Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines (Replaces 37110-99E02, 37110-99E01, 37110-99E00)
Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines (Replaces 37110-99E02, 37110-99E01, 37110-99E00) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines (Replac...
Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines (Replaces 37110-99E02, 37110-99E01, 37110-99E00) is backordered and will ship as soon as it is back in stock.
Product Details
This Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines is a direct-fit replacement for various Suzuki outboard models, including the 2-Stroke DT Series (1983–2003) and 4-Stroke DF Series (1996–2011). It is designed to integrate seamlessly with your engine's remote control box, providing reliable Off-Run-Start operation and push-to-choke functionality.
This assembly serves as an aftermarket equivalent for Suzuki part numbers 37110-99E02, 37110-99E01, 37110-99E00, 37110-92E02, 37110-92E01, 37110-92E00, and Sierra MP51010/MP51012.
- Installs directly into the remote control box.
- Features a sealed, waterproof construction for durability in marine environments.
- Comes complete with two keys for immediate use.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| 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 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part fits the following Suzuki 2-Stroke outboard motors:
| Brand | Model | Rated HP | Stroke | Years | Notes |
|---|---|---|---|---|---|
| Suzuki | DT8 | 8 | 2-Stroke | 1988–1997 | |
| Suzuki | DT9.9 | 9.9 | 2-Stroke | 1988–1997 | |
| Suzuki | DT15 | 15 | 2-Stroke | 1989–1997 | |
| Suzuki | DT20 | 20 | 2-Stroke | 1986–1988 | |
| Suzuki | DT25 | 25 | 2-Stroke | 1983–1988 | |
| Suzuki | DT25C | 25 | 2-Stroke | 1989–2000 | |
| Suzuki | DT30 | 30 | 2-Stroke | 1983–1987 | |
| Suzuki | DT30C | 30 | 2-Stroke | 1988–1997 | |
| Suzuki | DT35 | 35 | 2-Stroke | 1987–1989 | |
| Suzuki | DT40 | 40 | 2-Stroke | 1984–1985 | |
| Suzuki | DT40C | 40 | 2-Stroke | 1986–1998 | |
| Suzuki | DT55 | 55 | 2-Stroke | 1985–1997 | |
| Suzuki | DT65 | 65 | 2-Stroke | 1985–1997 | |
| Suzuki | DT75 | 75 | 2-Stroke | 1983–1997 | |
| Suzuki | DT85 | 85 | 2-Stroke | 1983–2000 | |
| Suzuki | DT90 | 90 | 2-Stroke | 1989–1997 | |
| Suzuki | DT100 | 100 | 2-Stroke | 1989–2000 | |
| Suzuki | DT115 | 115 | 2-Stroke | 1983–2001 | |
| Suzuki | DT140 | 140 | 2-Stroke | 1983–2001 | |
| Suzuki | DT150 | 150 | 2-Stroke | 1986–2003 | Includes variants: DT150S, DT150G, DT150EFI, DT150STC |
| Suzuki | DT175 | 175 | 2-Stroke | 1987–1992 | |
| Suzuki | DT200 | 200 | 2-Stroke | 1986–2000 | Includes variants: DT200S, DT200G, DT200EFI |
| Suzuki | DT225 | 225 | 2-Stroke | 1990–2003 | Includes DT225G variant |
This part fits the following Suzuki 4-Stroke outboard motors:
| Brand | Model | Rated HP | Stroke | Years | Notes |
|---|---|---|---|---|---|
| Suzuki | DF9.9 | 9.9 | 4-Stroke | 1996–2011 | |
| Suzuki | DF15 | 15 | 4-Stroke | 1996–2011 | |
| Suzuki | DF25 | 25 | 4-Stroke | 2000–2007 | |
| Suzuki | DF30 | 30 | 4-Stroke | 2000–2007 | |
| Suzuki | DF40 | 40 | 4-Stroke | 1999–2010 | |
| Suzuki | DF50 | 50 | 4-Stroke | 1999–2010 | |
| Suzuki | DF60 | 60 | 4-Stroke | 1998–2009 | |
| Suzuki | DF70 | 70 | 4-Stroke | 1998–2009 | |
| Suzuki | DF90 | 90 | 4-Stroke | 2001–2004 | |
| Suzuki | DF115 | 115 | 4-Stroke | 2001–2004 | |
| Suzuki | DF140 | 140 | 4-Stroke | 2002–2011 | Includes DF140Z and DF140T variants |
Technical Specs
- 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
- Housing Color
- Black
- Operating Positions
- 3-position: Off-Run-Start
- Features
- Push-to-choke functionality, Sealed waterproof construction
- Warranty
- 1 year (manufacturer dependent)
What’s in the Box
- 1 x Ignition Key Switch Assembly
- 2 x Keys
Installation Notes
- Disconnect Power: Turn off the battery master switch or disconnect the negative battery terminal to prevent electrical shorts.
- Access the Switch: Open the remote control box housing to access the back of the existing ignition switch.
- Document Wiring: Take a clear photo or label each wire connected to the old switch terminals before disconnecting them.
- Remove Old Switch: Unscrew the retaining nut on the outside of the control box and remove the old switch.
- Install New Switch: Position the new ignition switch, secure it with its retaining nut, and reconnect the wires according to your photo, ensuring each is attached to the correct terminal.
- Test Operation: Reconnect the battery, then test all switch positions (Off, Run, Start) and the push-to-choke function to ensure proper operation before closing the control box.
Troubleshooting & FAQ
Does this switch fit all Suzuki models?
No. It is designed specifically for the Suzuki DT (2-Stroke) and DF (4-Stroke) models listed in the compatibility tables. Always verify your engine's model and year range before ordering.
What does "push-to-choke" mean?
Push-to-choke is a feature that enriches the fuel-air mixture to aid in starting a cold engine. Pushing the key inwards while in the "Run" or "Start" position activates the engine's choke or primer system.
What are the signs of a failing ignition switch?
Common symptoms include intermittent power loss to gauges, the engine stalling unexpectedly, difficulty turning the key, or the starter not engaging when the key is turned to the "Start" position.
Is this ignition switch waterproof?
Yes, it features a sealed, waterproof construction designed to withstand exposure to moisture and spray typical in a marine environment, protecting the internal electrical components.
My old key doesn't fit. Is this normal?
Yes, that is normal. For security and proper function, this replacement ignition switch comes with a new set of two unique keys. Your original keys will not work with this new switch.
Can I install this part myself?
While installation is straightforward for those with basic mechanical and electrical skills, professional installation is recommended to ensure safety and correct wiring. Incorrect installation can lead to electrical system damage or engine failure.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
