1997 GMC W3500 Forward equipped with 5.7L V8 Gas OHV, 3.9L L4 Diesel
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with 5.5in x 5.875in x 1in Core with 0.6875in Diameter Inlet with 0.6875in Diameter Outlet
1997 GMC W3500 Forward equipped with 5.7L V8 Gas OHV, 3.9L L4 Diesel
with 5.5in x 5.875in x 1in Core with 0.6875in Diameter Inlet with 0.6875in Diameter Outlet