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1975-1976 Ford Bronco V8 Emissions & Vacuum Hose Routing Exploded Parts Diagram

Exploded parts diagram of engine emissions and air injection hoses, valves, carburetor spacers, and gaskets with part numbers.

AI caption · Photo 79 of 206

This scanned Ford factory-style exploded parts illustration (marked "Numbers for reference use only, COPYRIGHT FoMoCo") depicts emission-control and vacuum system components on a V8 engine. The top illustration shows vacuum hose routing across the top of the engine and carburetor, with base part-number callouts including 8A564, 9E455 (vacuum hoses, some marked with a star), 18599, 9D473, 12A091, and hardware/clip part numbers 373846-S (II-191-Q) and 384111-S (II-106-VA). A left detail (view A) shows a pump-type component identified as 9A427 or 9A435. A lower-left side view of the engine shows hose 9E488, fitting 9A428, and hardware 385390-S (II-106-WG) noted for 1975 and 386901-S (II-232-G) noted for 1976. The right detail (view B) is an exploded stack-up at the carburetor showing carburetor 9510, EGR valve 9D475, screw 57635-S, spacer/gasket components 9C477, 9D476, 9A589, and 9447. The year notations (1975/1976) indicate this page covers 1975–1976 applications. A reader can learn the arrangement and Ford base part numbers of the EGR valve, carburetor spacer, gaskets, and vacuum hose routing for servicing or restoring the emissions system.

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Frequently asked questions

What part number is the EGR valve shown in this diagram?
The EGR valve in view B carries base part number 9D475, mounted with screw 57635-S adjacent to spacer/gasket parts 9D476, 9C477, 9A589, and 9447 at the carburetor (9510).
Which part numbers differ between 1975 and 1976 in this diagram?
The diagram lists 385390-S (II-106-WG) for 1975 and 386901-S (II-232-G) for 1976 at the same location on the lower engine view.
What part numbers are given for the pump component in view A?
View A identifies the pump-type component as 9A427 or 9A435.
What vacuum hose part numbers are shown in the routing diagram?
The top routing view calls out hoses 9E455 (appearing multiple times, some starred), plus components 8A564, 18599, 9D473, and 12A091, with hardware 373846-S (II-191-Q) and 384111-S (II-106-VA).
Are these actual Ford service part numbers?
The footer states "Numbers for reference use only, COPYRIGHT FoMoCo," so they are Ford base/reference numbers rather than full orderable part numbers.

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