68 Cooling system parts are listed for the 2004 Buick Century, in 14 part types, covering the 3.1L V6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The cooling system system on the 2004 Buick Century keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. The largest groups are Coolant / Antifreeze (16 parts), Radiator (8 parts) and Radiator Fan Assembly (8 parts). The other 11 part types cover the remaining 36 parts.
Every part on this page is matched to the 3.1L V6 — the only engine offered in the 2004 Buick Century.
The most listed brands for 2004 Buick Century cooling system parts are PRESTONE (6 parts), DORMAN (5 parts) and ACDELCO (4 parts), plus 24 more brands. Quality grades include Standard Replacement, Economy and Premium.
14 parts on this 2004 Buick Century page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and ACDELCO 14156S (Coolant Hose / Pipe). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PEAK | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK | PXA1GAL | 🇺🇸 US 🇨🇦 CA | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 105027 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon | View on Amazon |
| VALVOLINE Popular | ZXEL1 | 🇺🇸 US 🇨🇦 CA | Dex-Cool Orange1 Gallon | View on Amazon |
| AISIN | ACD005 | 🇺🇸 US 🇨🇦 CA | OrangeOAT | View on Amazon |
| FVP | DEX5050GAL | 🇺🇸 US 🇨🇦 CA | Extended Life Blend1 Gallon | View on Amazon |
| PRESTONE | AF3400 | 🇺🇸 US 🇨🇦 CA | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE | AF850 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended Life1 Gallon | View on Amazon |
| VALVOLINE | 888374 | 🇺🇸 US 🇨🇦 CA | American Vehicle Orange1 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.
16 Coolant / Antifreeze parts for the 2004 Buick Century come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 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 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 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, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.
Coolant Air Bleeder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 902112 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the bleeders used to purge air from the coolant circuit.
One part is listed for the 2004 Buick Century — DORMAN 902112.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 14156S | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| GATES Popular | 19026 | 🇺🇸 US 🇨🇦 CA | Molded19/32" x 6" | View on Amazon |
| CONTINENTAL | 63121 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO | 71692 | 🇺🇸 US 🇨🇦 CA | Curved | View on Amazon |
| GM GENUINE | 10182356 | 🇺🇸 US 🇨🇦 CA | Thermostat To Pipe | View on Amazon |
| GM GENUINE | 12590279 | 🇺🇸 US 🇨🇦 CA | Part of Lower IntakeUse Sealant 19332211 (USA) or 10953488 (Canada) | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
6 Coolant Hose / Pipe parts for the 2004 Buick Century come from 5 brands — GM GENUINE, ACDELCO, GATES and 2 other brands. The "Popular" part is ACDELCO 14156S.
Listed part numbers: ACDELCO 14156S, GATES 19026 and CONTINENTAL 63121, plus the other parts above.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX | ADM1403 | 🇺🇸 US 🇨🇦 CA | Bypass pipe | View on Amazon |
| FEL-PRO | 70799 | 🇺🇸 US 🇨🇦 CA | O-Ring Type | View on Amazon |
This table covers the seals at the Coolant Hose / Pipe. 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.
2 Coolant Hose / Pipe Seal parts are listed for the 2004 Buick Century, from APEX and FEL-PRO.
This group includes APEX ADM1403 and FEL-PRO 70799.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 603033 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE | 10333858 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD | 2411209 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP | SK603033 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| TECHPRO | GM3014106 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
5 Coolant Reservoir parts are listed for the 2004 Buick Century, from DORMAN, GM GENUINE, GPD and 2 other brands. DORMAN 603033 carries the "Popular" badge.
This group includes DORMAN 603033, GM GENUINE 10333858 and GPD 2411209 and the remaining parts above.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 82724 | 🇺🇸 US 🇨🇦 CA | Snap On Cap | View on Amazon |
| MOTORAD | T167 | 🇺🇸 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.
2 Coolant Reservoir Cap parts are listed for the 2004 Buick Century, from DORMAN and MOTORAD.
Part numbers include DORMAN 82724 and MOTORAD T167.
Coolant Reservoir Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 10427340 | 🇺🇸 US 🇨🇦 CA | LowerCustom | View on Amazon |
This table covers the Coolant Reservoir retainers and clips.
This group shows a single part: GM GENUINE 10427340.
Cooling Fan Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS | 16749 | 🇺🇸 US 🇨🇦 CA | Econo Control | View on Amazon |
| US MOTOR WORKS | 16789 | 🇺🇸 US 🇨🇦 CA | Better Control | View on Amazon |
| US MOTOR WORKS | 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 Buick Century.
