Marine Fuel Line Connector Kit – Fits Yamaha Outboard Engines 6-90 HP
This marine fuel line connector kit is designed for Yamaha 6-90 HP 2-Stroke and 4-Stroke outboard engines that use a 6mm (1/4") fuel line. It provides a reliable, secure connection for your fuel system, ensuring optimal performance and preventing leaks.
This kit serves as a direct replacement for Yamaha part numbers 6Y1-24305-06-00, 6Y1-24305-05-00, 6G1-24304-10-00, and others, along with Sierra equivalents.
-
Complete Kit: Includes two female outboard connectors and one male fuel line connector.
-
Fuel Compatibility: Engineered to work with gasoline and modern ethanol-blended fuels.
-
Simple Installation: Designed for a direct fit with no modification required.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| Yamaha |
6Y1-24305-06-00 |
| Yamaha |
6Y1-24305-05-00 |
| Yamaha |
6Y1-24305-04 |
| Yamaha |
6G1-24304-02-00 |
| Yamaha |
6G1-24304-01 |
| Yamaha |
6G1-24304-10-00 |
| Sierra |
18-80414 |
| Sierra |
18-80413 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.
| Brand |
Model |
Rated HP |
Stroke |
OEM Part No. |
Notes |
| Yamaha |
Outboard |
6 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
8 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
9.9 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
15 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
20 |
4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
25 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
30 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
40 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
50 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
55 |
2-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
60 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
70 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
75 |
2-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
85 |
2-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
| Yamaha |
Outboard |
90 |
2-Stroke & 4-Stroke |
6Y1-24305-06-00, 6G1-24304-10-00 |
Tank side and engine side |
Technical Specifications
| Product Type |
Fuel Line Connector Kit |
| Installation |
Direct fit, no modification needed |
| Fuel Type |
Gasoline, Ethanol-blended fuels |
| Connection |
6mm (1/4") |
| Housing Material |
ABS plastic with metal components |
| Housing Color |
Black |
| Dimensions |
7 cm (2.76") length × 2 cm (0.79") width |
| Weight |
0.09 kg (3.17 oz) |
| Fitting Type |
Quick disconnect |
| Thread Size |
6mm (1/4") |
| Other Technical Attributes |
Superior resistance to UV, ozone, and alcohol-enhanced fuel |
Package Contents
This kit includes the following components:
- 2 x Outboard Female Fuel Line Connectors (6Y1-24305-06-00)
- 1 x Male Fuel Line Connector (6G1-24304-10-00)
Installation Guide
-
Safety First: Ensure the engine is turned off and the area is well-ventilated. Disconnect the battery as a precaution.
-
Locate Connectors: Identify the existing fuel line connectors on both the engine and fuel tank sides.
-
Disconnect Old Fittings: Carefully disconnect the old connectors. Be prepared for minor fuel spillage and have a rag ready.
-
Inspect Fuel Line: Check the fuel line hose for any signs of cracking, brittleness, or damage. Replace the hose if necessary.
-
Attach New Connectors: Securely attach the new male and female quick-disconnect fittings to the fuel line ends, ensuring a tight seal.
-
Connect and Prime: Connect the new fittings to the engine and fuel tank. Squeeze the primer bulb until it is firm to fill the fuel line.
-
Check for Leaks: Once connected, carefully inspect all connection points for any signs of fuel leaks before starting the engine.
Troubleshooting & FAQ
Q: How do I confirm this kit will fit my Yamaha engine?
A: This kit is designed for Yamaha 6-90 HP 2-stroke and 4-stroke outboards with a 6mm (1/4") fuel line connection. The best way to confirm is by checking the part numbers listed in our cross-reference table against your existing part or service manual.
Q: What is the difference between the male and female connectors in this kit?
A: The kit includes two female connectors (replaces 6Y1-24305) which typically attach to the engine and fuel tank ports, and one male connector (replaces 6G1-24304) which attaches to the fuel line hose, allowing it to connect to either female port.
Q: What are common signs that my fuel line connectors need replacement?
A: Common failure signs include visible cracks in the plastic, fuel leaks at the connection point, difficulty connecting or disconnecting the fittings, or an engine that runs rough or stalls, which could indicate an air leak.
Q: OEM vs. Aftermarket?
A: 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.
Q: How fast do you ship and how much does it cost?
A: 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.
Q: What is your warranty and return policy?
A: 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.