For engines built before 1996, these catalytic converters have stainless steel ribbed bodies that minimize expansion/distortion when the converter heats up. The ribs form a channel that protects pads from direct exposure to exhaust gas, plus they keep the ceramic catalyst aligned. Rigid OE-type heat shields add structural stability, and strong 1/2" lap-joints fuse necks to the body (for best flow, necks don't extend into bodies). . 2. Determine the type of catalytic converter being replaced:
Choosing the Correct Catalytic Converter
1. Determine engine size and vehicle weight (there are legal limit regulations).
2. Determine the type of catalytic converter being replaced:
Note: 49-State Catalytic Converters are not legal for sale, installation, or use on licensed vehicles in the state of California.