Intake Air Temperature Sensor Buying Guide — Cheap OEM Replacement Parts for Sale | REVXSC
Looking for cheap intake air temperature sensors that won't fail in 6 months? Whether you're chasing how to test intake air temperature sensor with multimeter, P0113 intake air temperature sensor high input, where is the IAT sensor located on a ford explorer, intake air temperature sensor replacement cost, IAT sensor vs MAF sensor difference, this guide covers what to buy, what to skip, and how to make sure the part you order actually fits your truck or car. Every intake air temperature sensor sold at REVXSC ships with a verified year/make/model/engine fitment table — no guessing.
What intake air temperature sensors actually do
In one sentence: the thermistor that measures the temperature of incoming air so the ECM can fine-tune fuel mixture and ignition timing. When they wear out, you'll typically feel it before you see it — your car starts telling you something is wrong, and ignoring it gets expensive.
Signs you need new intake air temperature sensors
- check engine light with codes P0111, P0112, P0113
- rough idle or stalling, especially in cold weather
- noticeable drop in fuel economy
- hard starting when cold or hot
- black smoke from exhaust under acceleration
If you tick more than one box, replace before it leaves you on the side of the road. The repair gets a lot cheaper when you catch it early.
Also known as
Depending on the shop manual, region, or supplier you're reading, intake air temperature sensors are also called: IAT sensor, intake air temp sensor, ACT sensor, MAT sensor, charge air temperature sensor. They all refer to the same component — when you're cross-referencing OEM and aftermarket part numbers, watch for these naming variations so you don't double-order the same item.
How much should you pay?
Online direct-ship from REVXSC undercuts dealer parts counters significantly. We carry quality replacement intake air temperature sensors from Standard Motor Products, NTK, Walker Products, ACDelco, Bosch, Denso, Wells, Delphi — every listing shows the price, the fitment chart, and real product photos. No mystery part numbers.
Featured intake air temperature sensors in stock right now
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OEM vs aftermarket: which to choose
For intake air temperature sensors, the brand actually matters. Standard Motor Products and NTK supply major automakers as OEM suppliers — when you buy their boxed retail product, you're getting the same engineering and tolerances. Most sensors are simple two-wire negative-temperature-coefficient (NTC) thermistors, but some applications combine the IAT with the MAF sensor in a single housing, and forced-induction engines use post-intercooler charge temp sensors with faster response curves..
Install: DIY or shop?
Difficulty: beginner. Bay time runs about 10–30 minutes with the right tools. Lifespan you should expect: 100,000+ miles.
How REVXSC keeps prices low
Every listing includes a year/make/model/engine table.
ACDelco, Bosch, Dorman, Dayco, FEL-PRO and more.
Ships from US warehouses with real tracking.
No knockoff boxes, no rebranded junk.
Intake Air Temperature Sensor shipping to every US state
REVXSC ships intake air temperature sensors same-day from US fulfillment to every state. Whether you're chasing salt-corroded intake air temperature sensors in the Midwest, heat-fatigued parts in the Southwest, or just need a fast OEM-grade replacement, every order ships from the US with tracking. We deliver to:
Common questions Americans ask about intake air temperature sensors
What does the intake air temperature sensor do?
It measures the temperature of incoming air and sends the data to the engine computer, which uses it to calculate air density and adjust fuel injection and ignition timing for the conditions. Cold dense air needs more fuel; hot thin air needs less.
What are the symptoms of a bad IAT sensor?
A check engine light with codes P0111 through P0113, rough idle in cold weather, hard cold starts, poor fuel economy, hesitation under acceleration, and occasionally black exhaust smoke from over-fueling.
How much does an IAT sensor cost?
OE-quality sensors run $15-$60, with most domestic and import applications under $40. Shop labor is usually 0.3-0.5 hours, so total cost rarely exceeds $100 installed.
Can a bad IAT sensor cause poor gas mileage?
Yes. If the sensor reports falsely cold readings, the ECM adds extra fuel that the engine doesn't need, which can drop fuel economy 2-5 mpg. Falsely hot readings lean out the mixture and cause hesitation.
Where is the IAT sensor located?
It's typically threaded or push-pinned into the intake tube between the air filter and throttle body, or built into the MAF sensor. On turbocharged engines, a second post-intercooler IAT may sit in the charge pipe.
How do you test an IAT sensor?
With a multimeter on the ohms setting, measure resistance across the two terminals. At 70°F most sensors read 2,000-3,000 ohms; resistance drops as temperature rises. If it reads open, shorted, or doesn't change with a hair dryer, replace it.
Will a car run without an IAT sensor?
Yes, but poorly. The ECM falls back on a default value (usually 68°F) which causes inefficient fueling, especially in extreme weather, and triggers a permanent check engine light.
Can I clean an IAT sensor instead of replacing it?
Sometimes. Carbon or oil contamination from a leaky PCV system fools the sensor. Spray it gently with electronics cleaner or MAF cleaner, let it dry, and reinstall. If it still throws codes, replace it.
Is the IAT sensor the same as the coolant temperature sensor?
No. The IAT measures air temperature; the ECT (engine coolant temperature) sensor measures coolant temperature. The ECM uses both together to calculate the correct fuel and timing values.
Top US searches for intake air temperature sensors
Most-searched phrases from American shoppers comparing intake air temperature sensors this year — all of these are served by what REVXSC stocks:
This guide is updated as our intake air temperature sensor inventory and fitment data change. Last reviewed 2026-06-28.