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I searched and didn't find any relevant results but I can't be the first one to have asked this....
Looking to buy a new wp for our '08 5.4. RA seems to indicate "hearts" next to all the 30mm threaded units, but the only Motorcraft they carry is 36mm
I measured the old pump from an '03 4.6 which is still sitting on my shop floor and it was 30mm, but I'm not sure an '03 4.6 2V is a great reference for an '08 5.4 3V LOL
Do I just need to pull my fan clutch and verify I guess?? Seems like a PITA just to order a wp....
An 08 3V 5.4 should use the 36MM hub. MotorCraft part number PW494 per Ford's public parts lookup.
That's kinda what I figured since it was the only MC offered at RA. No idea why the "heart" parts are the 30mm but perhaps their script looks at overall sales volume across many applications rather than just the '08 I was looking up.
Thank you for taking the time to research and reply!