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Old 07-29-2007, 06:20 PM
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I went to and entered those Ford engineering numbers into the [Non-Napa Part Number] field and pressed [Go] ...
These are the results.

# E3TB 9345 A2A -- Fuel Pump Relay
Napa Echlin Part Number: AR-240

Features & Benefits:N.O. Terminals 3-4 @ 35 Amps; N.C. Terminals 3-5 @ 20 Amps; Coil Terminals 1-2
# of Terminals:5


# E3AF-12A646-B2A -- EEC Power Relay
NAPA Echlin Part Number: AR-242

Features & Benefits:N.O. Terminals 3-4 @ 25 Amps; N.C. Terminals 3-5 @ 15 Amps; Coil Terminals 1-2
# of Terminals:5


Just for fun ... I also went to (Ford's own) and tried to c/ref them there ... and no go!

I used to sell a ton of both of these relays, and used to know the Motorcraft numbers off the top of my head ... but that's gone now.

These relays are used for a multitude of different applications and functions.
For example, 87-91 F-Series pickups used one of each side-by-side under the hood for fuel pump/EEC purposes as well.

Edit / Add-on:
Regarding the suffix on those Ford engineering numbers (-A1A, -A2A ... etc)
The DIGIT (1,2) an usually be ignored. It usually indicates a minor revision or a supplier change. In other words ... E3TB-9345-AA is the same as "E3TB-9345-A1A and A2A".

Last edited by 66GMC; 07-29-2007 at 06:33 PM.
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