When a person buys a product there is an implied warranty of fitness of purpose, which is even more predominate if the product requires factory (manufacturer) or dealer installation. The buyer, relying on the dealer's knowledge and guidance, may assume under U.S. law that the product meets the suitable goods clause to meet the buyer's particular purpose or requirements of UCC § 2-315
"The principal of fitness for purpose is basic and must be present in the article supplied regardless of the limitations surrounding a sale by sample or by description."
[Loomis Bros. Corp. v. Queen, 1958 Pa. Dist. & Cnty. Dec. LEXIS 269, 4-5 (Pa. C.P. 1958)
the dealer in this case advised the buyer before sale that the product was not suitable for their specific application and usage, would the dealer provide some
manner of defense against liability. I say some, because a smart dealer would realize the potential of liability claim and not have installed a camper that exceeded the vehicles specifications in the first place.
2019 Ram 1500 Billet Silver Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, factory dual exhaust, 18” wheels. Build date: 3 June 2018. Now at 82657 miles