

Takes the Banks Stinger system and adds TorqueTubes® exhaust manifolds to remove more factory restrictions, for maximum engine efficiency, power and fuel economy
4.0L 6-CYL: 1998-06 WRANGLER
PowerPack combines all of Banks' 4.0L Jeep airflow upgrades to maximize power no matter what the terrain. It starts with the free-breathing Banks Ram-Air® Intake and high-flow Monster® Exhaust, then adds torque-optimizing TorqueTubes® exhaust manifolds. PowerPack unleashes the power your engine wastes trying to overcome factory intake and exhaust airflow restrictions. By improving engine efficiency, more power gets to the rear wheels, your engine lives longer and fuel economy improves. The exhaust note is rich and authoritative, and includes a polished-stainless tailpipe tip. The included Banks AutoMind programmer comes "ready to run" with pre-loaded power, with towing, sport, or economy settings right out of the box...and right for the job at hand! Its calibrations were developed with power and increased MPG in mind. The AutoMind can also display a host of critical engine functions and provides "service technician" diagnostic capabilities with its ability to scan and clear vehicle trouble codes.

Here's the TEST REPORT
for your vehicle!
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1991-99 Jeep 4.0L PowerPack TEST DATA
Gale Banks talks about the exhaust manifolds for 4.0L Jeeps...
"Banks TorqueTube headers have been the best available power producers for quite a while. About a year ago, I applied my 5 cylinder collector patent to the ‘91-99 Jeep 4.0L 6-cylinder header using a firing center tube & I Kicked My Own Ass! The NEW Revolver header matches the low end of the previous TorqueTube design & adds a ton of top end power.
Have a look at the wheel dyno results. Above 3400 rpm we've added power so your Jeep marches to the shift with no loss in low end torque.
Add a complete Banks PowerPack System & get even more!"
--Gale Banks
Banks Ram-Air® Intake System 4.0L
Cold-air intake with large lifetime filter, enclosed housing and large tubing doubles stock flow, increasing power and fuel economy. |
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Monster® Exhaust, 4.0L & 2.5L
Monster Flow, Performance, Sound & Looks |
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Monster Muffler
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TorqueTubes® Exhaust Manifold 4.0L
4.0L 6-CYL: 2000-06 WRANGLER, 2000-01 CHEROKEE, |
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Revolver™ Exhaust Manifold 4.0L
4.0L 6-CYL: 1991-99 WRANGLER, 1996-98 CHEROKEE, |
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AutoMind® Programmer
Flexible all-in-one programmer & scan tool |
| Application | Year Range | Part # |
|---|---|---|
| PowerPack 4.0L Wrangler | 1997-99 | 51331 |
| PowerPack 4.0L Wrangler | 2000-03 | 51333 |
| PowerPack 4.0L Wrangler | 2004-06 | 51335 |
| PowerPack 4.0L Wrangler Unlimited | 2004-06 | 51337 |
“Hey, what more can you ask of a product? More power, better mileage. It sounds like a good combination to us.”
Sport Truck (Oct '04)