I have 86 300SDL I purchased new in 86 and I have the orig. window sticker with codes. Code 494 is Calif. Emission Control Equip. Code 043 is Mandated Calif. Diesel Emissions Warranty ($350. mandated option - covered for 10yrs or 100,000 miles. This included the trap oxidizer and turbo. I don't live in Calif. but warr. was good nationwide.