Heurofosh Engine-End Fuel Connector 13563Q3 — Clip-On Direct-Fit for Mercury/Mariner 4–150 HP

The Heurofosh 13563Q3 is a metal-and-ABS engine-end fuel connector built to replace original clip-on fuel fittings on many Mercury, Mariner, Force and compatible outboard motors from 4 to 150 HP.

If you need a direct-fit replacement for a worn or damaged engine-side fuel quick-disconnect, this Heurofosh connector is designed to match common Mercury-style clip-on terminals. It offers a straightforward swap for a range of legacy part numbers and cross-references, and is intended for use on small two-stroke engines up through larger EFI and multi-cylinder outboards where the engine uses the clip-on disconnect system.

What engines will this fuel connector fit?

This connector is compatible with a broad spectrum of Mercury, Mariner and Force outboards, including small two-stroke models and larger EFI engines that use the clip-style disconnect at the engine end. It replaces several OEM and aftermarket part numbers used across different years and HP ranges.

• Generally fits 2-stroke 4hp, 5hp models and 3-cylinder EFI 25–30hp units.
• Cross-references include 22-13563Q3, 13563Q3, 22-13563A3 and similar legacy numbers.
• Reported compatible HP range: 4hp through 150hp on select Mercury/Mariner/Force engines.

How is the connector constructed and will it resist marine conditions?

The connector body combines metal components with ABS plastic to balance strength and corrosion resistance. While not stainless steel throughout, the mixed construction is intended to provide durable service in typical boating environments when installed and maintained properly.

• Durable ABS plastic housing for impact and UV resistance.
• Metal internal fittings for secure fuel flow and connection stability.
• Designed for clip-on quick-disconnect operation at the engine end.

Which OEM or aftermarket parts can this replace?

This Heurofosh connector is produced to match dimensions and function of a number of Mercury/aftermarket fuel fittings, simplifying repairs when original parts are obsolete or costly. Check your engine’s existing connector shape and part number to confirm fit.

• Cross-references include 22-13563A1, 13563A1, 16609M Sierra, 18-8076, Mallory 9-38004 and others.
• Listed replacements: 22-13563B3, 13563B3, 14850 and related numbers.
• Intended as a direct engine-end swap for clip-style disconnects.

How should I verify compatibility before buying?

Confirm compatibility by comparing your existing connector’s shape, clip mechanism and OEM part number with the listing. If your engine manual or the current fuel fitting shows one of the cross-reference numbers, the Heurofosh 13563Q3 is likely to be a correct replacement.

• Inspect the connector at the engine end—look for a clip-on quick-disconnect style.
• Match printed or stamped part numbers to the listed replacements above.
• When in doubt, take a clear photo of the connector and compare it to the product images.

Who is this for: This fuel connector suits boat owners, marine mechanics and DIY enthusiasts who need a cost-effective replacement for a clip-style engine-end fuel fitting on many Mercury, Mariner and Force outboards. It’s aimed at people who already know their engine uses a clip-on quick-disconnect and want a rugged, ready-to-install part that aligns with common OEM cross-reference numbers. Before ordering, confirm your engine’s connector style and part number to ensure proper fit and safe fuel connection.