Moroso 63309 - Radiator Cap, 9 Lb.

Racing Radiator Cap Standard Size Radiator Filler Necks 8-10 lbs. Stainless Steel Spring Incl. Solid Brass Spring Retainer Fits: Standard-size radiator filler necks, including Moroso Nos. 63420, 63465, 63466, 63467, 63485, 63486, 63650, 63651, 63656, 63730, 63740, and 63745 • Available with low and high pressure raitings to accommodate the needs of all cooling systems • Steel spring maintains accurate pressure setting over time • Six-sided Cap for easy tightening