Yezoauto High-Pressure Fuel Pump, Non-Threaded Outlet — OE Fit for Mercruiser V8/V6

Yezoauto high-pressure fuel pump with a non-threaded outlet delivers reliable pressurized fuel flow for Mercruiser V8 and V6 marine engines that require OE replacement numbers like 18-35433 / 861156A1.

This direct-replacement fuel pump is engineered to match fitment and function for a wide range of Mercury Mercruiser engines (305 5.0L through 502 8.2L) and compatible OE part numbers. Built to restore proper fuel delivery, the assembly includes the pump, seal ring and is 100% tested on the line. Use the step-by-step installation guidance to swap the assembly safely and bring fuel pressure back to specification without modifying the tank or outlet type.

How do I know this pump fits my Mercruiser engine?

Check the engine displacement and the OE interchange numbers against your existing pump. Yezoauto lists compatibility with common Mercruiser engines and provides a set of interchange part numbers to cross-check with your current unit.

• Fits MerCruiser 305 (5.0L), 350 (5.7L), 377 (6.2L), 454 (7.4L), 502 (8.2L) and select 4.3L/6.3L variants.
• Cross-references OE# 807949A1, 849930T1, 861156A02/03/01, 18-35433 and 935433.
• Designed with a non-threaded outlet to match specific tank connections.

What changes when replacing with a non-threaded outlet pump?

A non-threaded outlet aligns with certain factory fuel hoses and tank fittings so you can reconnect hoses without adapters. Ensure the hose diameter and clip type match the new outlet before finalizing the install to prevent leaks or loss of pressure.

• Maintains original hose routing and fuel line clips where applicable.
• Eliminates need for threaded adaptor fittings when tank uses push-on connections.
• Verify hose condition and replace clamps during reassembly for a secure seal.

How straightforward is installation and what tools are required?

Installation follows standard in-tank pump replacement steps and is approachable if you have basic mechanical skills and the right tools. Safety precautions include relieving fuel system pressure and supporting the tank during reconnection.

• Compare old and new assemblies for correct orientation and outlet type.
• Use a transmission jack or similar support to raise the tank slightly during hose and connector reattachment.
• Reinstall the fuel filler neck, tank straps, and torque mounting bolts to factory specifications; reconnect negative battery cable last.

What testing and warranty coverage comes with the pump?

Yezoauto inspects and tests fuel pump assemblies before shipment to reduce early-life failures. The product comes with a one-year manufacturer support policy and customer service response commitment.

• 100% assembly-line testing to verify function before packaging.
• One-year limited manufacturer support for defects and questions.
• Customer service promise: responses within 18 hours for troubleshooting help.

Who is this for: The Yezoauto high pressure fuel pump with non-threaded outlet is intended for boat owners, marine mechanics and restoration projects that require a direct OE-style replacement for select Mercruiser V8 and compatible GM-based engines. Choose this unit if you need a tested, drop-in pump that matches interchange numbers like 18-35433 / 861156A1 and prefer a push-on (non-threaded) outlet for original fuel hose systems. If your engine uses threaded fittings or unusual tank adapters, confirm the outlet style before ordering.