CDI 114-5772 Ignition Pack | Mercury Mariner 4-Cyl 30–125HP | Sierra 18-5881-1 | Replaces Mercury 332-5772A

CDI 114-5772 — Ignition Pack | Mercury & Mariner 4-Cylinder Outboards | 30–125HP | Now Sierra 18-5881-1

CDI Electronics 114-5772 is a high-performance replacement ignition pack for Mercury and Mariner 4-cylinder outboard engines from 30HP to 125HP across multiple model years from 1976 to 1997. Now also sold as Sierra 18-5881-1. CDI determines the most common causes of OEM ignition pack failure and engineers their replacements to exceed original specifications. Replaces Mercury OEM part numbers 332-5772A1, 332-5772A2, 332-5772A3, 332-5772A4, and 332-5772A5.

Confirm Fitment Before Ordering

Not sure if this part fits your engine? Give us your Mercury or Mariner engine model, year, HP, and serial number and we’ll confirm it for you before you order — by email, text, or live chat.

Part Specifications

• CDI Part Number: 114-5772
• Sierra Cross-Reference: 18-5881-1
• Type: Outboard ignition pack
• Application: Mercury and Mariner 4-cylinder outboard engines, 30–125HP
• Replaces Mercury OEM: 332-5772A1, 332-5772A2, 332-5772A3, 332-5772A4, 332-5772A5
• Vendor: CDI Electronics (now Sierra 18-5881-1)

Fitment Details — Engine Models and Serial Number Ranges

• Mercury 30HP Jet 4-cyl | 1989–1997 | Serial C159200–0G589999
• Mercury 40HP 4-cyl | 1989–1997 | Serial C159200–0G589999
• Mercury 40HP Jet 4-cyl | 1989–1997 | Serial C159200–0G589999
• Mercury 45HP 4-cyl | 1981–1989 | Serial 5531630–B393190
• Mercury 50HP 4-cyl | 1976–1985 | Serial 4357640–A912477
• Mercury 75HP 4-cyl | 1984–1986 | Serial 6432901–0C221499
• Mercury 80HP 4-cyl | 1978–1983 | Serial 4831999–6432900
• Mercury 80HP Jet 4-cyl | 1994–1996 | Serial 0D283222–0G437999
• Mercury 85HP Model 850 4-cyl | 1976–1977 | Serial 4366802–4831998
• Mercury 100HP 4-cyl | 1988–1996 | Serial 0B209468–0G437999
• Mercury 115HP 4-cyl 16-amp stator | 1989–1997 | Serial 0C100000–0G437999
• Mercury 115HP 4-cyl 9-amp stator | 1989–1993 | Serial 0C100000–0D252460
• Mercury 125HP 4-cyl | 1994–1996 | Serial 0D283222–0G437999

Additional Information

• Vendor: CDI Electronics
• Part Number: 114-5772
• OEM Cross-Reference: Sierra 18-5881-1; Replaces Mercury 332-5772A1, A2, A3, A4, A5
• Application: Mercury / Mariner 4-cylinder outboards, 30–125HP, 1976–1997

Installation Notes

Install following the applicable Mercury or Mariner outboard service manual for your engine model and year. Verify all ignition timing, wiring harness connections, and throttle position before returning the engine to service.

Frequently Asked Questions

Q: How do I confirm CDI 114-5772 fits my outboard?
A: Match your engine’s HP rating and serial number to the fitment table above. If your engine is listed, this is the correct ignition pack. Not sure? Give us your Mercury or Mariner engine model, year, HP, and serial number and we’ll confirm it for you — by email, text, or live chat.

Q: What Mercury OEM part numbers does CDI 114-5772 replace?
A: CDI 114-5772 replaces Mercury OEM part numbers 332-5772A1, 332-5772A2, 332-5772A3, 332-5772A4, and 332-5772A5. It is also sold as Sierra 18-5881-1.

Q: Why choose CDI Electronics over an OEM ignition pack?
A: CDI Electronics engineers their ignition components by identifying the most common failure modes in OEM parts and designing their replacements to exceed original specifications. CDI parts are manufactured in Huntsville, Alabama to ISO 9001 quality standards.

Q: What is the difference between the 16-amp and 9-amp stator versions for the 115HP?
A: The Mercury 115HP 4-cylinder was produced with two different stator output ratings — 16-amp and 9-amp. The 114-5772 fits both variants but covers different serial number ranges for each: 16-amp fits serial 0C100000–0G437999 (1989–1997); 9-amp fits serial 0C100000–0D252460 (1989–1993). Confirm your stator output rating when ordering for a 115HP application.

Q: My engine isn’t listed in the fitment table — will this part work?
A: If your engine model and serial number are not in the fitment table above, do not assume compatibility. Give us your engine details by email, text, or live chat and we’ll identify the correct ignition pack for your application.