GooDeal 8pcs Glow Plug for 2001-2005 Chevy GMC 6.6L Duramax LB7 & Early Build LLY Replacing OE#: 97226202, 800381113, 97364968, DRX0058 Extremely short pre-heating time: from 2 seconds Reliable starting (even at -30 C!) Can be used for post-heating, as a result environmentally friendly: up to 40% less pollutant emissions during the warm up phase. Protects the engine during starting.