Hey Lincoln MKS owners with the 3.5L turbo engine! If your check engine light's on for catalytic converter codes P0420/P0430, or you're failing emissions, this pair of cats might be your fix. Brand new from exc, these are direct bolt-on replacements for BOTH sides (left and right) – part numbers match OEM 12H19533 and 12H19534. They're EPA certified and designed for 100% accurate fit – no drilling or welding needed, just bolt them up. Include pre- and post-cat oxygen sensor ports. IMPORTANT: These are NOT legal for sale or use in California due to stricter emissions rules (check your state laws!). They come with a manufacturer's warranty and weigh about 10 lbs each. Installation's straightforward if you're handy with exhaust work – just support the exhaust, unbolt the old ones, swap in these new ones, and reconnect the O2 sensors. Fixes poor performance, rotten egg smells, and helps your MKS pass inspection. Get your turbo Lincoln running clean and efficient again!