Part identification

Hi. Can anyone identify this part? It is for an 87 cavalier rs 2.0. Thanks.

20211119_182725

That’s the throttle body with the fuel injector mounted on top.

Tester

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Thank you so much. I thought of that but one fuel injector? I never thought that was possible.

Transitional from carburetor to throttle body to full injection system.

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That technique was pretty common in the late 80’s, early 90’s, called “throttle body injection”. There’s a mechanic’s joke about one of the version’s name, “cross fire injection”, instead should be called “cease-fire injection” … lol … Throttle body injection is not used much these days. Modern cars use either “port injection”, where there’s an injector for each cylinder, injecting into the intake area; or “direct injection”, again an injector for each cylinder, but injecting into the combustion chamber.

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That was a very common design in the mid-1980’s to mid-1990’s. The single-point fuel injection provides excellent performance and fuel economy compared to a carburetor, and cost a lot less to implement than multiport fuel injection. The Dodge Spirit/Plymouth Acclaim and Dodge Shadow/Plymouth Sundance were very common cars, which used this type of fuel system.

Our ‘95 Suburban had it, ran great throughout an Anchorage winter, way better than a carb.