# 67C-85540-01-00 Yamaha CDI Unit | Genuine Used Part

🔧 Product Description

  

Genuine Yamaha CDI Unit Assembly - Part Number: 67C-85540-01-00

  

A genuine Yamaha CDI unit used on selected F30 and F40 four-stroke outboard ignition systems. This module controls ignition timing and spark triggering for compatible Yamaha 67C electrical systems.

  

⚙️ Key Features

  

• Genuine Yamaha CDI unit assembly

• Correct Yamaha part number 67C-85540-01-00

• Used on selected Yamaha F30 and F40 four-stroke outboards

• Cross-reference family includes 67C855400100 and 878435 / 878430-style references

• Must be matched by exact model code, serial number and connector layout

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 67C-85540-01-00 current / listed CDI unit assembly reference

  

OEM / Related Numbers:

  

• 67C-85540-01-00

• 67C855400100

• 67C-85540-01

• 67C8554001

• 878435

• 878430

• 878435A1

• Related F30 / F40 carburettor wire harness ignition reference

• Related Yamaha 67C electrical-system family reference

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha F30 / F40 four-stroke outboard ignition systems

  

Typically suits:

  

• Engine models:

• Yamaha F30 four-stroke applications using 67C-85540-01-00

• Yamaha F30A applications using 67C CDI unit assembly

• Yamaha F40 four-stroke applications using 67C-85540-01-00

• Yamaha F40A applications using 67C CDI unit assembly

• Yamaha F30 / F40 carburettor ignition-system applications using 67C-85540-01-00

• Yamaha 25HP / 30HP / 40HP four-stroke 67C-family ignition packages where the serial-numbered electrical diagram specifies this CDI

  

• HP Range: commonly 30HP - 40HP, with related 67C-family use in 25HP / 30HP / 40HP systems where specified

• Engine Type: Yamaha three-cylinder four-stroke outboard

• Year Range: Approximately 2001 - 2008 for common F30 / F40 67C CDI applications

• Serial Note: Confirm exact Yamaha model code, serial number, CDI label and connector layout before fitting.

  

🔌 Function

  

The CDI controls spark timing by processing ignition charging and timing signals, then triggering the ignition coil circuit at the correct engine position.

  

Common signs of failure:

  

• No spark

• Intermittent spark when hot

• Hard starting or no-start condition

• Misfire at idle or acceleration

• Weak spark after coil, stator and pulser testing

• Ignition timing fault isolated to CDI output

• Water or corrosion damage at CDI connector

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 150.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Electronic Components | ECU CDI & Electrical Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 150.00 AUD | In stock |

## Images

- 67C-85540-01-00 Yamaha CDI Unit | Genuine Used Part
- 67C-85540-01-00 Yamaha CDI Unit | Genuine Used Part
- 67C-85540-01-00 Yamaha CDI Unit | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/67c-85540-01-00-yamaha-cdi-unit-genuine-used-part)
> Updated: 2026-06-29