MRDS-100HP High Performance LS Rocker Arm Stud GM LS
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MELLINGPART NUMBER: 689-MRDS-100HP

MRDS-100HP High Performance LS Rocker Arm Stud GM LS

$3999
ShippingShips on Sep 03, 2026
Lowest PriceLowest Price Guarantee

High Performance LS Rocker Arm Stud
  • GM LS

    Melling MRDS-100HP Features:

    Melling recommends new rocker arm studs with every engine rebuild. Old studs are subject to metal failure, stud stretching, and worn threads. Studs also tend to be lost or damaged during the rebuilding process. There is also a danger of metal cracking when the old rocker arm stud is removed from the head. Melling rocker arm studs are manufactured to high quality and material standards. Using new rocker arm studs assures proper installation and valve train adjustment.

    • End 1 Thread Diameter: 0.375 in.
    • End 1 Thread Type: Fine
    • End 2 Thread Diameter: 0.315 in.
    • End 2 Thread Type: Coarse
    • Grade Type: Performance
    • Length: 2.332 in.
    • Material: High-Stength Premium Grade Steel
  • Part TypeRocker Arm Stud
    BrandMELLING
    Package Height1.5
    Package Width1.5
    Package Length2.332 in.
    Weight1.02 PG
    Part CategoryPerformance Parts
    End 2 Thread TypeCoarse
    End 1 Thread Diameter0.375 in.
    End 1 Thread TypeFine
    End 2 Thread Diameter0.315 in.
    MaterialHigh-Stength Premium Grade Steel
    Part FitmentDirect Fit
    Grade TypePerformance
    Vendor Part NumberMRDS-100HP
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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