Listed part numbers: US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 12A01 | 🇺🇸 US 🇨🇦 CA | ProfessionalIncluded In Tester | View on Amazon |
| GATES | 31413 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD | 3003 | 🇺🇸 US 🇨🇦 CA | StandardIncluded In Tester Kit | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
3 Cooling System Tester Adapter parts for the 2004 Buick Century come from 3 brands — ACDELCO, GATES and MOTORAD.
Listed part numbers: ACDELCO 12A01, GATES 31413 and MOTORAD 3003.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Popular | CU2343 | 🇺🇸 US 🇨🇦 CA | 0.625 IN Core Thickness | View on Amazon |
| TYC Popular | 2343 | 🇺🇸 US 🇨🇦 CA | PRIMARY | View on Amazon |
| AGILITY | 8012343 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 2219009 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP | RAD2343 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| KOYORAD | A2343 | 🇺🇸 US 🇨🇦 CA | without Supercharger | View on Amazon |
| OSC | 2343 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UAC | RA2343C | 🇺🇸 US 🇨🇦 CA | 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.
8 Radiator parts for the 2004 Buick Century come from 8 brands — SPECTRA PREMIUM, TYC, AGILITY and 5 other brands. The "Popular" part is SPECTRA PREMIUM CU2343.
Part numbers include SPECTRA PREMIUM CU2343, TYC 2343 and AGILITY 8012343, among others listed above.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular | ST16V | 🇺🇸 US 🇨🇦 CA | Safety Lever | View on Amazon |
| GATES | 31516 | 🇺🇸 US 🇨🇦 CA | Safety Release Radiator Cap | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 31523 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| ACDELCO | RC96 | 🇺🇸 US 🇨🇦 CA | GM Original Equipment | View on Amazon |
| MOTORAD | T16V | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| SKP | SK10231 | 🇺🇸 US 🇨🇦 CA | Pressure Rating 16 psi | 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.
6 Radiator Cap parts for the 2004 Buick Century come from 4 brands — MOTORAD, GATES, ACDELCO and 1 other brand. The "Popular" part is MOTORAD ST16V.
In the Locking Replacement grade, MOTORAD and GATES supply 2 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST16V.
Standard Replacement: 4 parts, from GATES, ACDELCO, MOTORAD and 1 other brand. A representative part number is GATES 31523.
This group includes MOTORAD ST16V, GATES 31516 and GATES 31523 and the remaining parts above.
Radiator Drain Petcock
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 61136 | 🇺🇸 US 🇨🇦 CA | Screw-in with O-ring. M15-1.5 | View on Amazon |
This table covers the petcocks used to drain the radiator.
One part is listed for the 2004 Buick Century — DORMAN 61136.
Radiator Fan Assembly
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 620613 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD | 2811514 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TECHPRO | GM3115129 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AGILITY | 6012107 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FOUR SEASONS | 75259 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UAC | FA50517C | 🇺🇸 US 🇨🇦 CA | Radiator-Condenser Fan Assembly | View on Amazon |
| UAC | FA50210C | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VDO / CONTINENTAL | FA70157 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
8 Radiator Fan Assembly parts are listed for the 2004 Buick Century, from UAC, DORMAN, GPD and 4 other brands. DORMAN 620613 carries the "Popular" badge.
Economy: 3 parts, from DORMAN, GPD and TECHPRO. A representative part number is DORMAN 620613.
The Standard Replacement section: 5 options from UAC, AGILITY, FOUR SEASONS and 1 other brand. AGILITY 6012107 is listed in this group.
This group includes DORMAN 620613, GPD 2811514 and TECHPRO GM3115129 and the remaining parts above.
Radiator Fan Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Popular | 35656 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| GPD Popular | 2311317 | 🇺🇸 US 🇨🇦 CA | Driver Side | View on Amazon |
| FOUR SEASONS | 35389 | 🇺🇸 US 🇨🇦 CA | Right | View on Amazon |
| TYC | 630070 | 🇺🇸 US 🇨🇦 CA | Fits Right | View on Amazon |
| VDO / CONTINENTAL | PM540 | 🇺🇸 US 🇨🇦 CA | Mounting Method: Flange MountedRotation: Clockwise (Right) | View on Amazon |
| VDO / CONTINENTAL | PM538 | 🇺🇸 US 🇨🇦 CA | Motor Diameter: 3.250 In | View on Amazon |
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.
6 Radiator Fan Motor parts for the 2004 Buick Century come from 4 brands — FOUR SEASONS, VDO / CONTINENTAL, GPD and 1 other brand. The "Popular" part is FOUR SEASONS 35656.
Listed part numbers: FOUR SEASONS 35656, GPD 2311317 and FOUR SEASONS 35389, plus the other parts above.
Buying Cooling System Parts for a 2004 Buick Century
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.
- Confirm you have the 3.1L V6 engine — every part on this page is matched to it.
- 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 Buick Century?
Our catalog currently lists 68 cooling system parts for the 2004 Buick Century across 14 subcategories and 27 brands, covering the 3.1L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2004 Buick Century?
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 Buick Century 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 Buick Century?
Every part on this page is matched to the 3.1L V6 engine. 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 Buick Century
Cooling System Parts for Other Buick Century Years
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