Engine Rocker Arm 
7/16"-20-Thread Poly-Lock

.550 " Outside Diameter; Not for use w/ Stud Girdles
Designed to Fit Most Extruded Roller Rocker Arms
  • Heavy Duty Stud Mount Model
  • Made from High-Quality Aluminum
  • Polished Finish
  • Fits Chevy V8/V6 Engines
  • Stud, Nut and Washer Included
  • Sold Individually
PART# 66985
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Engine Rocker Arm Poly-Locks; 7/16 Thread; Fits Most Extruded Roller Rocker Arms

  • Heavy-Duty Machined Aluminum.
  • Fits Chevrolet.
  • S/B, V6/90, B/B.
  • Includes Clamp, Stainless Steel Stud, Nut and Washer.