Exterior Components› Body Panels and Components

CDI

TUNE UP KIT INBOARD 8CYL

$76.56

SKU: C03M E66-0012

In Stock
In Stock
Ships by Jun 14
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The CDI E66-0012 Tune Up Kit is designed for use with Mercruiser engines featuring Thunerbolt IV & V HEI Ignition. It replaces part numbers 18-5273, 71780, 805759Q3, and 805759T3.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCDI
Part NumberC03M E66-0012

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy