1999 Buick Regal 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 1999 Buick Regal, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

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

3 Coolant Hose / Pipe parts are listed for the 1999 Buick Regal, from GM GENUINE and CONTINENTAL. All of them fit every engine offered in the 1999 Regal.

This group includes CONTINENTAL 63043, GM GENUINE 12565082 and GM GENUINE 24503423.

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

5 Coolant Hose / Pipe Seal parts for the 1999 Buick Regal come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE. The "Popular" part is GM GENUINE 1534066. 4 parts fit every engine; the other 1 is engine-specific.

Part numbers include GM GENUINE 1534066, FEL-PRO 36021 and GM GENUINE 24502846, among others listed above.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 1999 Buick Regal — 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

7 Coolant Level Sensor parts are listed for the 1999 Buick Regal, from HOLSTEIN, GPD, ULTRA-POWER and 4 other brands. GPD 1712532 carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2CTS0221.

The Standard Replacement section: 1 option from GPD. GPD 1712532 is listed in this group.

5 ungrouped parts are not assigned to a grade, with the same engine-level match.

Listed part numbers: GPD 1712532, HOLSTEIN 2CTS0221 and ULTRA-POWER 5S1449, plus the other parts above.

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

This group shows a single part: TECHPRO GM3014106.

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 1999 Buick Regal come from 2 brands — DORMAN and MOTORAD. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

Part numbers include DORMAN 82724, DORMAN 54217 and MOTORAD T167.

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

2 Coolant Reservoir Retainer / Clip parts are listed for the 1999 Buick Regal, from DORMAN and GM GENUINE. All of them fit every engine offered in the 1999 Regal.

This group includes DORMAN 961070 and GM GENUINE 10427340.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 1999 Buick Regal come from US MOTOR WORKS. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

Listed part numbers: 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 1999 Buick Regal, from ACDELCO, GATES and MOTORAD. All of them fit every engine offered in the 1999 Regal.

This group includes 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

16 Radiator parts are listed for the 1999 Buick Regal, from GPD, TYC, AGILITY and 6 other brands. KOYORAD A1889 carries the "Popular" badge. 4 parts fit every engine; the other 12 are engine-specific.

Economy: 2 parts, from GPD. A representative part number is GPD 1890C.

The Standard Replacement section: 14 options from TYC, AGILITY, FVP and 5 other brands. KOYORAD A1889 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

9 Radiator Cap parts are listed for the 1999 Buick Regal, from CALORSTAT, GATES, MOTORAD and 2 other brands. ACDELCO RC27 carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

The Locking Replacement section lists 4 options from CALORSTAT, GATES and MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. CALORSTAT RC0214 is listed in this group.

The Standard Replacement section: 5 options from ACDELCO, GATES, CALORSTAT and 2 other brands. ACDELCO RC27 is listed in this group.

This group includes ACDELCO RC27, CALORSTAT RC0214 and CALORSTAT RC0217 and the remaining parts above.

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

2 Radiator Drain Petcock parts for the 1999 Buick Regal come from 2 brands — DORMAN and GM GENUINE. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

Part numbers include DORMAN 61133 and GM GENUINE 88927326.

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 1999 Buick Regal come from 6 brands — DORMAN, GPD, TECHPRO and 3 other brands. The "Popular" part is DORMAN 620607. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

The Economy section: 3 options from DORMAN, GPD and TECHPRO. DORMAN 620607 is listed in this group.

Standard Replacement: 3 parts, from FOUR SEASONS, UAC and VDO / CONTINENTAL. A representative part number is FOUR SEASONS 75483.

This group includes DORMAN 620607, GPD 2811476 and TECHPRO GM3115117 and the remaining 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

5 Radiator Fan Motor parts are listed for the 1999 Buick Regal, from GPD, TYC, FOUR SEASONS and 1 other brand. TYC 630070 carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

Listed part numbers: TYC 630070, FOUR SEASONS 35389 and GPD 2311415, plus the other 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 1999 Buick Regal come from 4 brands — GATES, ACDELCO, CONTINENTAL and 1 other brand. The "Popular" part is GATES 22344. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

Listed part numbers: GATES 22344, GATES 22373 and ACDELCO 26346X, 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 1999 Buick Regal — DORMAN 961364.

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

14 Temperature Sender / Sensor parts are listed for the 1999 Buick Regal, from UNITED MOTOR PRODUCTS, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 8 other brands. UNITED MOTOR PRODUCTS CTS3 carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

Economy: 4 parts, from UNITED MOTOR PRODUCTS, HOLSTEIN and STANDARD MOTOR PRODUCTS. A representative part number is UNITED MOTOR PRODUCTS CTS3.

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 21191039.

The Standard Replacement section: 9 options from FOUR SEASONS, GM GENUINE, BECK/ARNLEY and 6 other brands. FOUR SEASONS 36445 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 1999 Buick Regal come from 5 brands — MOTORAD, GATES, GM GENUINE and 2 other brands. The "Popular" part is MOTORAD 5239192. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

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

10 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 1999 Buick Regal, from MAHLE / CLEVITE, MOTORAD, VICTOR REINZ and 4 other brands. FEL-PRO 35666 carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

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

4 Thermostat Housing / Water Outlet parts for the 1999 Buick Regal come from 4 brands — DORMAN, GPD, FOUR SEASONS and 1 other brand. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

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.

Part numbers include DORMAN 9022001, GPD 8241409 and FOUR SEASONS 85167, among others listed 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 1999 Buick Regal come from 9 brands — DAYCO, FVP, SKP and 6 other brands. The "Popular" part is ACDELCO 252693. Every part fits both the 3.8L V6 and the 3.8L V6 Supercharged.

The Economy section: 3 options from FVP, SKP and US MOTOR WORKS. FVP 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.

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

9 Water Pump Gasket parts are listed for the 1999 Buick Regal, from FEL-PRO, APEX, MAHLE / CLEVITE and 2 other brands. FEL-PRO 35351 carries the "Popular" badge. All of them fit every engine offered in the 1999 Regal.

Listed part numbers: FEL-PRO 35351, FEL-PRO 35804 and APEX AWP3003, plus the other parts above.