Service bulletins for the 2019 Peterbilt 520
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.
43 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Cooling system are shown. Show all
| 45-061 | 2019-06-11. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; EQUIPMENT ADAPTIVE/MOBILITY. Non-Safety Campaign: Identified Model 520 vehicles, equipped with natural gas engine, were built with a compressor supply hose with reinforced spring that could break loose and cause internal engine damage. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.