Ignition Key Switch – Fits Suzuki 8–225 HP Outboard Engines (Replaces 37110-99E02, 37110-99E01, 37110-99E00)

$25.99

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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.

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You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

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Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

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.

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