$41.03
CNC machined; black anodized; high-temp O-ring for a clean seal.
GM
Duramax
2001-2021
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Set of (6); essential for piston cooling/lubrication.
Direct OE-style replacement; restores factory balance and damping.
Reduces friction/wear; improves oil stability under load.
Handles higher boost pressures; prevents valve float.
Subtotal: $3,127.50
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