*Note* These headers are available for various engine configurations as shown in the graph below. Please specify your required part number during Paypal checkout.
TorqueTubes® Manifold Assembly
One look at Banks TorqueTubes tells you how radically different they are from the stock exhaust manifolds. Constructed of heavy-wall, 400-series stainless steel, TorqueTubes have 5/8-inch-thick (0.625") flanges that are welded on both sides and then machined perfectly flat (no gaskets needed). They never crack, leak or fail.
TorqueTubes® tuned-length tubes produce a huge reserve of low-end torque that proves its worth on every steep grade and short onramp. Now your Workhorse climbs faster and stronger, without the transmission struggling between gears. The muscle to stay in higher gears longer not only stops annoying "shift happy" performance, it lessens the load on your engine and transmission. Here's power to reach freeway speed sooner for safe merging and passing.
W-series chassis | Allison 5-speed trans | EGR-equipped
W-series chassis | Allison 5-speed trans | No EGR
W-24 chassis | Allison push-button trans | No EGR