PCM 6.0L Starboard Exhaust Manifold - Crusader ChallengerRestore proper exhaust flow and reliable performance with the PCM 6. 0L Starboard Exhaust Manifold for Crusader Challenger Series engines. This OEM style marine exhaust manifold is designed for demanding inboard applications where correct fitment and heat management are critical. Ideal for replacing a corroded, cracked, or leaking manifold to help prevent exhaust leaks, reduce water intrusion risk, and maintain efficient engine operation. Application: