32900-94470 / 32900-92L20

Suzuki DT40 40HP Outboard CDI Ignition Unit

Reliable Electronic Ignition for Suzuki DT40 Outboard Engines

The 32900-94470 / 32900-92L20 CDI Ignition Unit is designed for the electronic ignition system of Suzuki DT40 series 40HP two-stroke outboard engines.

The original Suzuki part number 32900-94470 is identified as a CDI UNIT, with 32900-92L20 used as the subsequent/replacement CDI part number in Suzuki parts documentation.

Designed for replacement, repair and aftermarket applications, the CDI unit provides reliable electronic ignition control when used with the corresponding ignition coil, trigger system and spark plugs.

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1. Product Specifications

Item	Specification
Product Name	Outboard CDI Ignition Unit
Product Type	Capacitor Discharge Ignition (CDI)
OEM Reference No.	32900-94470
Replacement / Superseding No.	32900-92L20
THH Model	THH-2077
Application	Suzuki DT40 Series
Engine Class	40 HP
Engine Type	2-Stroke
Cylinder Configuration	Twin Cylinder
Ignition System	CDI Electronic Ignition
Application	Marine Outboard Engine
Function	Electronic Ignition Control
Installation	OEM-Style Replacement
Market	Repair / Replacement / Aftermarket

Note: Compatibility should be confirmed according to the engine model, production year, serial number and original CDI part number.

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2. Application

Suzuki DT40 40HP Two-Stroke Outboard Engine

The CDI unit is primarily intended for Suzuki DT40 series two-stroke outboard engines.

Suzuki parts documentation identifies:

32900-94470 → 32900-92L20

as the CDI unit reference for applicable DT40 models.

Suzuki parts catalogues also list 32900-92L20 as the CDI UNIT for DT40W/P40 and related DT40 configurations.

Before installation, always verify the original OEM part number and engine identification.

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3. Key Features

OEM Part Number Compatibility

Designed as a replacement for the original Suzuki CDI reference:

32900-94470

with the corresponding replacement number:

32900-92L20

This makes the unit convenient for maintenance, repair and aftermarket replacement applications.

Twin-Cylinder Two-Stroke Application

Designed for the ignition architecture of Suzuki DT40 40HP twin-cylinder two-stroke outboard engines.

Stable Electronic Ignition Control

The CDI system stores and releases ignition energy electronically and works together with the ignition coil to generate high-voltage ignition for the spark plugs.

Marine Outboard Application

Outboard engines operate under demanding conditions including vibration, temperature variation and moisture.

A reliable ignition control unit is therefore essential for consistent engine starting and operation.

Suitable for Aftermarket Replacement

Recommended applications include:

• Outboard engine CDI replacement
• Ignition system repair
• Engine restoration
• Marine parts aftermarket
• Repair workshops
• Marine parts distributors
• OEM / ODM development

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4. CDI Ignition Operating Principle

The basic ignition sequence is:

Ignition Trigger Signal
↓
CDI Electronic Control
↓
Capacitor Energy Storage / Discharge
↓
Ignition Coil Voltage Transformation
↓
High-Voltage Ignition
↓
Spark Plug Ignition
↓
Engine Combustion

The CDI controls the release of ignition energy according to the engine's ignition triggering system.

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5. Product Positioning

Professional CDI Solution for Suzuki DT40 Outboard Engines

The 32900-94470 / 32900-92L20 CDI Ignition Unit is positioned as a professional replacement solution for Suzuki DT40 40HP two-stroke outboard engines.

It is suitable for marine repair shops, aftermarket distributors, outboard engine service providers and replacement-parts suppliers.

OEM Reference

32900-94470
32900-92L20

THH Product No.

THH-2077

 

 

Contact Us

• Company: Hsin Hua Electric Innovation Co., Ltd.
• Address: No.1, Anxin 2nd Rd, Andong Village, Annan Dist., Tainan City 709007, Taiwan
• Phone: +886-6-2456156
• Website: www.thh-electric.com.tw

 

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 We also offer the following CDI (Capacitor Discharge Ignition) products.

1️⃣ SUZUKI

• 32900-93911 ➝ 9.9 / 15 HP
• 32900-94470 ➝ 40 HP

2️⃣ TOHATSU

• 3G2-06060-2 ➝ 9.9 / 15 / 18 HP

3️⃣ YAMAHA

• 63V-85540-00 / 63V-85540-01 ➝ 9.9 / 15 HP
• 66T-85540-00 / 66T-85540-01 ➝ 40 HP
• 688-85540-00 ➝ 75 HP
• 688-85540-16 ➝ 75 / 90 HP
• 695-85540-10 / 695-85540-12 ➝ 15 / 25 HP
• 6B4-85540-01 / 6B4-85540-02 ➝ 9.9 / 15 HP
• 6E5-85540-00 ➝ 115 HP
• 6E5-85540-12 ➝ 115 / 130 HP
• 6F5-85540-22 ➝ 40 HP
• 6F6-85540-00 / 6F6-85540-01 ➝ 40 HP
• 6G5-85540-12 ➝ 150 / 175 / 200 HP
• 6G6-85540-00 ➝ 200 / 225 HP