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LLY Maintenance Kit
LLY Injector Kit
LLY Fuel Filter
LLY Pigtail
LLY Air Filter
LLY Oil Filter

150K Mileage Maintenance Kit for LLY 6.6L Chevrolet GMC Duramax

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These injectors are remanufactured using all new BOSCH control valves and nozzles. They are calibrated to original OEM speicifications and are a direct replacement. 

These are Chevrolet brand injectors remanufactured in our facility in Memphis and are calibrated on the MakTest machine utilizing "clean room" technology.

This kit includes 2 return line kits, 8 LLY fuel injectors, 8 glow plugs, 1 oil filter, 1 fuel filter adapter kit, 1 air filter panel, 4 injector connector harnesses.

Due to the performance application of this kit, these parts carry a one year replacment only warranty. This product contains an item which is sold exchange, meaning the old unit, or 'core' must be returned within 35 days of order shipment. For more information regarding our core and warranty policies please visit

Interchangeable Part Number Information: 

97303657 , 97780144 , 0 986 435 504 , 0986435504 , 0 445 120 027 , 0445120027    6.6    66   6 6