Applications include these engines (and the boats that we are aware used these engines... There could be other combinations as well):
• 2GM20F (Capri 26 and Capri 270)
• 3YM20F (Catalina 270's after 10/2005, Catalina 309, Catalina 315)
• 3GM30F (Catalina 320)
• 3YM30 (Catalina 320 Hull 994 & up, Catalina 355)

To operate efficiently a diesel engine must intake a continuous volume of clean air. Hard starting, an erratic idle, and black exhaust smoke are all symptoms of a restricted air intake.

We carry these parts for your convenience though you may find them elsewhere less expensive due to the manufacturer's restricted distribution.