How to replace the thermostat in a four-cylinder engine on Pontiac Firebird?

To replace the thermostat, undo the water outlet housing as well as the thermostat, and clean the gasket sealing surfaces. Reconnect the radiator hose, and refill the cooling system with an antifreeze/water mix. Finally, reattach the battery cable, start the engine, and add coolant until the radiator is filled, then seal with the cap.

OEM Pontiac Thermostat

Engine Coolant Thermostat

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49 Thermostats found

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Pontiac Thermostat Part Number: 10192505
$6.75 MSRP: $17.42
You Save: $10.67 (62%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 03059793, 3059793
Fits the following Pontiac Models:
- Fiero | 1984-1988 | Base, GT, SE, Sport, Value Leader | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
- Grand Am | 1985-1989 | Base, LE, SE | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
- J2000 Sunbird | 1984-1985 | Base, LE, SE | 4 Cyl 1.8 L GAS
- Phoenix | 1984 | Base, LE | 4 Cyl 2.5 L GAS
- Sunbird | 1986-1994 | Base, GT, LE, LE Value Leader, SE, Value Leader | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Pontiac Thermostat Housing Part Number: 25199826
$145.24 MSRP: $440.69
You Save: $295.45 (68%)
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover
- Replaces: 96984102, 25189437, 96980317
Fits the following Pontiac Models:
- G3 | 2009-2010 | Base | 4 Cyl 1.6 L GAS
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Pontiac Thermostat, Green Line Part Number: 12622410
$69.04 MSRP: $157.67
You Save: $88.63 (57%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant
- Replaces: 21018811, 90537453, 55350941, 12615097
Fits the following Pontiac Models:
- G5 | 2007-2009 | Base, GT | 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
- G6 | 2006-2010 | Base | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
- Grand Am | 2002-2005 | SE, SE1 | 4 Cyl 2.2 L GAS
- Solstice | 2006-2009 | Base, GXP | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L GAS
- Sunfire | 2002-2005 | Base, GT, SE | 4 Cyl 2.2 L GAS
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Pontiac Thermostat Housing, Green Line Part Number: 12597172
$93.11 MSRP: $196.13
You Save: $103.02 (53%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Engine Coolant Thermostat Housing; Thermostat Housing Cover; Water Manifold; Housing, Engine Coolant Thermostat
Fits the following Pontiac Models:
- G5 | 2007-2009 | Base, GT | 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
- G6 | 2006-2010 | Base | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
- Solstice | 2006-2009 | Base | 4 Cyl 2.4 L GAS
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Pontiac Thermostat Part Number: 24507563
$20.53 MSRP: $41.76
You Save: $21.23 (51%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaced by: 19435095
Fits the following Pontiac Models:
- Aztek | 2001-2005 | Base, GT, Rally | 6 Cyl 3.4 L GAS
- G6 | 2005-2006 | Base, GT | 6 Cyl 3.5 L GAS
- Grand Am | 1994-2005 | GT, GT1, SE, SE1, SE2 | 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS
- Grand Prix | 1992-2003 | Base, GT, GTP, LE, SE, STE | 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS
- Montana | 1999-2006 | Base, SV6 | 6 Cyl 3.4 L GAS, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L GAS
- Sunbird | 1993-1994 | GT, LE, LE Value Leader, SE | 6 Cyl 3.1 L GAS
- Torrent | 2006-2009 | Base | 6 Cyl 3.4 L GAS
- Trans Sport | 1992-1998 | Base, Montana | 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS
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Pontiac Thermostat Unit Part Number: 24505924
$28.95 MSRP: $58.90
You Save: $29.95 (51%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant (W/Gasket); Thermostat; Thermostat, Engine Coolant Temperature
Fits the following Pontiac Models:
- Bonneville | 1992-2005 | SE, SLE, SSE, SSEi | 6 Cyl 3.8 L GAS
- Firebird | 1998-2002 | Base | 6 Cyl 3.8 L GAS
- Grand Am | 1992-1993 | GT, SE | 6 Cyl 3.3 L GAS
- Grand Prix | 1998-2008 | Base, GT, GT1, GT2, GTP, GXP, SE | 6 Cyl 3.8 L GAS, 8 Cyl 5.3 L GAS
- Trans Sport | 1992-1995 | Base | 6 Cyl 3.8 L GAS
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Pontiac Thermostat Part Number: 89018168
$36.41 MSRP: $74.05
You Save: $37.64 (51%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Engine Coolant Temperature
- Replaces: 89017851
Fits the following Pontiac Models:
- G8 | 2009 | GT, GXP | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
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Pontiac Thermostat Part Number: 12559807
$47.41 MSRP: $96.48
You Save: $49.07 (51%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 12554784, 12555811, 3531407
Fits the following Pontiac Models:
- Bonneville | 2004-2005 | GXP | 8 Cyl 4.6 L GAS
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Pontiac Thermostat Part Number: 12555290
$38.76 MSRP: $76.94
You Save: $38.18 (50%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 10128336, 10223370
Fits the following Pontiac Models:
- Firebird | 1993-1997 | Formula, Trans Am, Trans Am GT | 8 Cyl 5.7 L GAS
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Pontiac Thermostat Housing Part Number: 1647540
$11.19 MSRP: $21.01
You Save: $9.82 (47%)
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Product Specifications
- Other Name: Housing E; Thermostat Housing Cover; Water Outlet; Housing, Engine Coolant Thermostat
Fits the following Pontiac Models:
- Bonneville | 2004-2005 | GXP | 8 Cyl 4.6 L GAS
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Pontiac Thermostat Unit Part Number: 24506986
$18.57 MSRP: $34.88
You Save: $16.31 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat
- Replaces: 03037747, 10207375, 24500253, 3037747
Fits the following Pontiac Models:
- Bonneville | 1987-1997 | Base, LE, SE, SSE, SSEi | 6 Cyl 3.8 L GAS
- Firebird | 1995-1997 | Base | 6 Cyl 3.8 L GAS
- Grand Am | 1985-1987 | Base, LE, SE | 6 Cyl 3.0 L GAS
- Grand Prix | 1997 | GT, GTP, SE | 6 Cyl 3.8 L GAS
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Pontiac Thermostat Unit Part Number: 12600171
$24.61 MSRP: $46.24
You Save: $21.63 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat
- Replaces: 12581595
Fits the following Pontiac Models:
- G8 | 2008-2009 | Base, GT, GXP | 6 Cyl 3.6 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
- Grand Prix | 2005-2008 | GXP | 8 Cyl 5.3 L GAS
- GTO | 2004-2006 | Base | 8 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS
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Pontiac Water Outlet Part Number: 55578419
$107.66 MSRP: $202.19
You Save: $94.53 (47%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant (W/Water Outlet); Engine Coolant Thermostat; Thermostat, Coolant; Thermostat Housing; Thermostat
- Replaced by: 25199828
Fits the following Pontiac Models:
- G3 | 2009-2010 | Base | 4 Cyl 1.6 L GAS
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Pontiac Thermostat Part Number: 12514334
$13.85 MSRP: $24.74
You Save: $10.89 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat 195 Degree, Engine Coolant Temperature
Fits the following Pontiac Models:
- Firebird | 1985-1992 | Base, Formula, S/E, Trans Am, Trans Am GTA | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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Pontiac Thermostat Housing Part Number: 92249137
$82.25 MSRP: $148.86
You Save: $66.61 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover; Housing, Engine Coolant Temperature
- Replaces: 92068018
Fits the following Pontiac Models:
- G8 | 2008-2009 | Base | 6 Cyl 3.6 L GAS
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Pontiac Thermostat Part Number: 12591881
Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat, Engine Coolant Temperature
Fits the following Pontiac Models:
- G6 | 2006-2010 | Base, GT, GTP | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L GAS
- Montana | 2006 | SV6 | 6 Cyl 3.9 L GAS
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Pontiac Intake Manifold Part Number: 24577299
$16.76 MSRP: $29.91
You Save: $13.15 (44%)
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat Unit; Thermostat
- Replaces: 10182377, 24577130, 24576634
Fits the following Pontiac Models:
- Firebird | 1989-1995 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS
- Sunfire | 1995 | SE | 4 Cyl 2.2 L GAS
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Pontiac Thermostat Part Number: 3041415
Product Specifications
- Other Name: Thermostat Assembly, Engine Coolant; Thermostat, Engine Coolant Temperature
Fits the following Pontiac Models:
- T1000 | 1984-1987 | Base | 4 Cyl 1.6 L GAS
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Pontiac Thermostat Part Number: 3043066
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
Fits the following Pontiac Models:
- Firebird | 1984-1988 | Base, S/E | 6 Cyl 2.8 L GAS
- J2000 Sunbird | 1984-1985 | Base, LE, SE | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Sunbird | 1986 | Base, GT, SE | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Pontiac Thermostat Part Number: 10045126
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
Fits the following Pontiac Models:
- Sunbird | 1987 | Base, GT, SE | 4 Cyl 2.0 L GAS

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Pontiac Thermostat

Choose OEM Thermostat, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Pontiac's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Pontiac Thermostat. You can shop at highly competitive prices and protect your budget. All our genuine Pontiac parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Pontiac Thermostat maintains the engine heat at the sweet point to ensure the power remains vigorous. In 1926, Pontiac began screaming along the roads and already gained a reputation for spirited performance. The company expanded the width of the wheel tracks, made the bodies look tougher, and allowed the drivers to feel like pilots. Firebird and Grand Am Pontiac models combined practicality with a shot of adrenaline. Pontiac has maintained fun in a fundamental promise over decades through cabin, suspension, and fashioning modifications. There was wide stance stability and eager steering, an easy path to grin-inducing drives, both for teens and grandparents. Design groups applied to pursue real-life excitement instead of brochure counts, thus dashboards that tried to face the driver and gear ratios that cried out to be whipped fast. Even entry trims were purposeful since the marque did not focus on performance as an additional feature. When you push that vow on the brink of stop-and-go traffic, that technology under the hood is important. Another type of modern Thermostat is installed next to the radiator in a tight loop and only switches on when coolant reaches its set point. The Thermostat opens fast, then closes to put coolant on the appropriate detour to keep the metal strong and burn fuel clean. The bimetal strip or wax pellet core of the Thermostat responds to temperature fluctuations within seconds, protecting against overheating on extended climbs and slow warm-ups in winter.

Pontiac Thermostat Parts and Q&A

Thermostat
12514334
Q: How to replace the thermostat in a four-cylinder engine on Pontiac Firebird?
A:
To replace the thermostat, undo the water outlet housing as well as the thermostat, and clean the gasket sealing surfaces. Reconnect the radiator hose, and refill the cooling system with an antifreeze/water mix. Finally, reattach the battery cable, start the engine, and add coolant until the radiator is filled, then seal with the cap.