XDP X220 Series Head Stud Kit XD3006HSThe XDP X220 Series Head Stud Kit XD3006HS is a must have for your high performance 2001 2016 GM 6. 6L Duramax LB7 LLY LBZ LMM LML. The OEM head bolts typically can't handle the pressure from high horsepower applications. Constructed using 8740 Chrome Moly with an added proprietary element ensures these studs are more durable and will not stretch like the factory bolts. The threads are rolled after heat treating to deliver optimum fatigue strength.
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