2003 Nissan Altima Thermostat

Your 2003 Nissan Altima might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Thermostat product you desperately need.

We currently carry 10 Thermostat products to choose from for your 2003 Nissan Altima, and our inventory prices range from as little as $14.06 up to $58.99.

On top of low prices, Advance Auto Parts offers 7 different trusted brands of Thermostat products for the 2003 Nissan Altima. We only sell parts from trusted brands like Motorad so that you can find quality parts you can count on.

Don’t take our word for it - check out customer ratings and reviews to buy with confidence. We have 51 reviews on our Thermostat products for the 2003 Nissan Altima from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Thermostat stock in-person!

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Thermostat for Your 2003 Nissan Altima

Search through our amazing selection of Thermostat products for your 2003 Nissan Altima to find exactly what you’re looking for. Compare prices and reviews to choose the best part for you.

Carquest Premium - Thermostat-180 Degrees w/ Seal (Part No. 14678)
Description
Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

Product Features:
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Consistent and precise response to cooling system needs
Original equipment design for worry-free direct fit replacement
100% tested and calibrated

4.5

Read 3 review(s)

Review snapshot ® by PowerReviews

4.5

4.5

4

4

2021-01-31

4

4

I would buy it again.

I would buy it again.

Submitted 2021-01-31

By Orenthal

From Undisclosed

It helped a lot. Didn't solve my original problem though

Bottom Line NULL

It helped a lot. Didn't solve my original problem though

By Orenthal from Undisclosed

BOTTOM LINE NULL

4

4

2020-12-29

4

4

I would buy this product again

I would buy this product again

Submitted 2020-12-29

By JEFFERY

From Undisclosed

Just what I needed at the price I liked.

Bottom Line NULL

Just what I needed at the price I liked.

By JEFFERY from Undisclosed

BOTTOM LINE NULL

3

3

2020-01-02

3

3

Not oem size (larger)

Not oem size (larger)

Submitted 2020-01-02

By Bradley

From Undisclosed

Larger than original oem thermostat. Made installation more difficult. Had to use a grinder to get the gasket to fit.

Bottom Line NULL

Larger than original oem thermostat. Made installation more difficult. Had to use a grinder to get the gasket to fit.

By Bradley from Undisclosed

BOTTOM LINE NULL
from $24.99
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Motorad - Thermostat Kit-180 & 203 Degrees w/ Gasket and Seals (Part No. 427457)
Description
Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

Product Features:
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Consistent and precise response to cooling system needs
Original equipment design for worry-free direct fit replacement
100% tested and calibrated

4.0

Read 1 review(s)

Review snapshot ® by PowerReviews

4.0

4.0

4

4

2020-03-02

4

4

Pay attention to how your old thermostats come out.

Pay attention to how your old thermostats come out.

Submitted 2020-03-02

By BooomerX

From North Carolina

Pay attention to how your old thermostats come out. I'd suggest doing the one on the top radiator hoes first as it the easiest. The second one on the lower hose is a little more aggravating to change out but but doable. The instructions in the box are wrong for the lower hose thermostat. They show it going into the engine spring first. This is incorrect it goes in the opposite direction withe the spring going into the thermostat housing. If you pay attention to how the old one come out and put the new one back in the exact same way you won't have any problems. One of the two thermostats was throwing a code for too cool engine temp. I just changed them both out at the same time and cleared the code. It hasn't came back so one of them was bad.

Bottom Line recommended

Pay attention to how your old thermostats come out. I'd suggest doing the one on the top radiator hoes first as it the easiest. The second one on the lower hose is a little more aggravating to change out but but doable. The instructions in the box are wrong for the lower hose thermostat. They show it going into the engine spring first. This is incorrect it goes in the opposite direction withe the spring going into the thermostat housing. If you pay attention to how the old one come out and put the new one back in the exact same way you won't have any problems. One of the two thermostats was throwing a code for too cool engine temp. I just changed them both out at the same time and cleared the code. It hasn't came back so one of them was bad.

By BooomerX from North Carolina

BOTTOM LINE recommended
from $23.99
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Carquest Premium - Thermostat-203 Degrees w/ Seal (Part No. 15112)
Description
Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

Product Features:
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Consistent and precise response to cooling system needs
Original equipment design for worry-free direct fit replacement
100% tested and calibrated

4.0

Read 3 review(s)

Review snapshot ® by PowerReviews

4.0

4.0

1

1

2022-07-27

1

1

Didn't fit

Didn't fit

Submitted 2022-07-27

By Strawberristar007

From Memphis, TN

It didn't fit my 2014 Nissan Altima even though it says "exact fit", it's too small

Bottom Line not recommended

It didn't fit my 2014 Nissan Altima even though it says "exact fit", it's too small

By Strawberristar007 from Memphis, TN

BOTTOM LINE not recommended

5

5

2018-12-07

5

5

Good choice

Good choice

Submitted 2018-12-07

By Timothy

From Undisclosed

Quick and easy

Bottom Line NULL

Quick and easy

By Timothy from Undisclosed

BOTTOM LINE NULL

4

4

2018-04-28

4

4

Fine

Fine

Submitted 2018-04-28

By Garrio

From undisclosed

Nice it work

Bottom Line NULL

Nice it work

By Garrio from undisclosed

BOTTOM LINE NULL
from $15.99
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Motorad UltraStats - Thermostat-185 And 205 Degrees w/ Gasket and Seals (Part No. 5427457)
Description
Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable

Product Features:
Heavy gauge stainless steel components offer increased reliability and long-lasting durability
Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
AccuSpring Design for stable temperature control and increased cabin comfort
from $58.99
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Autopart International Inc - Thermostat Assembly (Part No. G40022012200API)

from $39.82
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Meyle - Thermostat (Part No. G4000287385MEY)

from $22.63
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NTC - Thermostat (Part No. G4000435521NTC)
Description
NTC offers a full line of thermostats to replace your original equipment thermostat. This includes a wide variety of temperature ranges all designed to operate within OEM specifications.

Product Features:
Strict quality control, and functional testing
Self-cleaning and self-aligning thermostat valve
Original equipment design provides exact fit and performance
Precise sealing edges reduce leakage and premature cooling
Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
Stainless steel assembly and springs are engineered for long life
from $22.21
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Gates - Thermostat (Part No. G4000848509GAT)

from $19.41
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Autopart International Inc - Thermostat (Part No. G40001927633API)

from $18.16
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Autopart International Inc - Thermostat (Part No. G40001922042API)

from $14.06
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