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Tested PeakRPM Switch CDI Box for Mariner / Mercury Outboard 6 / 8 / 9.9 / 10 / 15 / 18 / 25 HP 1977-1996 | 339-7452A19
Tested PeakRPM Switch CDI Box for Mariner / Mercury Outboard 6 / 8 / 9.9 / 10 / 15 / 18 / 25 HP 1977-1996 | 339-7452A19
We would like to share our 15 years of experience with our clients and help them find the right part for the problem. This product has a low defect rate, but a high return rate from customers: Either clients are buying it to resolve a spark issue that is not caused by the CDI box, or they are buying the wrong part for their make, model and/or year.
Before purchasing, please make sure to follow our advices:
- Always double check our pictures & fitments against the part you physically have on the vehicle (Our pictures are accurate).
- If you are buying this part for spark issues: these vehicles are notorious for stator failure, please make sure you have properly tested the stator before purchasing.

Details
Details
Brand new PeakRPM aftermarket Switch CDI Box
- Our PeakRPM CDI Box provides the optimal output for your ride
- Enjoy fast & easy installation with our plug & play design and included dielectric connector grease
- Tested on vehicle
- OEM-grade electronic components and printed circuit boards for long-term reliability and performance
- 90% of ignition issues are caused by a faulty stator. Fully test ignition components before buying
All item pictures are accurate, if in doubt, do not hesitate and compare our item to your original part.
Specifications
Specifications
Dimensions:
Height: 109 mm
Length: 80 mm
Width: 38 mm
Fixation holes center to center: 99 mm
Wires length: 350 mm
Other specifications:
Number of plugs: 8
Number of pins: 8
Please note that: The only real way to test your CDI box is to swap it out with another known good unit from the same year / make / model. Because of this, we recommend that you rule everything else out before replacing the CDI box.
Interchange Part Nº
Interchange Part Nº
- 339-7452A19
- 339-7452A1
- 339-7452A7
- 339-7452A8
- 339-7452A9
- 339-7452A10
- 339-7452A11
- 339-7452A14
- 339-7452A15
- 339-7452A18
- 339-7452A20
- 339-7452A21
- 18-5777
- 114-7452K1
- 9-25102
Installation
Installation
Please follow the color code when re-installing your original connector.
All the wires are installed in the correct order; please do not change any of the wiring configurations.
Warning:
Risk of electric shock. Disconnect the battery before servicing.
Ensure proper installation by a qualified technician to avoid malfunction.
Vehicle Fitments
Vehicle Fitments
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