2005 Buick Century 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

16 Coolant / Antifreeze parts are listed for the 2005 Buick Century, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 7 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

This table covers the bleeders used to purge air from the coolant circuit. Read more

This group shows a single part: DORMAN 902112.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

6 Coolant Hose / Pipe parts are listed for the 2005 Buick Century, from GM GENUINE, ACDELCO, GATES and 2 other brands. ACDELCO 14156S carries the "Popular" badge.

This group includes ACDELCO 14156S, GATES 19026 and CONTINENTAL 63121 and the remaining parts above.

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. Read more

2 Coolant Hose / Pipe Seal parts for the 2005 Buick Century come from 2 brands — APEX and FEL-PRO.

This group includes APEX ADM1403 and FEL-PRO 70799.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

4 Coolant Reservoir parts for the 2005 Buick Century come from 4 brands — DORMAN, GM GENUINE, GPD and 1 other brand.

Listed part numbers: DORMAN 603033, GM GENUINE 10333858 and GPD 2411209, plus the other parts above.

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

2 Coolant Reservoir Cap parts for the 2005 Buick Century come from 2 brands — DORMAN and MOTORAD.

This group includes DORMAN 82724 and MOTORAD T167.

This table covers the Coolant Reservoir retainers and clips. Read more

One part is listed for the 2005 Buick Century — GM GENUINE 10427340.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 2005 Buick Century come from US MOTOR WORKS.

This group includes US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.

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

3 Cooling System Tester Adapter parts are listed for the 2005 Buick Century, from ACDELCO, GATES and MOTORAD.

Part numbers include ACDELCO 12A01, GATES 31413 and MOTORAD 3003.

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

8 Radiator parts are listed for the 2005 Buick Century, from GPD, KOYORAD, SPECTRA PREMIUM and 5 other brands. KOYORAD A2343 carries the "Popular" badge.

Economy: 1 part, from GPD. A representative part number is GPD 2343C.

The Standard Replacement section: 7 options from KOYORAD, SPECTRA PREMIUM, AGILITY and 4 other brands. KOYORAD A2343 is listed in this group.

Listed part numbers: KOYORAD A2343, GPD 2343C and SPECTRA PREMIUM CU2343, plus the other parts above.

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

6 Radiator Cap parts are listed for the 2005 Buick Century, from MOTORAD, GATES, ACDELCO and 1 other brand. MOTORAD ST16V carries the "Popular" badge.

The Locking Replacement section lists 2 options from MOTORAD and GATES — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST16V is listed in this group.

The Standard Replacement section: 4 options from GATES, ACDELCO, MOTORAD and 1 other brand. GATES 31523 is listed in this group.

Listed part numbers: MOTORAD ST16V, GATES 31516 and GATES 31523, plus the other parts above.

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

This group shows a single part: DORMAN 61136.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

7 Radiator Fan Assembly parts for the 2005 Buick Century come from 7 brands — DORMAN, GPD, TECHPRO and 4 other brands. The "Popular" part is DORMAN 620613.

The Economy section: 3 options from DORMAN, GPD and TECHPRO. DORMAN 620613 is listed in this group.

Standard Replacement: 4 parts, from AGILITY, FOUR SEASONS, UAC and 1 other brand. A representative part number is AGILITY 6012107.

Part numbers include DORMAN 620613, GPD 2811514 and TECHPRO GM3115129, among others listed above.

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

6 Radiator Fan Motor parts are listed for the 2005 Buick Century, from FOUR SEASONS, VDO / CONTINENTAL, GPD and 1 other brand. FOUR SEASONS 35656 carries the "Popular" badge.

Part numbers include FOUR SEASONS 35656, GPD 2311317 and FOUR SEASONS 35389, among others listed above.

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

8 Radiator Hose parts for the 2005 Buick Century come from 4 brands — DAYCO, GATES, ACDELCO and 1 other brand. The "Popular" part is DAYCO 71850.

Listed part numbers: DAYCO 71850, GATES 22344 and ACDELCO 24377L, plus the other parts above.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

This group shows a single part: DORMAN 45814.

This table covers the Shroud Trim retainers and clips. Read more

One part is listed for the 2005 Buick Century — DORMAN 963094D.

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

21 Temperature Sender / Sensor parts are listed for the 2005 Buick Century, from STANDARD MOTOR PRODUCTS, NTK, WALKER PRODUCTS and 13 other brands. NTK EF0008 carries the "Popular" badge.

Economy: 8 parts, from NTK, STANDARD MOTOR PRODUCTS, GPD and 5 other brands. A representative part number is NTK EF0008.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191012.

The Standard Replacement section: 12 options from STANDARD MOTOR PRODUCTS, WELLS, ACDELCO and 7 other brands. ACDELCO 1551107 is listed in this group.

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

19 Thermostat parts for the 2005 Buick Century come from 6 brands — MOTORAD, CALORSTAT, GM GENUINE and 3 other brands. The "Popular" part is GATES 33329.

In the Heavy Duty grade, MOTORAD supplies 2 parts: rated for severe service. A representative part number is MOTORAD 5267195.

The Performance section lists 2 options from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2067180 is listed in this group.

Premium: 3 parts, from MOTORAD. A representative part number is MOTORAD 7267195.

Standard Replacement: 12 parts, from MOTORAD, CALORSTAT, GM GENUINE and 3 other brands. A representative part number is GATES 33329.

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

7 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2005 Buick Century, from MAHLE / CLEVITE, FEL-PRO, GATES and 3 other brands. FEL-PRO 35614 carries the "Popular" badge.

This group includes FEL-PRO 35614, GATES 33611 and APEX AWO2041 and the remaining parts above.

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

5 Thermostat Housing / Water Outlet parts for the 2005 Buick Century come from 5 brands — DORMAN, FAMOUS BRAND, GPD and 2 other brands. The "Popular" part is MOTORAD CH5166.

The Economy section: 3 options from DORMAN, FAMOUS BRAND and GPD. DORMAN 9022004 is listed in this group.

Standard Replacement: 2 parts, from MOTORAD and FOUR SEASONS. A representative part number is MOTORAD CH5166.

This group includes MOTORAD CH5166, DORMAN 9022004 and FAMOUS BRAND 85166 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

10 Water Pump parts for the 2005 Buick Century come from 10 brands — FVP, SKP, US MOTOR WORKS and 7 other brands. The "Popular" part is ACDELCO 252721.

The Economy section: 4 options from FVP, SKP, US MOTOR WORKS and 1 other brand. FVP US5033 is listed in this group.

Standard Replacement: 6 parts, from ACDELCO, GATES, AISIN and 3 other brands. A representative part number is ACDELCO 252721.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

6 Water Pump Gasket parts are listed for the 2005 Buick Century, from FEL-PRO, AJUSA, APEX and 3 other brands. FEL-PRO 35403 carries the "Popular" badge.

Part numbers include FEL-PRO 35403, AJUSA 01698800 and APEX AWP3010, among others listed above.

This table covers the Water Pump pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

One part is listed for the 2005 Buick Century — DORMAN 300933.

This table covers the Water Pump Stud kits. Read more

This group shows a single part: DORMAN 902806.