Fitment Information

• Jeep Wrangler YJ 2 Door 4.2L 6 Cyl. 4WD (1988, 1989, 1990)
• Jeep Wrangler YJ 2 Door 4.0L 6 Cyl. 4WD (1991, 1992, 1993, 1994, 1995) 
  • Fits Automatic & Manual Transmission
• Select engine size in drop down before ordering

Specs & Features

• Direct Bolt-On — No cutting or modifications required; installs using OE mounting points.
  
• Exhaust Type: Cat-Back System.
  
• Sound Profile: Tuned for each engine — deeper note for 4.2L, sportier tone for 4.0L; both refined to minimize drone.
  
• Pipe Diameter: Mandrel-bent stainless steel tubing.
  
• Tip Size: Polished stainless steel tip.
  
• Exit Style: Factory-style exit.
  
• Material: Premium T-304 stainless steel.
  
• Warranty: Borla Million-Mile Warranty.
  
• Variation:
  
  • BOR14352 — Fits 1988–1990 Jeep Wrangler YJ (4.2L); tuned for deeper tone and improved low-end response.
    
  • BOR14364 — Fits 1991–1995 Jeep Wrangler YJ (4.0L); tuned for sportier growl and enhanced midrange power.
    

Product Description   

Borla’s Cat-Back Exhaust Systems for the Jeep Wrangler YJ are a must-have for enthusiasts who want to unlock both performance and personality from their classic rigs. On the 1988–1990 4.2L models (BOR14352), the exhaust delivers a stronger low-end rumble that brings new life to the older inline-six while maintaining a controlled tone inside the cabin. On the 1991–1995 4.0L models (BOR14364), the system complements the more modern engine with a sharper, sportier growl and improved throttle response, perfect for off-road climbs or highway cruising. Both systems benefit from Borla’s patented straight-through and multi-core technology, which increases exhaust velocity, adds horsepower, and enhances fuel efficiency without introducing drone. Built from premium T-304 stainless steel with ultra-smooth mandrel bends and CNC precision, these systems ensure a perfect fit and long-lasting durability, making them one of the best upgrades you can give your Wrangler YJ.