Attention: If you have a GM Duramax, please verify your engine type before ordering any product. You will either have an LB7, LLY, or LBZ motor, many of the products we offer are not interchangeable with all three engines. To Verify: Check the 8th digit in the VIN number, If it's a 1 you have the LB7 motor If it's a 2 you have the LLY motor
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