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.
The 2004 Honda Civic was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2004 Honda Civic cooling system parts are PRESTONE (5 parts), MOTORAD (5 parts) and PEAK (4 parts), plus 17 more brands. Quality grades include Standard Replacement, Premium and Economy.
6 parts on this 2004 Honda Civic page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and CSF 2978 (Radiator). 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: 1.3L L4 ELECTRIC/GAS | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular Fits: 1.3L L4 ELECTRIC/GAS | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PEAK Fits: 1.3L L4 ELECTRIC/GAS | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE Fits: 1.3L L4 ELECTRIC/GAS | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: 1.3L L4 ELECTRIC/GAS | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: 1.3L L4 ELECTRIC/GAS | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: 1.3L L4 ELECTRIC/GAS | PXA1GAL | 🇺🇸 US 🇨🇦 CA | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: 1.3L L4 ELECTRIC/GAS | AF6310 | 🇺🇸 US 🇨🇦 CA | MAX Original EquipmentAsian Blue | View on Amazon |
| PRESTONE Fits: 1.3L L4 ELECTRIC/GAS | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 1.3L L4 ELECTRIC/GAS | 861398 | 🇺🇸 US 🇨🇦 CA | Asian Vehicle Blue1 Gallon | View on Amazon |
| AISIN Fits: 1.3L L4 ELECTRIC/GAS | ACB003 | 🇺🇸 US 🇨🇦 CA | BlueHOAT | View on Amazon |
| BECK/ARNLEY Fits: 1.3L L4 ELECTRIC/GAS | 2521501 | 🇺🇸 US 🇨🇦 CA | Premium Extra Life BlueAsian | View on Amazon |
| BECK/ARNLEY Fits: 1.3L L4 ELECTRIC/GAS | 2521001 | 🇺🇸 US 🇨🇦 CA | Premium Green1 Gallon | View on Amazon |
| PEAK Fits: 1.3L L4 ELECTRIC/GAS | PAB1GAL | 🇺🇸 US 🇨🇦 CA | OET Asian Extended Life Blue1 Gallon | View on Amazon |
| PENTOSIN Fits: 1.3L L4 ELECTRIC/GAS | 8115207 | 🇺🇸 US 🇨🇦 CA | Pentofrost A31 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 2004 Honda Civic come from 7 brands — PRESTONE, PEAK, BECK/ARNLEY and 4 other brands. The "Popular" part is FVP MV5050GAL.
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 FVP, PEAK and PRESTONE — 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, BECK/ARNLEY, VALVOLINE, AISIN and 2 other brands supply 6 parts: built to original-equipment specification. A representative part number is VALVOLINE 861398.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: 1.3L L4 ELECTRIC/GAS | HO3014109 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO Fits: 1.3L L4 ELECTRIC/GAS | HO3014117 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
TECHPRO supplies both parts for the 2004 Honda Civic.
Part numbers include TECHPRO HO3014109 and TECHPRO HO3014117.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: 1.3L L4 ELECTRIC/GAS | RC0207 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DORMAN Fits: 1.3L L4 ELECTRIC/GAS | 54227 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOTORAD Fits: 1.3L L4 ELECTRIC/GAS | T165 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
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.
3 Coolant Reservoir Cap parts are listed for the 2004 Honda Civic, from CALORSTAT, DORMAN and MOTORAD.
Part numbers include CALORSTAT RC0207, DORMAN 54227 and MOTORAD T165.
Cooling Fan Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS Fits: 1.3L L4 ELECTRIC/GAS | 16749 | 🇺🇸 US 🇨🇦 CA | Econo Control | View on Amazon |
| US MOTOR WORKS Fits: 1.3L L4 ELECTRIC/GAS | 16789 | 🇺🇸 US 🇨🇦 CA | Better Control | View on Amazon |
| US MOTOR WORKS Fits: 1.3L L4 ELECTRIC/GAS | 16795 | 🇺🇸 US 🇨🇦 CA | Best Control | View on Amazon |
This table covers the Cooling Fan control modules.
US MOTOR WORKS supplies the 3 Cooling Fan Control Module parts for the 2004 Honda Civic.
Part numbers include US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Fits: 1.3L L4 ELECTRIC/GAS | 31409 | 🇺🇸 US 🇨🇦 CA | Cooling System Pressure | View on Amazon |
| MOTORAD Fits: 1.3L L4 ELECTRIC/GAS | 3124 | 🇺🇸 US 🇨🇦 CA | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD Fits: 1.3L L4 ELECTRIC/GAS | 3125 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
3 Cooling System Tester Adapter parts for the 2004 Honda Civic come from 2 brands — MOTORAD and GATES.
This group includes GATES 31409, MOTORAD 3124 and MOTORAD 3125.
Radiator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 1.3L L4 ELECTRIC/GAS | 2572 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CSF Popular Fits: 1.3L L4 ELECTRIC/GAS | 2978 | 🇺🇸 US 🇨🇦 CA | 1 RowPlastic Tank / Aluminum Core | View on Amazon |
| TYC Popular Fits: 1.3L L4 ELECTRIC/GAS | 2572 | 🇺🇸 US 🇨🇦 CA | PRIMARY | View on Amazon |
| AGILITY Fits: 1.3L L4 ELECTRIC/GAS | 8012572 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 1.3L L4 ELECTRIC/GAS | RAD2572 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| OSC Fits: 1.3L L4 ELECTRIC/GAS | 2572 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UAC Fits: 1.3L L4 ELECTRIC/GAS | RA2572C | 🇺🇸 US 🇨🇦 CA | Downflow | 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.
7 Radiator parts for the 2004 Honda Civic come from 7 brands — ULTRA-POWER, CSF, TYC and 4 other brands. The "Popular" part is CSF 2978.
The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER 2572 is listed in this group.
Standard Replacement: 6 parts, from CSF, TYC, AGILITY and 3 other brands. A representative part number is CSF 2978.
Part numbers include CSF 2978 and ULTRA-POWER 2572, among others listed above.
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 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 1.3L L4 ELECTRIC/GAS | 31412 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| CALORSTAT Fits: 1.3L L4 ELECTRIC/GAS | RC0040 | 🇺🇸 US 🇨🇦 CA | Includes 2 sealsMetallic | View on Amazon |
| MOTORAD Fits: 1.3L L4 ELECTRIC/GAS | T37 | 🇺🇸 US 🇨🇦 CA | StandardIncludes Hose | View on Amazon |
| SKP Fits: 1.3L L4 ELECTRIC/GAS | SK10242 | 🇺🇸 US 🇨🇦 CA | 16 psi Pressure Rating | 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.
5 Radiator Cap parts for the 2004 Honda Civic come from 4 brands — MOTORAD, GATES, CALORSTAT and 1 other brand. The "Popular" part is GATES 31412.
In the Locking Replacement grade, MOTORAD supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST37.
Standard Replacement: 4 parts, from GATES, CALORSTAT, MOTORAD and 1 other brand. A representative part number is GATES 31412.
Part numbers include GATES 31412, MOTORAD ST37 and CALORSTAT RC0040, among others listed above.
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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