Dayco SAE J20 R1 Silicone Straight Coolant Hose ~2.5" ID x ~36" - New

Application: Dayco SAE J20 R1 silicone straight coolant hose for marine and industrial diesel engine cooling systems — radiator, heat exchanger, aftercooler, and expansion tank plumbing. Heavy-duty silicone construction with reinforced wall, rated for glycol coolant and high underhood/engine-room temperatures. Approximately 2.5 in ID by ~36 in length (verify with calipers). Condition: New / new old stock; light shelf dust on cover, clean bore, no cracks or dry rot. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase.