GESi replacement DOC for Cummins / Paccar (4353221 / GESI-513)

This new aftermarket DOC is a direct replacement for the OEM unit. This filter is built by GESi under the DPFXFIT brand, and includes the required clamps and gaskets. DPFXFIT backs this product with a two year unlimited mileage warranty. This DOC is a direct replacement for 1837303PE, 1978264PE, 2871577NX, 4353221NX, 5298349NX Other Replacements available: SKY XN0610-K Can not be sold or shipped to California at this time.