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Chevy Silverado / GMC Sierra HD Trucks with Duramax LLY Diesel V8 Engines Can Boost Power

Shown here in red, is the 9980, Spectre Performance Air Intake System for 2004 and 2005 Chevrolet Silverado and GMC Sierra 2500 / 3500 HD with LLY Duramax 6.6-liter Diesel

Shown here in red, is the 9980, Spectre Performance Air Intake System for 2004 and 2005 Chevrolet Silverado and GMC Sierra 2500 / 3500 HD with LLY Duramax 6.6-liter Diesel

Spectre Performance has recently released a trio of new air intake systems for 2004 and 2005 Chevrolet Silverado 2500 / 3500 HD pickups and its counterpart the GMC Sierra 2500 / 3500 HD equipped with the 6.6-liter Duramax Diesel LLY code engine. The Spectre Performance 2004 and 2005 Chevy and GMC Duramax Diesel intake systems are available with three air filter colors. Air intake number 9980 features a red-media air filter, 9980B includes a blue-media air filter, and 9980K uses a completely black air filter.

2004 and 2005 Chevrolet Silverado and GMC Sierra 2500 / 3500 HD with LLY Duramax 6.6-liter Diesel V8 engines can boost power for towing or every day driving

2004 and 2005 Chevrolet Silverado and GMC Sierra 2500 / 3500 HD with LLY Duramax 6.6-liter Diesel V8 engines can boost power for towing or every day driving

Color choices for these Duramax air intake systems come in the form of Spectre High Performance Racing (HPR) universal cone air filters. The diesel HPR air filters used in these kits are specifically designed for the airflow and filtration needs of a turbo diesel engine. These air filters can be serviced when dirty, using part number 884820, and used again.

All three Spectre Performance air intake system part numbers for the 2004-2005 Duramax Diesel are designed to add horsepower and torque without compromising engine protection from harmful debris. These air intake systems use a high quality polished aluminum intake tube to direct air into the engine. They also include a heat shield, finished in a textured black powdercoat, to help reduce the amount of hot air entering the air filter. These intakes include all necessary components and can be installed using basic hand tools for a true bolt on performance upgrade.

Spectre Performance Air Intake System, 9980, is designed to add horsepower, torque, and a custom look to 2004 and 2005 Chevy / GMC Duramax Diesel LLY V8 engines

Spectre Performance Air Intake System, 9980, is designed to add horsepower, torque, and a custom look to 2004 and 2005 Chevy / GMC Duramax Diesel LLY V8 engines

General Motors made a mid-year engine change in 2004; as a result this air intake system only fits 2004-2005 Duramax Diesel engines with the LLY engine code. Please check your engine code before purchasing. If assistance is required please feel free to call Spectre Performance at 909-673-9800.

Spectre Performance Air Intake Systems, 9980, 9980B, and 9980K are designed to increase horsepower and torque on the Chevrolet and GMC models listed below:

2005 GMC SIERRA 3500 6.6L V8 DSL
2005 GMC SIERRA 2500 HD 6.6L V8 DSL
2005 CHEVROLET SILVERADO 3500 6.6L V8 DSL
2005 CHEVROLET SILVERADO 2500 HD 6.6L V8 DSL
2004 GMC SIERRA 3500 6.6L V8 DSL - LLY
2004 GMC SIERRA 2500 HD 6.6L V8 DSL – LLY
2004 CHEVROLET SILVERADO 3500 6.6L V8 DSL - LLY
2004 CHEVROLET SILVERADO 2500 HD 6.6L V8 DSL – LLY

Since 1983 Spectre Performance has designed and offered unique, innovative, parts and components to fuel your car or truck obsession. Whether your fixation happens to be a classic muscle car or a modern diesel burning heavy-duty pickup, Spectre will help fuel the passion for performance burning within.

Browse all Spectre automotive products by category at SpectrePerformance.com.  While you are there use the Products by Vehicle Search to find Spectre performance products specifically made for your vehicle.  To find a Spectre dealer near you use the Spectre Dealer Locator.


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For over 30 years Spectre has been obsessed with cars, racing and speed. Since 1983 Spectre has designed and offered unique and innovative parts and components to fuel your obsession with your car or truck. For more information, visit spectreperformance.com.