2004 Buick Century Cooling System Parts

Engine:
3.1L V6

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.

Coolant / Antifreeze

Compatible With All Colors

Brand Part Number Markets Notes Buy
PRESTONE 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 MV5050GAL
🇺🇸 US 🇨🇦 CA
Extended LifeAll Makes / All Models
Fitment notes — FVP MV5050GAL
Extended LifeAll Makes / All Models1 Gallon
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PEAK BQA1GAL
🇺🇸 US 🇨🇦 CA
Blue Mountain Long LifeAll Vehicle
Fitment notes — PEAK BQA1GAL
Blue Mountain Long LifeAll Vehicle1 Gallon
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PRESTONE AF3100
🇺🇸 US 🇨🇦 CA
Prime Yellow - All VehiclesExtended Life
Fitment notes — PRESTONE AF3100
Prime Yellow - All VehiclesExtended Life1 Gallon
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VALVOLINE 719009
🇺🇸 US 🇨🇦 CA
Multi-Vehicle Yellow1 Gallon
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Premium

Brand Part Number Markets Notes Buy
PRESTONE Popular AF2100
🇺🇸 US 🇨🇦 CA
All Vehicles10yr/300k mi
Fitment notes — PRESTONE AF2100
All Vehicles10yr/300k mi1 GallonExtended Life
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PEAK 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 PXA1GAL
🇺🇸 US 🇨🇦 CA
1 GallonGlobal Lifetime
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PRESTONE 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
ACDELCO Popular 105027
🇺🇸 US 🇨🇦 CA
DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon
Fitment notes — ACDELCO 105027
DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 GallonPremix1 Gallon GM Original EquipmentOrange
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VALVOLINE Popular ZXEL1
🇺🇸 US 🇨🇦 CA
Dex-Cool Orange1 Gallon
Fitment notes — VALVOLINE ZXEL1
Dex-Cool Orange1 GallonOAT
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AISIN ACD005
🇺🇸 US 🇨🇦 CA
OrangeOAT
Fitment notes — AISIN ACD005
OrangeOAT
(Type: Prediluted)
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FVP DEX5050GAL
🇺🇸 US 🇨🇦 CA
Extended Life Blend1 Gallon
Fitment notes — FVP DEX5050GAL
Extended Life Blend1 GallonOrangeOAT
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PRESTONE AF3400
🇺🇸 US 🇨🇦 CA
Prime OrangeOrange Compatible
Fitment notes — PRESTONE AF3400
Prime OrangeOrange CompatibleExtended Life1 Gallon ConcentrateOAT
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PRESTONE AF850
🇺🇸 US 🇨🇦 CA
DEX-Cool Extended Life1 Gallon
Fitment notes — PRESTONE AF850
DEX-Cool Extended Life1 GallonOrangeOAT
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VALVOLINE 888374
🇺🇸 US 🇨🇦 CA
American Vehicle Orange1 Gallon
Fitment notes — VALVOLINE 888374
American Vehicle Orange1 Gallon
(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 Air Bleeder

Brand Part Number Markets Notes Buy
DORMAN 902112
🇺🇸 US 🇨🇦 CA
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This table covers the bleeders used to purge air from the coolant circuit.

Coolant Hose / Pipe

Brand Part Number Markets Notes Buy
ACDELCO Popular 14156S
🇺🇸 US 🇨🇦 CA
Professional / GoldMolded
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GATES Popular 19026
🇺🇸 US 🇨🇦 CA
Molded19/32" x 6"
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CONTINENTAL 63121
🇺🇸 US 🇨🇦 CA
Molded
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DAYCO 71692
🇺🇸 US 🇨🇦 CA
Curved
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GM GENUINE 10182356
🇺🇸 US 🇨🇦 CA
Thermostat To Pipe
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GM GENUINE 12590279
🇺🇸 US 🇨🇦 CA
Part of Lower IntakeUse Sealant 19332211 (USA) or 10953488 (Canada)
Fitment notes — GM GENUINE 12590279
Part of Lower IntakeUse Sealant 19332211 (USA) or 10953488 (Canada)Thermostat Bypass
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This table covers the hard pipes and extra hoses in the coolant circuit.

Coolant Hose / Pipe Seal

Brand Part Number Markets Notes Buy
APEX ADM1403
🇺🇸 US 🇨🇦 CA
Bypass pipe
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FEL-PRO 70799
🇺🇸 US 🇨🇦 CA
O-Ring Type
Fitment notes — FEL-PRO 70799
O-Ring Type
Bypass pipe
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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.

Coolant Reservoir

Brand Part Number Markets Notes Buy
DORMAN Popular 603033
🇺🇸 US 🇨🇦 CA
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GM GENUINE 10333858
🇺🇸 US 🇨🇦 CA
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GPD 2411209
🇺🇸 US 🇨🇦 CA
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SKP SK603033
🇺🇸 US 🇨🇦 CA
Front
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TECHPRO GM3014106
🇺🇸 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
DORMAN 82724
🇺🇸 US 🇨🇦 CA
Snap On Cap
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MOTORAD T167
🇺🇸 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.

