The aFe BladeRunner Exhaust Manifold (46-40024) delivers improved exhaust flow and performance for 2001-2016 GM Duramax LLY/LBZ/LMM/LML 6.6L diesel trucks. These ported ductile iron manifolds outflow factory units by 6% while maintaining perfect gasket alignment with precisely machined ports.
Key Features :
Direct replacement for 2001-2016 GM Duramax 6.6L diesel trucks
Machined ports match factory gaskets for maximum flow
6% better flow than stock exhaust manifolds
Includes 1/8" NPT EGT probe ports for gauge installation
Eliminates restrictive pinch in factory driver-side manifold
Durable ductile iron construction
Compatible with stock up-pipes for easy installation
Includes all necessary mounting hardware
Engineered for performance, these manifolds feature three additional cast bosses for alternate testing points while maintaining compatibility with factory up-pipes - allowing installation without turbocharger removal. The precision-machined inlet and outlet ports ensure optimal exhaust flow without compromising gasket sealing performance.
The included 1/8" NPT ports make it easy to install exhaust gas temperature gauges for monitoring engine performance. The durable ductile iron construction provides long-term reliability under extreme diesel operating conditions.
Upgrade your Duramax 6.6L with aFe's BladeRunner manifolds to improve throttle response, reduce exhaust backpressure, and maximize your diesel's performance potential. These manifolds deliver professional-grade improvements while maintaining straightforward installation using factory mounting points.
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