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Description
Sierra 18-5139 Mercury Contact Set Replaces 336-4318A2
For 4hp, 4.5hp, 7.5hp, 9.8hp & 20hp motors with conventional ignition systems.
- (2) 18-5139 = (1) 336-4318A2
Interchangeable with:
- Mercury Marine
- 336-4318A2
- 336-3948A3
- 336-4318A3
- 336-4318A4
- 336-3948A2
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
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