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Recipe - Ford 7.3L Godzilla Gasoline (Super Duty 2020+, E-Series cutaway 2021+)

Reliability build

Reliability tier: aggregated - verify before ordering, see /disclosure/

Cooling service for the 7.3L Godzilla: pressure-test, then water pump and thermostat as wear items, pump numbers split by year (mode Cooling service (water pump / thermostat / degas)).

Parts

• 7.3L/6.8L Godzilla Thermostat (OEM) - thermostat, all years (qty 1)
• 7.3L Godzilla Water Pump 2020-2022 (LC3Z-8501-A) - water pump, 2020-2022 (LC3Z-8501-A) (qty 1)
• 7.3L/6.8L Godzilla Water Pump, 2023+ (OEM) - water pump, 2023+ (qty 1)

Install order

1. pressure-test the system; inspect the water pump weep hole and bearing play
2. check thermostat opening under load before replacing the radiator
3. replace the pump for the truck's year window if it weeps or has play; refill and bleed

Expected outcome

Stable temperature under tow, no weep, steady degas level.

Do not

• do not mix the 2020-2022 and 2023+ water pump numbers

Parts budget

About $25-$210 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.

• about $25: 7.3L/6.8L Godzilla Thermostat (OEM) (about $25)
• about $160: 7.3L Godzilla Water Pump 2020-2022 (LC3Z-8501-A) (about $160)
• about $210: 7.3L/6.8L Godzilla Water Pump, 2023+ (OEM) (about $210)

DIY or shop: DIY or shop