Honda H5518 / H4518H / GX640 OEM CDI Unit

Restore reliable ignition performance with this genuine Honda CDI (Capacitor Discharge Ignition) unit. Designed to meet OEM specifications, this module ensures proper spark timing and dependable engine operation across a range of Honda equipment.

This CDI unit carries Honda part number 30580-758-801 and is a direct OEM replacement for select H5518 sub-compact tractors, H4518H lawn tractors, and GX640 engines listed below.

If you are unsure of your exact model or type, please contact us with your complete serial number and we’ll be happy to verify the correct part before you order.

Features:

• Genuine Honda OEM CDI module
• Part number: 30580-758-801
• Direct replacement for listed Honda models and engines
• Ensures proper ignition timing and engine performance
• OEM-quality reliability and fitment

Shipping Note:

• Typically ships within 4 business days

Fitment:

GX640 Engines:

• Types: SD1, SD1/A, SD2, SD2/A, SD3, SD4, SD4/A (all serial numbers)

H4518H Lawn Tractors:

• Types: HSA/A, HSA/B, HSA/C, HSA/D, HSAC/A, HSAC/B (all serial numbers)

H5518 Sub-Compact Tractors:

• Types:
  • AC2/A, AC2/B, AC4/A, AC4/B
  • NAC2/A, NAC2/B, NAC4/A, NAC4/B
  • A2/A, A2/B, A2/C, A2/D
  • A4/A, A4/B, A4/C, A4/D
  • NA2/A, NA2/B, NA2/C, NA2/D
  • NA4/A, NA4/B, NA4/C, NA4/D
    (All serial numbers)