HealeyBob60 Report post Posted July 31, 2022 What is the filter looking canister next to the oil filter on a cummins ISL? 2003 vintage. Share this post Link to post Share on other sites
campcop Report post Posted July 31, 2022 A picture would help. It could be the fuel filter or fuel/ water separator. Is it back plastic? Share this post Link to post Share on other sites
wildebill308 Report post Posted August 1, 2022 What is the number on it? Bill Share this post Link to post Share on other sites
rayin Report post Posted August 2, 2022 (edited) That is where the coolant filter is on my engine. If the coolant is the new OAT type a plain filter is used. If the coolant is the OEM green type a pre-charged filter must be used. Edited August 2, 2022 by rayin Share this post Link to post Share on other sites
jleamont Report post Posted August 3, 2022 On 8/1/2022 at 8:31 PM, rayin said: That is where the coolant filter is on my engine. If the coolant is the new OAT type a plain filter is used. If the coolant is the OEM green type a pre-charged filter must be used. YUP, coolant filter. Share this post Link to post Share on other sites