Coolant Reservoir Retainer / Clip

Brand Part Number Markets Notes Buy
GM GENUINE 10427340
🇺🇸 US 🇨🇦 CA
LowerCustom
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This table covers the Coolant Reservoir retainers and clips.

Cooling Fan Control Module

Brand Part Number Markets Notes Buy
US MOTOR WORKS 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 16789
🇺🇸 US 🇨🇦 CA
Better Control
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US MOTOR WORKS 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
ACDELCO 12A01
🇺🇸 US 🇨🇦 CA
ProfessionalIncluded In Tester
Fitment notes — ACDELCO 12A01
ProfessionalIncluded In Tester
Cooling System PressureRadiator Cap Adapter
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GATES 31413
🇺🇸 US 🇨🇦 CA
Cooling System PressureRadiator Cap
Fitment notes — GATES 31413
Cooling System PressureRadiator CapSystem Adapter on Tester
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MOTORAD 3003
🇺🇸 US 🇨🇦 CA
StandardIncluded In Tester Kit
Fitment notes — MOTORAD 3003
StandardIncluded In Tester KitRadiator Cap Adapter
Cooling System PressureRadiator Cap Adapter
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This table covers the adapters used to pressure-test this cooling system.

Radiator

Brand Part Number Markets Notes Buy
SPECTRA PREMIUM Popular CU2343
🇺🇸 US 🇨🇦 CA
0.625 IN Core Thickness
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TYC Popular 2343
🇺🇸 US 🇨🇦 CA
PRIMARY
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AGILITY 8012343
🇺🇸 US 🇨🇦 CA
View on
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DENSO 2219009
🇺🇸 US 🇨🇦 CA
View on
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FVP RAD2343
🇺🇸 US 🇨🇦 CA
View on
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KOYORAD A2343
🇺🇸 US 🇨🇦 CA
without Supercharger
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OSC 2343
🇺🇸 US 🇨🇦 CA
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UAC RA2343C
🇺🇸 US 🇨🇦 CA
View on
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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 Popular ST16V
🇺🇸 US 🇨🇦 CA
Safety Lever
Fitment notes — MOTORAD ST16V
Safety Lever
Relief Pressure 16 lbs
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GATES 31516
🇺🇸 US 🇨🇦 CA
Safety Release Radiator Cap
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Standard Replacement

Brand Part Number Markets Notes Buy
GATES Popular 31523
🇺🇸 US 🇨🇦 CA
OE Type
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ACDELCO RC96
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO RC96
GM Original Equipment
with DEX-Cool LabelMetal
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MOTORAD T16V
🇺🇸 US 🇨🇦 CA
Standard
Fitment notes — MOTORAD T16V
Standard
Relief Pressure 16 lbs
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SKP SK10231
🇺🇸 US 🇨🇦 CA
Pressure Rating 16 psi
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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.

Radiator Drain Petcock

Brand Part Number Markets Notes Buy
DORMAN 61136
🇺🇸 US 🇨🇦 CA
Screw-in with O-ring. M15-1.5
Fitment notes — DORMAN 61136
Screw-in with O-ring. M15-1.5
PlasticScrew-In Type
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This table covers the petcocks used to drain the radiator.

Radiator Fan Assembly

Economy

Brand Part Number Markets Notes Buy
DORMAN Popular 620613
🇺🇸 US 🇨🇦 CA
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GPD 2811514
🇺🇸 US 🇨🇦 CA
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TECHPRO GM3115129
🇺🇸 US 🇨🇦 CA
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
AGILITY 6012107
🇺🇸 US 🇨🇦 CA
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FOUR SEASONS 75259
🇺🇸 US 🇨🇦 CA
View on
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UAC FA50517C
🇺🇸 US 🇨🇦 CA
Radiator-Condenser Fan Assembly
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UAC FA50210C
🇺🇸 US 🇨🇦 CA
View on
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VDO / CONTINENTAL FA70157
🇺🇸 US 🇨🇦 CA
View on
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This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.

Radiator Fan Motor

Brand Part Number Markets Notes Buy
FOUR SEASONS Popular 35656
🇺🇸 US 🇨🇦 CA
Left
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GPD Popular 2311317
🇺🇸 US 🇨🇦 CA
Driver Side
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FOUR SEASONS 35389
🇺🇸 US 🇨🇦 CA
Right
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TYC 630070
🇺🇸 US 🇨🇦 CA
Fits Right
Fitment notes — TYC 630070
Fits:
Right
or:
Left
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VDO / CONTINENTAL PM540
🇺🇸 US 🇨🇦 CA
Mounting Method: Flange MountedRotation: Clockwise (Right)
Fitment notes — VDO / CONTINENTAL PM540
Mounting Method: Flange MountedRotation: Clockwise (Right)
Passenger Side
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VDO / CONTINENTAL PM538
🇺🇸 US 🇨🇦 CA
Motor Diameter: 3.250 In
Fitment notes — VDO / CONTINENTAL PM538
Motor Diameter: 3.250 In
Driver Side
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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.

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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