Holden 3 port thermal vacuum switch (sometimes also called a TVS, EFE or DCM switch & EGR tree) part number 3029763. I would expect it to fit red blue & black pollution motors fitted in HQ HJ HX HZ WB also Commodore VB VC VH VK VL & Torana LH LX UC both 6 cylinder & V8 2.8 3.3 202 253 304 308 4.2 4.9 5.0. Mounts to the front of the inlet manifold on V8's & to the upper thermostat housing on 6's. Best you check this suits your application before buying.
The switch visibly appears in good condition with no broken vacuum ports and good mounting thread. It is in need of a clean and has some signs of age from years of use. Its working condition is unknown, I don't know how to test it but would be happy to, if you tell me how. Usually this is an essential item when trying to pass roadworthy pollution & emission requirements.
What's in the photo's is what it is and what you get. Ask if you want more photos or info.
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