Here is a tip TomJ gave me on buying autozone plugs.

They have the correct Bosch plug for the 617, but their single part number refers to two different plugs pencil-type plugs. Both will work, but the one with a slightly tapered head will work better.

Since they have the same part number, ask if they will bring out a big handful so you can open them up and check for ones with the tapered head. If they don't have enough, or any of the tapered head, the rounded head works fine, it just isn't as durable.

And yes, 7.99$ each.

Peace,
Sam

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"That f***in' biodiesel is makin' me hungry."

1982 300TD Astral Silver w/ 250k (BIO BNZ)
2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG)