Banks Power Torque Tube Exhaust Manifold for 1999-2006 Jeep Wrangler, Cherokee & Grand Cherokee (4.0L) 51306

Fits select 1999-2006 Jeep Wrangler, Cherokee, and Grand Cherokee (4.0L).

The Banks Power Torque Tube System (MPN: 51306) is a heavy-duty exhaust manifold engineered to replace the crack-prone factory unit on the Jeep 4.0L inline-six. Built from mandrel-bent 409 stainless steel tubing, this system optimizes exhaust gas velocity and slashes backpressure for improved torque and throttle response. Unlike thin-flanged stock manifolds that warp under heat, the Torque Tube features a 1/2-inch thick flange that is double-welded on both sides and machined dead flat for a leak-free seal.

Designed for the rigors of off-road use, the system includes a seamless high-velocity collector to maximize exhaust extraction. This direct bolt-on upgrade installs to factory mounting points and provides a permanent solution to the common manifold failure points found in 1999-2006 Jeep engines.

• Constructed from durable mandrel-formed 409 stainless steel
• Thick 1/2-inch CNC-machined flanges resist warping and heat-stress cracking
• Double-welded flanges (internal and external) milled flat for a precise fit
• Seamless high-velocity collector improves scavenging and torque
• Direct-fit, bolt-on installation replaces OEM manifold
• Engineered specifically for the Jeep 4.0L engine