duramax-lb7-cup-o-ring Home / Chevy / GMC Duramax Injectors / LB7 2001-2004.5 / Chevy / GMC Duramax LB7 Accessories / LB7 Injector Cup/Sleeve O-Rings / duramax-lb7-cup-o-ring Written By Anna Mullen April 23rd, 2021 Share this...FacebookPinterestTwitterLinkedin