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The factory EGR setup recirculates hot exhaust gases back into the intake
4L 4" Turbo Back Exhaust w/ Muffler (421010)
The stock Garrett cover has been milled out to accept a larger 64mm compressor wheel
The Pro Series is built from T304 stainless steel that offers unbeatable durability
EGTs will drastically decrease
2007.5-2018 Cummins 6.7L 68RFE 4C Retainer (R72978AHP) 1989 - 1998 Dodge Additives & Oils The factory EGR setup recirculatesThis stainless steel retainer is designed to fit Dodge Cummins 68RFE engines from model years 2007. 5 to 2018. Its stainless steel construction offers superior durability and strength, making it an ideal choice for those looking for a reliable and long lasting solution. Upgrade your 68RFE's 4C snap ring with this billet steel unit, removing the failure prone factory retainer from allowing the snap ring to pop out of its grove.
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