Recipe - Ford 7.3L Godzilla Gasoline (Super Duty 2020+, E-Series cutaway 2021+)
Reliability build
Reliability tier: verified - verify before ordering, see /disclosure/
Ignition service for the 7.3L Godzilla (mode Ignition service wear (plugs / coils)): 16 plugs on the 2v SOHC V8, one coil per cylinder. Coils split by year (2020-22 LC3Z vs 2023+ PC3Z) - confirm the window before ordering. Full-set plugs at the interval, swap-test suspect coils.
Parts
- 7.3L/6.8L Godzilla Spark Plug (OEM) - spark plug, one per cylinder (CYFS-12Y-T6) (qty 16)
- 7.3L Godzilla Ignition Coil, 2020-2022 (OEM) - coil, 2020-2022 (LC3Z-12029-B) (qty 1)
- 7.3L/6.8L Godzilla Ignition Coil, 2023+ (OEM) - coil, 2023+ (PC3Z-12029-AA) (qty 1)
Install order
- read misfire counters; locate the dead cylinder
- swap-test the suspect coil to a good cylinder before buying
- renew all 16 plugs at the interval, gap per spec
Expected outcome
Clean idle, no misfire counters.
Do not
- do not mix coil PN windows - 2020-22 and 2023+ are different parts
Parts budget
About $120-$200 in parts. It depends on what the diagnosis finds; each option below is what you buy together. Prices marked "at Dave's" are Dave's Auto Center's, the same as in his store; the others are approximate prices from OEM and maker catalogs, rounded (a manufacturer's list price can run higher). Parts only, no labor.