why would my 2018 have a napa 21372mp oil filter that fits fords only? I was told it crosses to pf63. I tried the napa 7202 and the gasket surface on 7202 is about 1" bigger in diameter.
JXX
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9,978 Posts
2018 duramax diesel owners manual supplement calls for PF2232
![Image]()
Techlink says 2020 and up recommendation is updated to PF63
Duramax Diesel Engine Oil Filter Update for 2023
September 20, 2022
The PF63 engine oil filter (Fig. 5) is the new recommended filter specification for 2020-2023 Silverado 2500HD/3500HD, Sierra 2500HD/3500HD, Express, Savana; and 2019-2023 Silverado 4500/5500/6500 models equipped with the 6.6L Duramax diesel engine (RPO L5P, L5D).
![Image]()
Fig. 5
The PF63 engine oil filter will be the factory-installed filter for applicable 2023 models equipped with the 6.6L Duramax diesel engine (RPO L5P). The current PF26 engine oil filter also is compatible with these diesel engines. (Fig. 6)
![Image]()
Fig. 6
The PF63 filter is 3/4 inches (19 mm) narrower than the PF26 filter, but it has a taller pleat height, which maximizes volume efficiency and cold flow performance. (Fig. 7)
![Image]()
Fig. 7
Service Information and the Parts Catalog will be updated shortly. For more information and part numbers, refer to #PIP5870.
Techlink says 2020 and up recommendation is updated to PF63
Duramax Diesel Engine Oil Filter Update for 2023
September 20, 2022
The PF63 engine oil filter (Fig. 5) is the new recommended filter specification for 2020-2023 Silverado 2500HD/3500HD, Sierra 2500HD/3500HD, Express, Savana; and 2019-2023 Silverado 4500/5500/6500 models equipped with the 6.6L Duramax diesel engine (RPO L5P, L5D).
The PF63 engine oil filter will be the factory-installed filter for applicable 2023 models equipped with the 6.6L Duramax diesel engine (RPO L5P). The current PF26 engine oil filter also is compatible with these diesel engines. (Fig. 6)
The PF63 filter is 3/4 inches (19 mm) narrower than the PF26 filter, but it has a taller pleat height, which maximizes volume efficiency and cold flow performance. (Fig. 7)
Service Information and the Parts Catalog will be updated shortly. For more information and part numbers, refer to #PIP5870.
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