Confused! Correct spark plug part no.?
#1
Confused! Correct spark plug part no.?
Quick question. Getting ready to order plugs from either 1stfordparts.com or fordparts.com
I have a 2004 Supercrew, 4x4, 5.4ltr. A prior poster listed the Motorcraft replacement plug part no. as SP-462. I contacted 1stfordparts by email, they responded by telling me the correct part no. is SP-421. I did provide them with my year no., VIN, etc.
Which is correct? What are the differences in these plugs? With the time and effort I'm putting into making sure I don't screw this project up, I want to make sure I have the right plug.
Thanks!
I have a 2004 Supercrew, 4x4, 5.4ltr. A prior poster listed the Motorcraft replacement plug part no. as SP-462. I contacted 1stfordparts by email, they responded by telling me the correct part no. is SP-421. I did provide them with my year no., VIN, etc.
Which is correct? What are the differences in these plugs? With the time and effort I'm putting into making sure I don't screw this project up, I want to make sure I have the right plug.
Thanks!