Made in USA
Polylock Stud Diameter: 3/8 in.
Product Discontinued
LUNATIPART NUMBER: 638-84380-1

Polylock Stud Diameter: 3/8 in.

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Polylock
  • Stud Diameter: 3/8 in.
  • Outer Diameter: .600 in.
  • Sold Individually

    LUNATI/HOLLEY 84380-1 Features:

    Polylocks have a built-in locking mechanism that securely fastens the rocker arm to the stud. Lunati Polylocks are tapered for added strength in the locking mechanism and precisely ground to minimize runout.
    • Part TypeRocker Arm Nut
      BrandLUNATI
      Package Height2.5
      Package Width5.25
      Package Length26.0
      Weight0.5 PG
      Part CategoryPerformance Parts
      Stud Size 3/8 in.
      Rocker Arm Nut StylePolylock
      For Use With Stud GirdleNo
      QuantitySold individually
      Part FitmentSemi Universal
      Outside Diameter0.6 in (15.2 mm)
      Rocker Arm StyleFull roller
      Vendor Part Number84380-1LUN
      Package Qty1
      Package TypeEA
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