Service bulletins for the 2021 Kenworth T680
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.
83 on file from NHTSA, as of 2026-10-19.
By type
By component
By topic
Only bulletins with component: Body and frame are shown. Show all
| 02-206 | 2026-10-01. Service bulletin. STRUCTURE:BODY. Certain T680 Next Gen short hood chassis may be missing a bolt in the forward fairing. |
|---|---|
| 04-024 | 2024-06-04. Service bulletin. STRUCTURE:BODY. Campaign Certain T680 Next Gen fairings may have a loose or missing bushing that allows the rear partial fairing to rattle during operation. Parts and procedures are available to replace the pin on the fairing (both sides) with a bolt/spacer combination to reduce fairing rattle. |
| 04-022 | 2023-10-03. Service bulletin. STRUCTURE. Replacement fuel bezels are available for T680 Next Gen fairings. New bezels have updated attachments to prevent the bezel from becoming loose. |
| 02-176 | 2023-05-05. Service bulletin. STRUCTURE. T680 NextGen A-pillar fairing adhesive is not properly securing the fairing to the A-pillar. Procedures are available to apply new adhesive to the A-Pillar fairing. |
| 02-168 | 2021-10-05. Service bulletin. STRUCTURE. Information Only - Rear axle Quarter Fenders with less than two inches of clearance between the top of the quarter fender and the bottom of the trailer/equipment are susceptible to damage. The lack of clearance could result in cracked/broken quarter fenders or complete separation if undetected or un-remedied. |
| 02-163 | 2021-08-05. Service bulletin. STRUCTURE; EQUIPMENT. "Non-Safety Campaign - A vinyl camouflage wrap was applied to T680 NextGen built during the pre-production phase of the product launch. The wrap can now be removed." |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.