Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines (Replaces 37110-99E02)
This ignition key switch assembly is designed for a wide range of Suzuki outboard engines, including the 2-Stroke DT Series (8–225 HP) from 1983–2003 and the 4-Stroke DF Series (9.9–140 HP) from 1996–2011. It serves as a reliable replacement for multiple original equipment manufacturer (OEM) and aftermarket part numbers.
Engineered for durability and performance in marine environments, this component provides a direct fit into the remote control box, ensuring a straightforward installation. Its sealed, waterproof construction protects internal components from moisture and corrosion.
- Features a 3-position switch (Off-Run-Start) with Push-to-Choke functionality integrated into the key press.
- Constructed from high-strength plastic and metal to withstand harsh marine conditions.
- Package includes one ignition switch assembly and two keys for immediate installation.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| Suzuki |
37110-99E02 |
| Suzuki |
37110-99E01 |
| Suzuki |
37110-99E00 |
| Suzuki |
37110-92E02 |
| Suzuki |
37110-92E01 |
| Suzuki |
37110-92E00 |
| Sierra |
MP51010 |
| Sierra |
MP51012 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Suzuki owners, You can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.
Suzuki 2-Stroke Outboard Engines
| Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
| DT8 |
8 |
2-Stroke |
1988-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT9.9 |
9.9 |
2-Stroke |
1988-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT15 |
15 |
2-Stroke |
1989-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT20 |
20 |
2-Stroke |
1986-1988 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT25 |
25 |
2-Stroke |
1983-1988 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT25C |
25 |
2-Stroke |
1989-2000 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT30 |
30 |
2-Stroke |
1983-1987 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT30C |
30 |
2-Stroke |
1988-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT35 |
35 |
2-Stroke |
1987-1989 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT40 |
40 |
2-Stroke |
1984-1985 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT40C |
40 |
2-Stroke |
1986-1998 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT55 |
55 |
2-Stroke |
1985-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT65 |
65 |
2-Stroke |
1985-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT75 |
75 |
2-Stroke |
1983-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT85 |
85 |
2-Stroke |
1983-2000 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT90 |
90 |
2-Stroke |
1989-1997 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT100 |
100 |
2-Stroke |
1989-2000 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT115 |
115 |
2-Stroke |
1983-2001 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT140 |
140 |
2-Stroke |
1983-2001 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT150 |
150 |
2-Stroke |
1986-2003 |
37110-92E00/92E01/99E00/99E01/99E02 |
Includes variants: DT150S, DT150G, DT150EFI, DT150STC |
| DT175 |
175 |
2-Stroke |
1987-1992 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DT200 |
200 |
2-Stroke |
1986-2000 |
37110-92E00/92E01/99E00/99E01/99E02 |
Includes variants: DT200S, DT200G, DT200EFI |
| DT225 |
225 |
2-Stroke |
1990-2003 |
37110-92E00/92E01/99E00/99E01/99E02 |
Includes DT225G variant |
Suzuki 4-Stroke Outboard Engines
| Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
| DF9.9 |
9.9 |
4-Stroke |
1996-2011 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF15 |
15 |
4-Stroke |
1996-2011 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF25 |
25 |
4-Stroke |
2000-2007 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF30 |
30 |
4-Stroke |
2000-2007 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF40 |
40 |
4-Stroke |
1999-2010 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF50 |
50 |
4-Stroke |
1999-2010 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF60 |
60 |
4-Stroke |
1998-2009 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF70 |
70 |
4-Stroke |
1998-2009 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF90 |
90 |
4-Stroke |
2001-2004 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF115 |
115 |
4-Stroke |
2001-2004 |
37110-92E00/92E01/99E00/99E01/99E02 |
|
| DF140 |
140 |
4-Stroke |
2002-2011 |
37110-92E00/92E01/99E00/99E01/99E02 |
Includes DF140Z and DF140T variants |
Technical Specifications
| Specification |
Value |
| Product Type |
Ignition Key Switch Assembly |
| Installation |
Remote Control Box |
| Fuel Type |
Gasoline |
| Connection |
Push-in terminal connection |
| Housing Material |
High-strength plastic and metal |
| Operating Positions |
3-position: Off-Run-Start |
| Features |
Push-to-choke functionality, Sealed waterproof construction |
| Warranty |
1 year (manufacturer dependent) |
Package Contents
- 1 x Ignition Key Switch Assembly (replaces 37110-99E02)
- 2 x Keys
Installation Guide
-
Safety First: Disconnect the boat's battery to prevent electrical shorts.
-
Access the Switch: Open the remote control box housing where the ignition switch is located.
-
Document Wiring: Take a clear photo of the wire connections on the back of the old switch before disconnecting anything.
-
Disconnect Old Switch: Carefully unplug the push-in terminal connector from the existing switch.
-
Remove Old Switch: Unscrew the retaining nut on the exterior of the switch and remove it from the control box.
-
Install New Switch: Insert the new ignition switch into the mounting hole and secure it with its retaining nut.
-
Reconnect Wiring: Plug the terminal connector firmly onto the back of the new switch, referencing the photo from earlier.
-
Test Functionality: Reconnect the battery and test all key positions (Off, Run, Start) and the push-to-choke function to ensure proper operation.
-
Reassemble: Close and secure the remote control box housing.
Troubleshooting & FAQ
How do I confirm this fits my engine?
The best method is to compare your original part number to the ones listed in our "Part Number Cross-Reference" table. Additionally, check the "Compatible Engine Models" tables to ensure your specific Suzuki model and year range are included.
Where is this ignition switch installed?
This switch is designed for installation in the boat's remote control box, not directly on the engine.
What are common signs of a failing ignition switch?
Symptoms include the engine failing to crank or start, the key feeling loose or difficult to turn, intermittent power loss to accessories, or the engine not shutting off when the key is turned to the "Off" position.
What does the "Push-to-Choke" feature do?
When the key is in the "Run" position, pushing the key inwards activates the engine's choke or enrichment circuit. This is typically used to aid in starting a cold carbureted engine.
OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
-
Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
-
Fast Global Shipping: Free delivery worldwide in 5–15 days.
-
Direct from Manufacturer: Competitive pricing without compromising quality.