Replacement for Cummins ISM DOC / Catalyst (5287521 / REP 58804)

This Redline Emissions Products DOC Catalyst Replacement (REP 58804) for Cummins is a direct replacement for the OEM number(s) listed below. 

OEM: 4965223NX, 5287521, A035H536, 5287520, 4965217 also replaces models / brands: Durafit C20-0004, Skyline D-CEXH-MN-0403-K and Roadwarrior C043-ID, C0043-ID

New, no core required. 

Uses (2) REP G22007 Gaskets (included)

Uses (2) REP VB2003 clamp (not included)

Comes with a 2-Year, Unlimited Mile Warranty.

OEM Part Numbers=4965223; 5287521; 4965217; 5287520

Engine Type=ISM

Gasket=G22007

V-Clamp=VB2003