Part numbers listed below indicate interchangeable parts. These parts share the same size, parameter, function and compatibility. However, please note that items from different brands may have minor variations.
16399, 16-399 - MAGNAFLOW EXHAUST PRODUCTS, WALKER EXHAUST
16400, 16-400 - WALKER EXHAUST
17171, 17-171 - DAVICO MFG
17172, 17-172 - DAVICO MFG
40746, 407.46 - EASTERN CATALYTIC