1) Polished Aluminum.

2) 3-Row Lightweight Racing Design.

3) For Automatic/Manual Transmission.

4) Core Size: 18.11" x 20.00" x 1.73"

5) Inlet Diameter: 1.25"

6) Outlet Diameter: 1.50"

7) Applications:

1987-2006 JEEP WRANGLER YJ / TJ 

(Fits Models with L4 / L6 / 2.4L / 2.5L / 4.0L / 4.2L OHV/ DOHC Engines ONLY)

8) Mounting Style: Bolt-On

9) Package Includes: As Shown In Our Pictures.

This Item Doesn't Come With Installation Guides. We Highly Recommend Professional Installation.