540 Cylinders

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540's

AEIO540 Wide Deck (Engine s\n ends with the letter "A")

D4A5, D4B5

IO540 Narrow Deck (Engine s\n ends with no letter)

C1B5, C1C5, C2C, C4B5, C4C5, D4A5, D4B5, N1A5

SR = Short Reach Spark Plug • LR = Long Reach Spark Plug

IO540 Wide Deck (Engine s\n ends with the letter "A")

C4B5, C4B5D, C4D5, C4D5D, D4A5, D4B5, D4C5, N1A5, N1A5D, T4A5D, T4B5, T4B5D, T4C5D, V4A5D

SR = Short Reach Spark Plug • LR = Long Reach Spark Plug

O540 Narrow Deck (Engine s\n ends with no letter)

O540 Wide Deck (Engine s\n ends with the letter "A")