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Thumbnail Filmstrip of L5P Duramax High Flow Intake Horn Fleece FPE-L5P-INTAKEHORN Images
Unlock your L5P Duramax's full potential with the Fleece FPE-L5P-INTAKEHORN High Flow Intake Horn, the essential bolt-on upgrade for your 2017–2019 6.6L engine. The stock plastic intake runner is a major airflow bottleneck, measuring a restrictive 2.4 inches in diameter. Our innovative, high-performance cast aluminum intake horn directly replaces that limitation with a significantly larger 3.3-inch diameter design. This immediate increase in volume and flow area reduces restriction and provides a smoother path for air to reach the turbocharger, which in turn leads to improved engine performance, torque, and efficiency. You'll feel the difference on the road with an immediate increase of up to 10 additional Rear Wheel Horsepower (RWHP), without requiring any tuning or modifications.
- Significant Airflow Improvement: Directly replaces the small, restrictive OEM plastic horn with a much larger 3.3-inch diameter cast aluminum component, allowing your turbocharger to breathe easier and more efficiently.
- Proven Performance Gains: This high-flow design is engineered to deliver a measurable power increase, netting you up to 10 RWHP for better acceleration and towing capability.
- Advanced Anti-Surge Technology: Features an integrated anti-surge face that engages the turbo compressor cover to optimize airflow and prevent pressure surges, enhancing both performance and turbo longevity.
- Simple, No-Fuss Installation: This is a direct replacement for the stock GM intake horn, requiring no modifications or tuning for a quick, straightforward upgrade.
- Engineered for Durability and Integration: Constructed from durable cast aluminum for superior strength compared to the factory plastic. It also includes a threaded billet aluminum port for the PCV (Positive Crankcase Ventilation) system to maintain emissions compliance.
- Future-Proof Design: Its larger volume and smoother flow make it an ideal complement to stock turbos while also being perfectly compatible with larger, upgraded aftermarket turbochargers.
- Backed by Quality: Covered by a 1-Year Limited Parts Warranty.
By prioritizing optimal airflow, the Fleece High Flow Intake Horn acts as a vital component in maximizing your Duramax's combustion efficiency. The smoother, less-turbulent air delivery to the turbo means the engine works less to produce power, translating directly into increased horsepower and torque alongside potential improvements in fuel economy. This isn't just a basic replacement; it's an expertly engineered component designed to eliminate the most significant flow restriction in your intake system, ensuring that whether you're running a stock setup or planning a full performance build, your engine is always receiving the clean, uninhibited airflow it needs to perform at its peak. Are you ready to unleash the true power and efficiency of your L5P Duramax?
Unlock your L5P Duramax's full potential with the Fleece FPE-L5P-INTAKEHORN High Flow Intake Horn, the essential bolt-on upgrade for your 2017–2019 6.6L engine. The stock plastic intake runner is a major airflow bottleneck, measuring a restrictive 2.4 inches in diameter. Our innovative, high-performance cast aluminum intake horn directly replaces that limitation with a significantly larger 3.3-inch diameter design. This immediate increase in volume and flow area reduces restriction and provides a smoother path for air to reach the turbocharger, which in turn leads to improved engine performance, torque, and efficiency. You'll feel the difference on the road with an immediate increase of up to 10 additional Rear Wheel Horsepower (RWHP), without requiring any tuning or modifications.
Significant Airflow Improvement: Directly replaces the small, restrictive OEM plastic horn with a much larger 3.3-inch diameter cast aluminum component, allowing your turbocharger to breathe easier and more efficiently.
Proven Performance Gains: This high-flow design is engineered to deliver a measurable power increase, netting you up to 10 RWHP for better acceleration and towing capabili[...]
Unlock your L5P Duramax's full potential with the Fleece FPE-L5P-INTAKEHORN High Flow Intake Horn, the essential bolt-on upgrade for your 2017–2019 6.6L engine. The stock plastic intake runner is a major airflow bottleneck, measuring a restrictive 2.4 inches in diameter. Our innovative, high-performance cast aluminum intake horn directly replaces that limitation with a significantly larger 3.3-inch diameter design. This immediate increase in volume and flow area reduces restriction and provides a smoother path for air to reach the turbocharger, which in turn leads to improved engine performance, torque, and efficiency. You'll feel the difference on the road with an immediate increase of up to 10 additional Rear Wheel Horsepower (RWHP), without requiring any tuning or modifications.
- Significant Airflow Improvement: Directly replaces the small, restrictive OEM plastic horn with a much larger 3.3-inch diameter cast aluminum component, allowing your turbocharger to breathe easier and more efficiently.
- Proven Performance Gains: This high-flow design is engineered to deliver a measurable power increase, netting you up to 10 RWHP for better acceleration and towing capability.
- Advanced Anti-Surge Technology: Features an integrated anti-surge face that engages the turbo compressor cover to optimize airflow and prevent pressure surges, enhancing both performance and turbo longevity.
- Simple, No-Fuss Installation: This is a direct replacement for the stock GM intake horn, requiring no modifications or tuning for a quick, straightforward upgrade.
- Engineered for Durability and Integration: Constructed from durable cast aluminum for superior strength compared to the factory plastic. It also includes a threaded billet aluminum port for the PCV (Positive Crankcase Ventilation) system to maintain emissions compliance.
- Future-Proof Design: Its larger volume and smoother flow make it an ideal complement to stock turbos while also being perfectly compatible with larger, upgraded aftermarket turbochargers.
- Backed by Quality: Covered by a 1-Year Limited Parts Warranty.
By prioritizing optimal airflow, the Fleece High Flow Intake Horn acts as a vital component in maximizing your Duramax's combustion efficiency. The smoother, less-turbulent air delivery to the turbo means the engine works less to produce power, translating directly into increased horsepower and torque alongside potential improvements in fuel economy. This isn't just a basic replacement; it's an expertly engineered component designed to eliminate the most significant flow restriction in your intake system, ensuring that whether you're running a stock setup or planning a full performance build, your engine is always receiving the clean, uninhibited airflow it needs to perform at its peak. Are you ready to unleash the true power and efficiency of your L5P Duramax?