2001-2019 Duramax Diesel 6.6L OEM Thermostat Pair - AC Delco

Experiencing a P01F0 check engine light on your Duramax? Well, that means it’s time to change those thermostats on your Duramax as they are likely stuck open. This is a super common issue with the Duramax Diesels.

This set is a OEM AC Delco replacement directly from GM! We normally have these in stock and ready to ship! Fits all 2001-2019 Duramax 6.6L 2500/3500HD trucks!

Duramax LB7 Thermostats

Duramax LLY Thermostats

Duramax LBZ Thermostats

Duramax LMM Thermostats

Duramax LML Thermostats

Duramax L5P Thermostats