Description
Confirm the selected variation, quantity, package contents, current offer, and store terms before placing an order.
COMPATIBILITY:
GX640 type SD1 GX640 type SD1/A GX640 type SD2 GX640 type SD2/A GX640 type SD3 GX640 type SD4 GX640 type SD4/A H4518H type HSA/A H4518H type HSA/B H4518H type HSA/C H4518H type HSA/D H4518H type HSAC/A H4518H type HSAC/B H5518 type AC2/A H5518 type AC2/B H5518 type AC4/A H5518 type AC4/B H5518 type NAC2/A H5518 type NAC2/B H5518 type NAC4/A H5518 type NAC4/B H5518 type A2
What is CDI?
CDI stands for capacitor discharge ignition (alternatively, “capacitive.”) If you’re new to capacitors, they’re similar to batteries in that they can store energy for later. What sets them apart is their ability to release all that energy near instantaneously, which is ideal for an ignition circuit.
The basic CDI system is a trigger mechanism, coils, and a box, often black, with capacitors and other circuitry inside. The trigger tells the box to fire, the box determines when to fire which coil with the capacitors, and zap goes the spark plug, ad infinitum. In addition to dischargin’ those capacitors, the box may also influence your rev limit, timing advance, and other variables related to spark, but that’s it.
Vehicle information
Available fitment details
Listing compatibility notes
- [Working principle]: The generator coil produces high-voltage electricity, which flows through the electronic igniter, then through the high-voltage package, and ultimately reaches the spark plug to complete the ignition process [Compatible With]: for Honda 4518 & 5518.
Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.
Package contents, delivery, returns, inventory, and buying trust
Buying guidance
Quick decision
Check exactly what this control units listing includes before checkout.
Package contents
- Use the photos and product description to confirm quantity, sides, hardware, and included accessories.
- Review the current shipping and returns pages before ordering.
Before you buy
- Compare the listing title, photos, package contents, and specifications with the part being replaced.
- Confirm vehicle compatibility and installation requirements before ordering.
Delivery and returns
- Use the current cart, checkout, shipping, and returns pages for store-specific terms.
- Keep the selected variation and order details available for support.
Customer feedback
Ratings and written reviews
Reviews below were submitted through this store.
Reviews
There are no reviews yet.