy section: 2 options from FVP and US MOTOR WORKS. FVP US8969 is listed in this group.

The High Volume / Pressure section lists 1 option from GATES — grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. GATES 42239HD is listed in this group.

Standard Replacement: 2 parts, from DAYCO and GMB. A representative part number is DAYCO DP1767.

This group includes GATES 42239HD and FVP US8969 and the remaining parts above.