2005 Buick Lesabre 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 Lesabre, 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

4 Coolant Hose / Pipe parts are listed for the 2005 Buick Lesabre, from GM GENUINE, ACDELCO and DAYCO.

Part numbers include ACDELCO 18455L, DAYCO 88000 and GM GENUINE 12565082, among others listed 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

4 Coolant Hose / Pipe Seal parts for the 2005 Buick Lesabre come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 36021, GM GENUINE 1534066 and GM GENUINE 24502846 and the remaining parts above.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2005 Buick Lesabre — FOUR SEASONS 86500.

This table covers the Coolant Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

One part is listed for the 2005 Buick Lesabre — STANDARD MOTOR PRODUCTS FLS17.

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

This group shows a single part: TECHPRO GM3014104.

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

3 Coolant Reservoir Cap parts for the 2005 Buick Lesabre come from 3 brands — DORMAN, GM GENUINE and MOTORAD.

This group includes DORMAN 82594, GM GENUINE RC122 and MOTORAD T80.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 2005 Buick Lesabre 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 Lesabre, from ACDELCO, GATES and MOTORAD.

Listed part numbers: 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

12 Radiator parts are listed for the 2005 Buick Lesabre, from SPECTRA PREMIUM, FVP, OSC and 6 other brands. ULTRA-POWER 2347 carries the "Popular" badge.

Economy: 2 parts, from ULTRA-POWER and GPD. A representative part number is ULTRA-POWER 2347.

The Standard Replacement section: 10 options from SPECTRA PREMIUM, FVP, OSC and 4 other brands. SPECTRA PREMIUM CU2348 is listed in this group.

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 Lesabre, 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.

Part numbers include MOTORAD ST16V, GATES 31516 and GATES 31523, among others listed above.

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

6 Radiator Fan Assembly parts for the 2005 Buick Lesabre come from 6 brands — GPD, AGILITY, FOUR SEASONS and 3 other brands. The "Popular" part is AGILITY 6012101.

The Economy section: 1 option from GPD. GPD 2811490 is listed in this group.

Standard Replacement: 5 parts, from AGILITY, FOUR SEASONS, TYC and 2 other brands. A representative part number is AGILITY 6012101.

Listed part numbers: AGILITY 6012101, GPD 2811490 and FOUR SEASONS 75421, plus the other parts 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 Lesabre, from FOUR SEASONS, GPD and VDO / CONTINENTAL. FOUR SEASONS 35381 carries the "Popular" badge.

This group includes FOUR SEASONS 35381, FOUR SEASONS 35199 and GPD 2312123 and the remaining parts 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 Lesabre come from 4 brands — DAYCO, GATES, ACDELCO and 1 other brand. The "Popular" part is DAYCO 71952.

This group includes DAYCO 71952, GATES 22328 and ACDELCO 24372L and the remaining parts above.

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

23 Temperature Sender / Sensor parts are listed for the 2005 Buick Lesabre, from STANDARD MOTOR PRODUCTS, NTK, SKP and 14 other brands. NTK EF0008 carries the "Popular" badge.

Economy: 9 parts, from SKP, NTK, STANDARD MOTOR PRODUCTS 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: 13 options from STANDARD MOTOR PRODUCTS, WELLS, ACDELCO and 8 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

12 Thermostat parts for the 2005 Buick Lesabre come from 5 brands — MOTORAD, GATES, GM GENUINE and 2 other brands. The "Popular" part is MOTORAD 5239192.

In the Heavy Duty grade, MOTORAD supplies 2 parts: rated for severe service. A representative part number is MOTORAD 5239192.

Premium: 3 parts, from MOTORAD. A representative part number is MOTORAD 7239192.

Standard Replacement: 7 parts, from MOTORAD, GATES, GM GENUINE and 2 other brands. A representative part number is GATES 33429.

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

9 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2005 Buick Lesabre, from MOTORAD, VICTOR REINZ, FEL-PRO and 4 other brands. FEL-PRO 35666 carries the "Popular" badge.

Listed part numbers: FEL-PRO 35666, GM GENUINE 24506985 and APEX AWO2055, plus the other parts above.

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

4 Thermostat Housing / Water Outlet parts for the 2005 Buick Lesabre come from 4 brands — DORMAN, GPD, FOUR SEASONS and 1 other brand.

The Economy section: 2 options from DORMAN and GPD. DORMAN 9022001 is listed in this group.

Standard Replacement: 2 parts, from FOUR SEASONS and MOTORAD. A representative part number is FOUR SEASONS 85167.

Listed part numbers: DORMAN 9022001, GPD 8241409 and FOUR SEASONS 85167, plus the other 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

11 Water Pump parts for the 2005 Buick Lesabre come from 10 brands — DAYCO, US MOTOR WORKS, FVP and 7 other brands. The "Popular" part is US MOTOR WORKS US5075.

The Economy section: 4 options from US MOTOR WORKS, FVP, SKP and 1 other brand. US MOTOR WORKS US5075 is listed in this group.

Standard Replacement: 7 parts, from DAYCO, ACDELCO, GMB and 3 other brands. A representative part number is ACDELCO 252693.