This page lists 50 cooling system parts for the 2000 Buick Lesabre, across 11 part types, covering the 3.8L V6 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2000 Buick Lesabre, 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 (16 parts), Radiator Cap (9 parts) and Coolant Hose / Pipe (4 parts). The other 8 part types cover the remaining 21 parts.
Every part on this page is matched to the 3.8L V6 — the only engine offered in the 2000 Buick Lesabre.
The most listed brands for 2000 Buick Lesabre cooling system parts are PRESTONE (6 parts), GM GENUINE (5 parts) and ACDELCO (4 parts), plus 19 more brands. Quality grades include Standard Replacement, Economy and Locking Replacement.
6 parts on this 2000 Buick Lesabre page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and ACDELCO RC27 (Radiator Cap). 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 2000 Buick Lesabre 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 2000 Buick Lesabre — DORMAN 902112.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 18455L | 🇺🇸 US 🇨🇦 CA | Professional / GoldMolded | View on Amazon |
| DAYCO | 88000 | 🇺🇸 US 🇨🇦 CA | Radiator to Reservoir | View on Amazon |
| GM GENUINE | 12565082 | 🇺🇸 US 🇨🇦 CA | Thermostat Bypass | View on Amazon |
| GM GENUINE | 24503423 | 🇺🇸 US 🇨🇦 CA | to lower intake manifold.Thermostat Bypass | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
4 Coolant Hose / Pipe parts for the 2000 Buick Lesabre come from 3 brands — GM GENUINE, ACDELCO and DAYCO.
Listed part numbers: ACDELCO 18455L, DAYCO 88000 and GM GENUINE 12565082, plus the other parts above.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 36021 | 🇺🇸 US 🇨🇦 CA | Water Bypass Seal | View on Amazon |
| GM GENUINE | 1534066 | 🇺🇸 US 🇨🇦 CA | 0.674" Diameter | View on Amazon |
| GM GENUINE | 24502846 | 🇺🇸 US 🇨🇦 CA | To Front CVRThermostat Bypass Pipe Seal | View on Amazon |
| MAHLE / CLEVITE | C31274 | 🇺🇸 US 🇨🇦 CA | Paper | 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.
4 Coolant Hose / Pipe Seal parts are listed for the 2000 Buick Lesabre, from 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.
Coolant Hose Connector / Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 86500 | 🇺🇸 US 🇨🇦 CA | Coolant Coupling | View on Amazon |
This table covers the Coolant Hose Connector flanges.
This group shows a single part: FOUR SEASONS 86500.
Coolant Level Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND | SBA3759 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD | 1712533 | 🇺🇸 US 🇨🇦 CA | Engine Coolant Level Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS | FLS17 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 5S1453 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
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.
4 Coolant Level Sensor parts for the 2000 Buick Lesabre come from 4 brands — FAMOUS BRAND, GPD, STANDARD MOTOR PRODUCTS and 1 other brand.
Listed part numbers: FAMOUS BRAND SBA3759, GPD 1712533 and STANDARD MOTOR PRODUCTS FLS17, plus the other parts above.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO | GM3014104 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
One part is listed for the 2000 Buick Lesabre — TECHPRO GM3014104.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 82594 | 🇺🇸 US 🇨🇦 CA | Coolant Cap | View on Amazon |
| DORMAN | 54217 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE | RC122 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOTORAD | T80 | 🇺🇸 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.
4 Coolant Reservoir Cap parts are listed for the 2000 Buick Lesabre, from DORMAN, GM GENUINE and MOTORAD.
Part numbers include DORMAN 82594, DORMAN 54217 and GM GENUINE RC122, among others listed above.
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 2000 Buick Lesabre.
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 2000 Buick Lesabre come from 3 brands — ACDELCO, GATES and MOTORAD.
Listed part numbers: ACDELCO 12A01, GATES 31413 and MOTORAD 3003.
Radiator Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT | RC0214 | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 2 seals | View on Amazon |
| CALORSTAT | RC0217 | 🇺🇸 US 🇨🇦 CA | PerformanceIncludes 2 seals | View on Amazon |
| GATES | 31516 | 🇺🇸 US 🇨🇦 CA | Safety Release Radiator Cap | View on Amazon |
| MOTORAD | ST16V | 🇺🇸 US 🇨🇦 CA | Safety Lever | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | RC27 | 🇺🇸 US 🇨🇦 CA | GM Original Equipmentwith Handle, with Turning Ears | View on Amazon |
| GATES Popular | 31523 | 🇺🇸 US 🇨🇦 CA | OE Type | View on Amazon |
| CALORSTAT | RC0061 | 🇺🇸 US 🇨🇦 CA | Includes 2 sealsMetallic | 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.
9 Radiator Cap parts for the 2000 Buick Lesabre come from 5 brands — CALORSTAT, GATES, MOTORAD and 2 other brands. The "Popular" part is ACDELCO RC27.
In the Locking Replacement grade, CALORSTAT, GATES and MOTORAD supply 4 parts: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is CALORSTAT RC0214.
Standard Replacement: 5 parts, from ACDELCO, GATES, CALORSTAT and 2 other brands. A representative part number is ACDELCO RC27.
This group includes ACDELCO RC27, CALORSTAT RC0214 and CALORSTAT RC0217 and the remaining parts above.
Buying Cooling System Parts for a 2000 Buick Lesabre
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 3.8L 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 Cap .
Frequently Asked Questions
How many cooling system parts fit the 2000 Buick Lesabre?
Our catalog currently lists 50 cooling system parts for the 2000 Buick Lesabre across 11 subcategories and 22 brands, covering the 3.8L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2000 Buick Lesabre?
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 2000 Buick Lesabre 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 2000 Buick Lesabre?
Every part on this page is matched to the 3.8L 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 2000 Buick Lesabre
Cooling System Parts for Other Buick Lesabre Years
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