Marine fuel-line fittings can look similar but connect in different ways. Before replacing a connector, identify the hose inside diameter, hose-side quick connector, tank-side thread and original engine family. This guide compares five Sierra parts carried here, including a specified Johnson/Evinrude mating pair and a separate Suzuki/Tohatsu family.
Three measurements to identify the correct connector
Distinguish 5/16-inch from 3/8-inch fuel hose. The two sizes are not interchangeable just because a quick connector looks alike.
Inspect the latch, coupling and seal arrangement. Sierra names 18-8063 as the mating tank connector for 18-8056.
Match the original fitting and outboard part reference. A 1/4-inch NPT tank connector does not establish the correct hose-side mating part.
Identify fuel-system components with the engine off. Replace damaged fittings and seals and check for leaks according to the engine and tank manufacturer's service instructions.
Sierra fuel connector cross-reference and size chart
| Sierra part | Location | Size or thread | Listed family | Mating check |
|---|---|---|---|---|
| 18-8056 | Hose-side connection | 5/16 in hose | Johnson/Evinrude | Sierra lists 18-8063 as its mating tank connector |
| 18-8063 | Tank-side connection | 1/4 in male thread listed in store | Johnson/Evinrude | Mating connector stated for Sierra 18-8056 |
| 18-8092 | Hose-side connection | 3/8 in hose | Johnson/Evinrude | Check exact mating tank connector against the original system |
| 18-8062 | Fuel-line connection | 3/8 in hose barb | Suzuki and selected Chrysler/Force | Sierra lists 18-8071 as the mating connector |
| 18-8078 | Tank-side connection | 1/4 in male NPT | Suzuki / Nissan-Tohatsu | Sierra lists distinct OE cross-references; confirm the mating fuel-line end |
Size is the indicated hose inside diameter or threaded connection—not an instruction to substitute parts with the same measurement.
Before ordering or installing
- Read the manufacturer's number on the old connector or find its outboard/tank OEM cross-reference.
- Confirm the hose's actual inside diameter and whether it has a quick-connect end or a threaded tank end.
- Identify the mating connector. Sierra explicitly pairs 18-8056 with 18-8063, and 18-8062 with 18-8071.
- Do not combine the Suzuki 18-8078 tank fitting with the 18-8062 line end without verifying an approved mating arrangement.
- Use marine-rated hose and fittings with the correct seals; check the system for leaks and follow fuel safety procedures.
Find the Sierra fittings carried in our marine catalog
Open the matching products below to check current availability and the correct connector before ordering.
Johnson/Evinrude quick-connect and tank fittings
The 5/16-inch 18-8056 and 18-8063 are a manufacturer-listed mating pair. The 3/8-inch 18-8092 is a separate hose-size option; confirm the complete original connection.
Suzuki and Nissan/Tohatsu connection styles
Sierra 18-8062 has a 3/8-inch barb and lists 18-8071 as its mate. Sierra 18-8078 is a 1/4-inch NPT male tank connector with different OE cross-references.
Related fuel-system guide
Need a complete primer-bulb fuel-line assembly? Compare Sierra fuel hoses and engine connections.
NewRVParts supplies new items ordered online from warehouses; in-person inspection or pickup is not available.