5749-050R 3/0 - 4/0 Gauge Tab Insulator Terminal Protector Red (Terminal OD 1.37") (50 Pack) - These protect your alternator and electrical system from damaging shorts and reduces the risk of the battery exploding due to sparks. Color coded for easy polarity identification. Constructed from PVC and heat rated to 190º F (88º C). Conforms to SAE J1128 dielectric specifications and meets U. S. Coast Guard requirements.
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov