1994-2018 Cummins 5.9L/6.7L Replacement O-ring Kit for Cummins Coolant Bypass Kits (FPE-CLNTBYPS-CR-ORING-KIT) Tuning & Electronics The result: improved airflow (up

The result: improved airflow (up to 40%) and durability

HSP Diesel identified these weak points and built a superior solution that maximizes efficiency without sacrificing reliability or fitment

effectively extending the life of both your Injection System and Injectors

105 valve springs and steel retainers

1994-2018 Cummins 5.9L/6.7L Replacement O-ring Kit for Cummins Coolant Bypass Kits (FPE-CLNTBYPS-CR-ORING-KIT) Tuning & Electronics The result: improved airflow (up1994 2018 Cummins 5. 9L 6. 7L Replacement O ring Kit for Cummins Coolant Bypass Kits (FPE CLNTBYPS CR ORING KIT) Replacement O ring Kit for all Fleece Cummins Coolant Bypass. When used with MY94 MY2002 kits, not all O rings will be utilized.