For a 350 TBI engine, confirm the vehicle, model year, engine, connector, and replacement part number before choosing an idle air control valve. The KAX listing specifically includes some Chevrolet and GMC trucks with 5.7L engines; Walker Products may suit buyers seeking an OE-style replacement, but its listed details require a fitment check. The other products below have fitment limits that make them poor choices for many 350 TBI applications. Use the vehicle-specific fitment information—not engine displacement alone—to decide.
| Product | Best suited for | Fitment note |
|---|---|---|
| KAX IAC Valve | Listed Chevrolet/GMC trucks | Includes some 5.7L applications; verify year and model |
| Walker Products 215-1003 | OE-style replacement shoppers | Confirm exact vehicle fitment |
| A-Premium 4-Pin Valve | Broad listed GM applications | Confirm exact engine and connector |
| A-Premium Small-Engine Valve | Specified 2.0L and 2.2L cars | Not listed for 350 TBI |
| A-Premium IAC and TPS Set | Specified Ford V8 applications | Not listed for GM 350 TBI |
KAX IAC Valve For Listed GM Trucks
Best for: Buyers whose Chevrolet or GMC truck matches the product’s listed year, model, engine, and connector. The fitment list includes some C1500, C2500, K1500, and K2500 trucks with 5.7L engines, as well as certain other GM vehicles. It describes an electromagnetic coil that adjusts the idle-air opening.
Why it is included: Of the supplied listings, this one gives particularly detailed GM truck fitment information relevant to some 350 TBI vehicles. It is not a universal 350 TBI valve: check the specific year and application against the listing and the original part.
Limitation: The extensive fitment list does not establish compatibility with every 5.7L engine or TBI setup.
Walker Products 215-1003 IAC Valve
Best for: Buyers who find their exact vehicle listed through the product’s fitment checker and want an OE-style replacement. Walker says the valve installs at factory mounting points and connectors without wiring modifications, and is calibrated to factory specifications for pintle movement, voltage response, and airflow control.
Why it is included: Its stated direct-fit design and factory-spec calibration are useful selection criteria when replacing a matching original valve. The listed package contains one unit.
Limitation: The supplied product details do not identify specific 350 TBI vehicles. Do not assume fitment based only on “350” or “5.7L”; confirm the vehicle and part number first.
A-Premium 4-Pin Valve For Listed GM Models
Best for: Owners of a GM vehicle explicitly covered by this listing whose original valve matches the four-pin connector and other fitment details. The application list spans many Chevrolet and GMC vehicles, including some trucks and SUVs, along with Buick, Cadillac, Oldsmobile, Pontiac, Isuzu, Jaguar, and Land Rover models.
Why it is included: Its broad listed vehicle coverage makes it a candidate to check for certain GM applications. Match the exact year, model, engine, and connector rather than relying on a brand or model-family name.
Limitation: A long vehicle list is not proof of compatibility with a particular 350 TBI vehicle. Confirm the application before ordering.
A-Premium Valve For Specific 2.0L And 2.2L Cars
Best for: Buyers with a listed Buick Skyhawk, Chevrolet Beretta, Cavalier, or Corsica, or Oldsmobile Firenza application matching the specified year and engine. The listing identifies a four-terminal valve with one port and included hardware and gasket.
Why it is included: Its specifications illustrate why connector and vehicle-specific fitment matter when shopping for an IAC valve.
Limitation: The listed applications are specific four-cylinder cars, including 2.0L and 2.2L engines. This is not a listed choice for a GM 350 TBI engine; avoid it for that application.
A-Premium Ford IAC And TPS Set
Best for: Owners of the listed 1994–1997 Ford truck, Bronco, or Econoline applications with the specified V8 engines who need both an IAC valve and throttle position sensor. The listing gives separate terminal and mounting details for the two components and says the IAC gasket is included.
Why it is included: It provides a useful contrast for shoppers comparing products by engine type and vehicle-specific application.
Limitation: Its fitment is for specified Ford vehicles, not a GM 350 TBI application. Do not select it for a Chevrolet or GMC 350 based on engine size alone.
Buying Guide: Choosing A 350 TBI Idle Air Control Valve
How do you confirm the valve fits?
Start with the vehicle’s year, make, model, engine, and fuel-injection setup. Then compare the original valve’s connector, mounting points, and part number with the replacement listing. A 350 TBI and a 5.7L designation do not, by themselves, confirm that two valves interchange. Use the seller’s vehicle fitment checker where available, and compare the physical part before installation.
Should you prioritize OE-style fit?
If you want a direct replacement, look for explicit claims about factory mounting points, connectors, and calibration, as Walker Products states for its 215-1003. Those claims matter only if the part is confirmed for the vehicle. A valve described as direct fit is not necessarily direct fit for every 350 TBI setup.
What if the listing covers many vehicles?
Broad fitment can be helpful, but it can also make checking the details more important. Narrow the list to the exact year, model, engine, and configuration. Confirm terminal count and connector shape. If the listing does not establish your application, compare the original part number or consult a reliable vehicle-specific parts catalog.
Can a wrong IAC valve cause problems?
A mismatched valve may not connect or mount correctly, or may not provide the intended idle-air control. If idle problems persist after a replacement, the valve may not be the only cause. Verify fitment and consider other parts of the intake and idle-control system before assuming the IAC is responsible.
Frequently Asked Questions
Is every 5.7L IAC valve compatible with a 350 TBI?
No. Match the vehicle application, connector, mounting, and part number. Engine displacement alone is not enough to establish compatibility.
Which listed product gives the clearest GM truck fitment details?
The KAX listing names multiple Chevrolet and GMC truck applications and specifies some 5.7L fitments. Confirm the exact vehicle year and configuration.
Does the Walker 215-1003 fit all 350 TBI vehicles?
The supplied details do not establish that. Check the exact vehicle through the product fitment tool before buying.
Can I use the Ford IAC and TPS set on a GM 350 TBI?
No such GM application is listed. The product is specified for certain Ford vehicles, so it should not be treated as a GM replacement.
What details should I compare before ordering?
Compare year, make, model, engine, fuel-injection configuration, connector, mounting, and original part number. Verify the full application rather than relying on a general 350 or 5.7L label.