Genuine Mazda 3 Radiator Hose (Drivers Side).This hose fits on the drivers side of the radiator. Check your hoses every 15,000 miles. Use only genuine Mazda hose parts and accessories. Genuine Mazda 3 Accessories and Mazda 3 Parts offer the style, comfort, quality and satisfaction that make driving a Mazda 3 even more rewarding. Designed and guaranteed to fit your Mazda 3 perfectly inside and out, they are the only accessories built to the same quality standards as your Mazda 3.