2003 Acura NSX 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

18 Coolant / Antifreeze parts for the 2003 Acura NSX come from 7 brands — PRESTONE, PEAK, VALVOLINE and 4 other brands. The "Popular" part is FVP MV5050GAL. Every part fits both the 3.0L V6 and the 3.2L V6.

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 Premium grade, PRESTONE and PEAK supply 5 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, BECK/ARNLEY, AISIN and 2 other brands supply 8 parts: built to original-equipment specification. A representative part number is VALVOLINE ZXEL1.

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

MOTORAD supplies both parts for the 2003 Acura NSX. All of them fit every engine offered in the 2003 NSX.

The Locking Replacement section lists 1 option from MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST16R is listed in this group.

The Standard Replacement section: 1 option from MOTORAD. MOTORAD T16R is listed in this group.

Part numbers include MOTORAD ST16R and MOTORAD T16R.

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

4 Cooling System Tester Adapter parts for the 2003 Acura NSX come from 3 brands — MOTORAD, GATES and STANT. Every part fits both the 3.0L V6 and the 3.2L V6.

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

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

2 Radiator parts for the 2003 Acura NSX come from 2 brands — TECHPRO and KOYORAD. Every part fits both the 3.0L V6 and the 3.2L V6.

The Economy section: 1 option from TECHPRO. TECHPRO AC3010109 is listed in this group.

Standard Replacement: 1 part, from KOYORAD. A representative part number is KOYORAD V2032.

Listed part numbers: TECHPRO AC3010109 and KOYORAD V2032.

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

5 Radiator Cap parts for the 2003 Acura NSX come from 3 brands — CALORSTAT, GATES and SKP. The "Popular" part is SKP SK10233. Every part fits both the 3.0L V6 and the 3.2L V6.

Locking Replacement: 2 parts, from CALORSTAT and GATES. A representative part number is CALORSTAT RC0212.

Standard Replacement: 3 parts, from SKP, CALORSTAT and GATES. A representative part number is SKP SK10233.

This group includes SKP SK10233, CALORSTAT RC0212 and GATES 31534 and the remaining parts above.

This table covers the petcocks used to drain the radiator. Read more

One part is listed for the 2003 Acura NSX — DORMAN 490216.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

2 Radiator Fan Motor parts for the 2003 Acura NSX come from FOUR SEASONS.

Part numbers include FOUR SEASONS 75756 and FOUR SEASONS 75750.

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

CONTINENTAL supplies both parts for the 2003 Acura NSX. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include CONTINENTAL 62600 and CONTINENTAL 62735.

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

14 Temperature Sender / Sensor parts for the 2003 Acura NSX come from 13 brands — STANDARD MOTOR PRODUCTS, SKP, GPD and 10 other brands. The "Popular" part is SKP SK1580154. Every part fits both the 3.0L V6 and the 3.2L V6.

The Economy section: 6 options from SKP, STANDARD MOTOR PRODUCTS, GPD and 3 other brands. SKP SK1580154 is listed in this group.

Standard Replacement: 8 parts, from BECK/ARNLEY, DELPHI, FOUR SEASONS and 5 other brands. A representative part number is BECK/ARNLEY 1580154.

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

15 Thermostat parts are listed for the 2003 Acura NSX, from MOTORAD, BECK/ARNLEY, CALORSTAT and 6 other brands. MOTORAD 5302170 carries the "Popular" badge. 14 parts fit every engine; the other 1 is engine-specific.

The Heavy Duty section lists 1 option from MOTORAD — rated for severe service. MOTORAD 5302170 is listed in this group.

The Premium section: 1 option from MOTORAD. MOTORAD 7302170 is listed in this group.

The Standard Replacement section: 13 options from MOTORAD, BECK/ARNLEY, CALORSTAT and 6 other brands. AISIN THH017 is listed in this group.

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

9 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2003 Acura NSX come from 9 brands — FEL-PRO, MOTORAD, AISIN and 6 other brands. The "Popular" part is FEL-PRO 35162. 8 parts fit every engine; the other 1 is engine-specific.

Part numbers include FEL-PRO 35162, MOTORAD MG81 and AISIN THP509, among others listed above.

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

4 Thermostat Housing / Water Outlet parts are listed for the 2003 Acura NSX, from DORMAN, GPD, FOUR SEASONS and 1 other brand. All of them fit every engine offered in the 2003 NSX.

Economy: 2 parts, from DORMAN and GPD. A representative part number is DORMAN 9025116.

The Standard Replacement section: 2 options from FOUR SEASONS and MOTORAD. FOUR SEASONS 85308 is listed in this group.

This group includes DORMAN 9025116, GPD 8241505 and FOUR SEASONS 85308 and the remaining parts 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

2 Water Pump parts are listed for the 2003 Acura NSX, from FVP and US MOTOR WORKS. All of them fit every engine offered in the 2003 NSX.

This group includes FVP US9219 and the remaining parts above.