

The ultimate engineered power system: adds TorqueTubes® to Stinger system; removes more factory restrictions for maximum engine efficiency, power and fuel economy
4.0L 6-CYL: 1997-06 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.
Banks Ram-Air® Intake System |
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Monster® Exhaust, 4.0L & 2.5L |
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Monster Muffler
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TorqueTubes® Exhaust Manifold Assy, 4.0L |
| 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 |
“We went to the source of diesel-engine performance, Gale Banks Engineering, and struck gold. Not only did it take one stop to buy and have our parts installed, but the parts worked as advertised and the results were awesome.”
— Off-Road (Mar '04)