Fuel Rail Plug For 2001-2004.5 Chevrolet Silverado 2500HD/3500HD;GMCSierra 2500HD/3500HD 6.6L Duramax LB7 Pressure Relief Valve (M18 1.5 and M16 1.5) Stainless steel 304 CMC. For 2001-2004.5 Chevrolet Silverado 2500HD/3500HD;GMC Sierra 2500HD/3500HD 6.6L Duramax LB7.
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