Brand: Gates Automotive Products
This special rubber sleeve from Gates makes it easy to connect a 1.5" (38mm) ID coolant hose to a 1.25" (32mm) OD hose nipple. Great for engine swaps, radiator upgrades, and even installing electric coolant pumps.
Simply install the sleeve on the undersized fitting, then install your hose over the sleeve and clamp down as you normally would. Sold individually.
This is the smallest size reducer sleeve available.