This STM 4B11 exhaust manifold head flange is machined in-house out of 304 stainless steel and fits Mitsubishi 4B11 Evo X and Ralliart heads. The flange is machined with a smooth transition to go from the square head port to a round 1.5 inch Schedule 10 runner.

Vehicle Fitment:
2008-2015 Evolution X
2008-2015 Lancer Ralliart Turbo

Features:
• 304 Stainless Steel
• Smooth Transition 
• Weighs 2.08 Pounds
• 12mm Thick
• STM Products are made in the USA!
• Lifetime Warranty on STM Parts to the original purchaser against manufacturing defects

Purchase Includes:
(1) Flange