Fuel Injector – Fits Suzuki DF40/DF50 40-50HP Outboards (Replaces 15710-87J00)
Fuel Injector – Fits Suzuki DF40/DF50 40-50HP Outboards (Replaces 15710-87J00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Fuel Injector – Fits Suzuki DF40/DF50 40-50HP Outboards (Replaces 1...
Product Details
This is a direct-replacement Fuel Injector – Fits Suzuki DF40/DF50 40-50HP Outboards (Replaces 15710-87J00) for Suzuki DF40 and DF50 series 4-stroke outboard motors manufactured between 1999 and 2010. It is engineered to meet or exceed original equipment specifications for reliable fuel delivery.
This part directly interchanges with Suzuki part numbers 15710-87J00 and 1571087J00, as well as Johnson/Evinrude part number 5031403.
- Engineered for direct OEM-replacement installation.
- Features a 6-port design with a standard 2-hole electrical connector.
- Designed for use with gasoline in marine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Suzuki | 15710-87J00 |
| Suzuki | 1571087J00 |
| Johnson/Evinrude | 5031403 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This fuel injector fits a wide range of Suzuki DF40 and DF50 4-stroke models produced from 1999–2010. Please verify your engine's model and serial number against the list to ensure correct fitment.
For Johnson/Evinrude engines, this part number corresponds to 40-50 HP 4-stroke models from 1999–2010 which were rebranded Suzuki engines. Model-specific verification is recommended.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Suzuki | DF 40QHLK1 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-151001 |
| Suzuki | DF 40QHLK2 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-251001 |
| Suzuki | DF 40QHLX | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-971001 |
| Suzuki | DF 40QHLY | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-030001 |
| Suzuki | DF 40TLK1 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-151001 |
| Suzuki | DF 40TLK2 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-251001 |
| Suzuki | DF 40TLK3 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-371001 |
| Suzuki | DF 40TLK4 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-421001 |
| Suzuki | DF 40TLK5 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-510001 |
| Suzuki | DF 40TLK6 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-680001 |
| Suzuki | DF 40TLK7 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-780001 |
| Suzuki | DF 40TLK8 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-880001 |
| Suzuki | DF 40TLK9 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-980001 |
| Suzuki | DF 40TLK10 | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04002F-010001 |
| Suzuki | DF 40TLX | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-971001 |
| Suzuki | DF 40TLY | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-030001 |
| Suzuki | DF 40TSX | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-971001 |
| Suzuki | DF 40TSY | 40 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 04001F-030001 |
| Suzuki | DF 50QHLK1 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-151001 |
| Suzuki | DF 50QHLK2 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-251001 |
| Suzuki | DF 50QHLX | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-971001 |
| Suzuki | DF 50QHLY | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-030001 |
| Suzuki | DF 50TLK1 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-151001 |
| Suzuki | DF 50TLK2 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-251001 |
| Suzuki | DF 50TLK3 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-371001 |
| Suzuki | DF 50TLK4 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-421001 |
| Suzuki | DF 50TLK5 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-510001 |
| Suzuki | DF 50TLK6 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-680001 |
| Suzuki | DF 50TLK7 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-780001 |
| Suzuki | DF 50TLK8 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-880001 |
| Suzuki | DF 50TLK9 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-980001 |
| Suzuki | DF 50TLK10 | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05002F-010001 |
| Suzuki | DF 50TLX | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-971001 |
| Suzuki | DF 50TLY | 50 | 4-Stroke | 1999–2010 | 15710-87J00 | Beginning VIN# 05001F-030001 |
| Johnson/Evinrude | 40-50 | 4-Stroke | 1999–2010 | 5031403 | Rebranded Suzuki engines |
Technical Specs
- Product Type
- Fuel Injector
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Connection
- 2-hole electrical connector
- Housing Material
- Metal
- Housing Color
- Green
- Dimensions
- 4.3" L x 8.5" W x 2.9" H
- Fitting Type
- FNPT (Female National Pipe Thread)
- Thread Size
- 0.38 inches
- Other Technical Attributes
- 6 ports
What’s in the Box
- 1 x Fuel Injector (replaces 15710-87J00)
Installation Notes
- Disconnect the negative battery terminal.
- Relieve the fuel system pressure by following the manufacturer’s specified procedure.
- Place absorbent shop towels below the fuel rail to catch any residual fuel.
- Disconnect the electrical connector from the fuel injector.
- Carefully disconnect the fuel line from the injector.
- Remove the mounting bolts or clips securing the old injector and gently pull it from the fuel rail.
- Lightly lubricate the new injector's O-rings with clean engine oil before installation.
- Press the new injector firmly into place, ensuring it is properly seated.
- Re-secure the mounting hardware, reconnect the fuel line, and attach the electrical connector.
- Reconnect the battery, turn the key to the 'On' position (without starting) to prime the system, and inspect for any leaks.
Troubleshooting & FAQ
How do I know if my fuel injector is failing?
Common signs include engine misfires, rough idling, poor acceleration, increased fuel consumption, or difficulty starting the engine. A diagnostic scan tool can help identify a cylinder-specific issue.
Is this a direct fit for my Suzuki DF50TLK5?
Yes, this injector is listed as compatible with the Suzuki DF50TLK5 model for years 1999–2010. To be certain, always verify that your original part carries the number 15710-87J00.
Do I need to replace all injectors at once?
While you can replace a single failed injector, it is often recommended to replace them as a set, especially on older engines. This ensures balanced fuel delivery and consistent engine performance across all cylinders.
What maintenance is required for fuel injectors?
Fuel injectors do not have a fixed replacement schedule. Their lifespan can be extended by using high-quality fuel and periodically using a marine-grade fuel system cleaner to prevent deposits from forming.
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
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