BBB A+ Accredited Business
Description
Sierra 18-28084 Mercury Spark Plug Wire Set
Sierra replacement spark plug wire set for Mercury Marine engines.
Fits: Mercury 30-40 EFI 4-Stroke (3cyl)
- 3 Wires
Interchangeable with:
- CDI
- 934-0002
- Mallory
- 9-28084
- Mercury Marine
- 84-821945T65
- 84-821945T74
- 84-881908T
- Mercury Race Outboard
- 84-821945T65
- 84-821945T74
- 84-881908T
- Mercury Sport Jet
- 84-821945T74
- 84-881908T
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.