MSD Pre-wired Switch

Marsoni

M251S

$39.00

Get it in 3 business days with 1 day shipping. Friday, May 29

MSD Pre-wired SwitchThis prewired switch makes it very convenient to switch back and forth from conventional Kettering to an MSD ignition. It's useful for troubleshooting the MSD unit and it's wiring and for switching it back to Kettering so your ignition scope trace will look 'normal' for the easiest trouble shooting. It's the same four pole double throw switch we've been selling for this use for years. . . only not the delicate job of soldering the wires on the switch

Easy Shipping

Quick Dispatch:

Your MSD Pre-wired Switch orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your MSD Pre-wired Switch ships.

Need Help?
Questions about MSD Pre-wired Switch, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for MSD Pre-wired Switch in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Easy and perfect fit for 2017 and 2018 Honda CRV with 1.5l engines. You need a Phillips screwdriver to remove the 4 screws holding the airbox. After that you just remove the old one and put the new one in the same orientation and put the screws back on. Helps the engine breathe which can result in slightly more power and mpg. I recommend changing every few years.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 8, 2025