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Est. 1957
ARP

ARP GM Duramax LMM 6.6L 12PT SS (street) thermostat housing bolt kit

$49.77

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Worn thermostat housing bolts can leak coolant. This ARP kit replaces them with strong, stainless steel fasteners.

Key Features

  • 12-point head design — allows for easier installation in tight spaces.
  • Stainless steel construction — resists rust and corrosion for a long-lasting seal.
  • Direct replacement — fits GM Duramax LMM 6.6L engines.
This ARP thermostat housing bolt kit is designed to fit GM Duramax LMM 6.6L engines.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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ARP GM Duramax LMM 6.6L 12PT SS (street) thermostat housing bolt kit

$49.77