2024 Duramax Oil Filter Cross Reference. Attached pictures of the oil filters compared, the 1441 was the previous l5p filter and the b329 is the 2020 and up filter. 2 of mine run delo 5w40 year round and the newest one i'm trying the ultra.
Equates 70% more specially engineered than stock. 2024 chevy silverado/gmc sierra 2500hd/3500hd l5p duramax diesel.