ARP Perma-Loc Rocker Arm Adjuster - For Stamped Steel Rocker Arms - 3/8"-24 Thread R040004L The Fire-Retardant Cotton (FRC) component

The Fire-Retardant Cotton (FRC) component of the fabric promotes a soft and supple lightweight feel

Full 360-degree air channeling providing ultimate airflow

ARP stainless steel header studs are made from premium 300 stainless steel

1985-2003 Buick Century

ARP Perma-Loc Rocker Arm Adjuster - For Stamped Steel Rocker Arms - 3/8"-24 Thread R040004L The Fire-Retardant Cotton (FRC) componentA rocker arm adjuster that doesn't require special tools and won't work loose. Threads on the heat treated Perma Loc Adjusters are machined exactly perpendicular to the adjuster bottom. a set screw is also machined flush on the bottom. All of these features help eliminate setting valve lash on a regular basis. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline.