{"nhtsa_id":11030930,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-07","date":"2026-03-21","document_id":"43-083","mfr_campaign":"43-083","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"Exhaust Stack Isolators - Early wear of the polyurethane exhaust stack isolators may occur on certain Kenworth chassis due to excessive heat. Early wear of the polyurethane exhaust stack isolators may occur on certain Peterbilt chassis due to excessive heat.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030930-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030930-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11030930","components":[],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T680","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_kenworth_t680","2025_kenworth_t680","2026_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_kenworth_t880","2025_kenworth_t880","2026_kenworth_t880"]},{"make":"KENWORTH","model":"W990","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_kenworth_w990","2025_kenworth_w990","2026_kenworth_w990"]},{"make":"PETERBILT","model":"567","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_peterbilt_567","2025_peterbilt_567","2026_peterbilt_567"]},{"make":"PETERBILT","model":"579","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_peterbilt_579","2025_peterbilt_579","2026_peterbilt_579"]},{"make":"PETERBILT","model":"589","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_peterbilt_589","2025_peterbilt_589","2026_peterbilt_589"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}