aFe BladeRunner Exhaust Manifold (46-40114) improves throttle response for 2007–2011 Jeep Wrangler JK 3.8L by outflowing stock manifolds by up to 12%. This ported manifold is a direct bolt-on upgrade or replacement for restrictive or cracked factory manifolds. It features precisely machined inlet and outlet ports for a smooth, high-efficiency flow path. Built from heavy-walled ductile iron, this manifold resists warping and cracking under extreme conditions, providing long-lasting durability and reliability well beyond OE or factory replacements.
Key Features :
Increases exhaust flow by up to 12% over factory manifolds
Ported and machined inlet/outlet for smooth flow transitions
Constructed from heavy-walled ductile iron to resist warping and cracking
Improves throttle response and engine efficiency
Direct bolt-on to factory y-pipe for hassle-free installation
Ideal for replacing restrictive or damaged OEM manifolds
Not CARB exempt; not for sale in California
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