This is a 12V glow plug for 2001-2004 LB7 and 2004-2005 LLY Chevrolet/GMC 6.6L Duramax engines. This plug is a self-regulating design which allows for fast and safe startups. Eight glow plugs required per engine.
Note: 2006 and Later LLY engines use DRX00057 plugs
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