$645.20
Built for heavy-duty electrical demands; exact factory fitment.
GM
Duramax
2007.5-2010
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Replacement for single relay systems; restores grid heater function.
Direct-fit; monitors crank position for ECM timing.
Reliable cold starts; high-output design.
Faster cranking speeds; durable housing; compact design.
Subtotal: $719.11
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