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91-09
Jeep - 4.0L, 3.8L & 2.5L
Monster Flow, Performance, Sound & Looks
Huge 2.5" stainless mandrel-bent tailpipe with a polished tip. Straight-thru Monster muffler flows up to 119% better than stock. Slashes backpressure; rich, authoritative sound
Monster® Exhaust, 3.8L
3.8L V-6: 2007-09 WRANGLER
Constructed entirely of heavy-gauge stainless steel, Banks Monster features a supersized, 2.5-inch tailpipe with a stainless tailpipe tip polished to a mirror finish. Monster Muffler, Banks' straight-through performance muffler, is the industry's least restrictive, more than doubling the stock flow.
Monster virtually eliminates backpressure from the catalytic converter back, for more power and efficiency—and an authoritative, yet civil, exhaust note.
Includes: Stainless Monster muffler; Stainless 2.5" tailpipe; Polished stainless tailpipe tip; Mounting hardware.
| Application | Year Range | Part # |
|---|---|---|
| Monster Exhaust 3.8L Wrangler | 2-door | 2007-08 | 51321 |
| Monster exhaust 3.8L Wrangler | 4-door | 2007-08 | 51322 |
Owners Manual(s)
| Monster Exhaust (Part #96494) 07-09 3.8L Wrangler |
 Download |
3.8L Jeep Exhaust
2009-03-26
We love it...
By the way, we love the Exhaust. Very noticeable increase in power and gas mileage...
We had a Monster Exhaust on our 05 F-150 as well!
-Dave R., Litchfield Park, AZ
exhaust: Jeep 3.8L
Banks Monster exhaust installed on a 2009 Jeep Wrangler 3.8L V-6.
Accolades
“When I was at his [Gale Banks’] shop, I realized that he’s so immersed in diesel technology he could be Dr. Diesel.”
Jay Leno in Popular Mechanics (Sept '05)