Sierra CDI 421-4401 Mercury Mariner Adapter Harness

CDI 421-4401 Mercury Mariner Adapter Harness

Adapts older Mercury engines with side cowling connection to new 8 pin plug.

Interchangeable With:

Mercury Marine

84-93669A 2

CDI

421-4401

Frequently Asked Questions

• What is the CDI 421-4401 Mercury Mariner Adapter Harness? The CDI 421-4401 is an adapter harness designed to adapt older Mercury engines with a side cowling connection to a new 8-pin plug. It provides the connection described for compatible Mercury applications.
• What does the CDI 421-4401 adapter harness do? The CDI 421-4401 adapts an older Mercury engine connection at the side cowling to a new 8-pin plug. Verify your engine connection and plug configuration before purchasing to confirm that this adapter harness is appropriate for your application.
• What Mercury part number is interchangeable with the CDI 421-4401 adapter harness? The CDI 421-4401 is interchangeable with Mercury Marine part number 84-93669A 2. Compare the existing part number with the listed interchangeable number to help confirm that the CDI adapter harness is the correct replacement.
• Is the CDI 421-4401 an 8-pin adapter harness? Yes. The CDI 421-4401 is specifically designed to adapt an older Mercury engine with a side cowling connection to a new 8-pin plug. The product description does not provide specific engine models or years, so verify your application before ordering.