2004 Honda Civic Cooling System Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

38 Cooling system parts are listed for the 2004 Honda Civic, in 7 part types, covering all 4 engine options (1.3L L4 ELECTRIC/GAS, 1.7L L4, 1.7L L4 CNG and 2.0L L4). Each one has a brand, a manufacturer part number and notes that say where it fits.

On the 2004 Honda Civic, 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), Radiator (7 parts) and Radiator Cap (5 parts). The other 4 part types cover the remaining 11 parts.

Coolant / Antifreeze

Compatible With All Colors

Brand Part Number Markets Notes Buy
PRESTONE Fits: 1.3L L4 ELECTRIC/GAS AF3055
🇺🇸 US 🇨🇦 CA
Prime YellowAll Vehicles
Fitment notes — PRESTONE AF3055
Prime YellowAll VehiclesExtended Life55 GAL DrumConcentratePrime® Extended Life All Makes All Models
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Economy

Brand Part Number Markets Notes Buy
FVP Popular Fits: 1.3L L4 ELECTRIC/GAS MV5050GAL
🇺🇸 US 🇨🇦 CA
Extended LifeAll Makes / All Models
Fitment notes — FVP MV5050GAL
Extended LifeAll Makes / All Models1 Gallon
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PEAK Fits: 1.3L L4 ELECTRIC/GAS BQA1GAL
🇺🇸 US 🇨🇦 CA
Blue Mountain Long LifeAll Vehicle
Fitment notes — PEAK BQA1GAL
Blue Mountain Long LifeAll Vehicle1 Gallon
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PRESTONE Fits: 1.3L L4 ELECTRIC/GAS AF3100
🇺🇸 US 🇨🇦 CA
Prime Yellow - All VehiclesExtended Life
Fitment notes — PRESTONE AF3100
Prime Yellow - All VehiclesExtended Life1 Gallon
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Premium

Brand Part Number Markets Notes Buy
PRESTONE Popular Fits: 1.3L L4 ELECTRIC/GAS AF2100
🇺🇸 US 🇨🇦 CA
All Vehicles10yr/300k mi
Fitment notes — PRESTONE AF2100
All Vehicles10yr/300k mi1 GallonExtended Life
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PEAK Fits: 1.3L L4 ELECTRIC/GAS PKP1GAL
🇺🇸 US 🇨🇦 CA
All Vehicles Antifreeze1 Gallon
Fitment notes — PEAK PKP1GAL
All Vehicles Antifreeze1 GallonPREMIUM1 GALLON10X MORE SCALE FIGHTING INHIBITORS10 YEAR/300K MILES
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PEAK Fits: 1.3L L4 ELECTRIC/GAS PXA1GAL
🇺🇸 US 🇨🇦 CA
Global Lifetime1 Gallon
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PRESTONE Fits: 1.3L L4 ELECTRIC/GAS AF6310
🇺🇸 US 🇨🇦 CA
MAX Original EquipmentAsian Blue
Fitment notes — PRESTONE AF6310
MAX Original EquipmentAsian Blue1 Gallon
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PRESTONE Fits: 1.3L L4 ELECTRIC/GAS AFMAX
🇺🇸 US 🇨🇦 CA
Max Universal1 Gallon
Fitment notes — PRESTONE AFMAX
Max Universal1 Gallon15 Year/350k Miles
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Standard Replacement

Brand Part Number Markets Notes Buy
VALVOLINE Popular Fits: 1.3L L4 ELECTRIC/GAS 861398
🇺🇸 US 🇨🇦 CA
Asian Vehicle Blue1 Gallon
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AISIN Fits: 1.3L L4 ELECTRIC/GAS ACB003
🇺🇸 US 🇨🇦 CA
BlueHOAT
Fitment notes — AISIN ACB003
BlueHOAT
(Type: Prediluted)
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BECK/ARNLEY Fits: 1.3L L4 ELECTRIC/GAS 2521501
🇺🇸 US 🇨🇦 CA
Premium Extra Life BlueAsian
Fitment notes — BECK/ARNLEY 2521501
Premium Extra Life BlueAsianPOAT
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BECK/ARNLEY Fits: 1.3L L4 ELECTRIC/GAS 2521001
🇺🇸 US 🇨🇦 CA
Premium Green1 Gallon
Fitment notes — BECK/ARNLEY 2521001
Premium Green1 GallonPOAT
252-1501 Blue premix Can be used with or In place of Green
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PEAK Fits: 1.3L L4 ELECTRIC/GAS PAB1GAL
🇺🇸 US 🇨🇦 CA
OET Asian Extended Life Blue1 Gallon
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PENTOSIN Fits: 1.3L L4 ELECTRIC/GAS 8115207
🇺🇸 US 🇨🇦 CA
Pentofrost A31 Gallon
Fitment notes — PENTOSIN 8115207
Pentofrost A31 GallonBluePOAT
(Type: Prediluted)
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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.

Coolant Reservoir

Brand Part Number Markets Notes Buy
TECHPRO Fits: 1.3L L4 ELECTRIC/GAS HO3014109
🇺🇸 US 🇨🇦 CA
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TECHPRO Fits: 1.3L L4 ELECTRIC/GAS HO3014117
🇺🇸 US 🇨🇦 CA
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This table covers the overflow / expansion tanks that hold extra coolant.

Coolant Reservoir Cap

Brand Part Number Markets Notes Buy
CALORSTAT Fits: 1.3L L4 ELECTRIC/GAS RC0207
🇺🇸 US 🇨🇦 CA
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DORMAN Fits: 1.3L L4 ELECTRIC/GAS 54227
🇺🇸 US 🇨🇦 CA
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MOTORAD Fits: 1.3L L4 ELECTRIC/GAS T165
🇺🇸 US 🇨🇦 CA
Standard
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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.

Cooling Fan Control Module

Brand Part Number Markets Notes Buy
US MOTOR WORKS Fits: 1.3L L4 ELECTRIC/GAS 16749
🇺🇸 US 🇨🇦 CA
Econo Control
Fitment notes — US MOTOR WORKS 16749
Econo Control
Requires 16763 Single Relay Harness
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US MOTOR WORKS Fits: 1.3L L4 ELECTRIC/GAS 16789
🇺🇸 US 🇨🇦 CA
Better Control
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US MOTOR WORKS Fits: 1.3L L4 ELECTRIC/GAS 16795
🇺🇸 US 🇨🇦 CA
Best Control
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This table covers the Cooling Fan control modules.

Cooling System Tester Adapter

Brand Part Number Markets Notes Buy
GATES Fits: 1.3L L4 ELECTRIC/GAS 31409
🇺🇸 US 🇨🇦 CA
Cooling System Pressure
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MOTORAD Fits: 1.3L L4 ELECTRIC/GAS 3124
🇺🇸 US 🇨🇦 CA
StandardRadiator Cap Adapter
Fitment notes — MOTORAD 3124
StandardRadiator Cap Adapter
Cooling System PressureRadiator Cap Adapter
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MOTORAD Fits: 1.3L L4 ELECTRIC/GAS 3125
🇺🇸 US 🇨🇦 CA
Standard
Fitment notes — MOTORAD 3125
Standard
Cooling System Pressure
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This table covers the adapters used to pressure-test this cooling system.

Radiator

Economy

Brand Part Number Markets Notes Buy
ULTRA-POWER Fits: 1.3L L4 ELECTRIC/GAS 2572
🇺🇸 US 🇨🇦 CA
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Standard Replacement

Brand Part Number Markets Notes Buy
CSF Popular Fits: 1.3L L4 ELECTRIC/GAS 2978
🇺🇸 US 🇨🇦 CA
1 RowPlastic Tank / Aluminum Core
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TYC Popular Fits: 1.3L L4 ELECTRIC/GAS 2572
🇺🇸 US 🇨🇦 CA
PRIMARY
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AGILITY Fits: 1.3L L4 ELECTRIC/GAS 8012572
🇺🇸 US 🇨🇦 CA
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FVP Fits: 1.3L L4 ELECTRIC/GAS RAD2572
🇺🇸 US 🇨🇦 CA
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OSC Fits: 1.3L L4 ELECTRIC/GAS 2572
🇺🇸 US 🇨🇦 CA
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UAC Fits: 1.3L L4 ELECTRIC/GAS RA2572C
🇺🇸 US 🇨🇦 CA
Downflow
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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.

Radiator Cap

Locking Replacement

Brand Part Number Markets Notes Buy
MOTORAD Fits: 1.3L L4 ELECTRIC/GAS ST37
🇺🇸 US 🇨🇦 CA
Safety LeverIndicator Markings Color: Silver
Fitment notes — MOTORAD ST37
Safety LeverIndicator Markings Color: Silver
Relief Pressure 16 lbs
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Standard Replacement

Brand Part Number Markets Notes Buy
GATES Popular Fits: 1.3L L4 ELECTRIC/GAS 31412
🇺🇸 US 🇨🇦 CA
OE Type
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CALORSTAT Fits: 1.3L L4 ELECTRIC/GAS RC0040
🇺🇸 US 🇨🇦 CA
Includes 2 sealsMetallic
Fitment notes — CALORSTAT RC0040
Includes 2 sealsMetallicDegassing function
PSI - 20.0
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MOTORAD Fits: 1.3L L4 ELECTRIC/GAS T37
🇺🇸 US 🇨🇦 CA
StandardIncludes Hose
Fitment notes — MOTORAD T37
StandardIncludes HoseIndicator Markings Color: Red, White, Yellow
Relief Pressure 16 lbs
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SKP Fits: 1.3L L4 ELECTRIC/GAS SK10242
🇺🇸 US 🇨🇦 CA
16 psi Pressure Rating
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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.

Buying Cooling System Parts for a 2004 Honda Civic

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. Every cooling system part here is 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 Radiator .

Frequently Asked Questions

How many cooling system parts fit the 2004 Honda Civic?

Our catalog currently lists 38 cooling system parts for the 2004 Honda Civic across 7 subcategories and 20 brands, covering all 4 engine options (1.3L L4 ELECTRIC/GAS, 1.7L L4, 1.7L L4 CNG and 2.0L L4). Each part is matched to the engine(s) it fits.

Do cooling system parts differ between 2004 Honda Civic engines?

Yes. Every cooling system part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2004 Honda Civic?

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 2004 Honda Civic 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 2004 Honda Civic?

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 2004 Honda Civic

Cooling System Parts for Other Honda Civic Years

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