The Honda 16700-758-003 Fuel Pump Assembly is a genuine OEM component designed for GX610, GX620, GX630, GX660, and GX690 horizontal shaft engines, as well as H4013, H4514, H4518, and H5518 tractors and HT3810, HT3813, and HT4213 lawn tractors. As a direct Honda OEM replacement, this fuel pump assembly is built to the exact specifications Honda requires for consistent fuel delivery across the full range of compatible machines. Verify your engine or tractor serial number against the fitment table before ordering — Honda supersedes parts at serial breaks, and confirming the match ensures this assembly is correct for your unit.
Key Features
- Genuine Honda OEM Quality — manufactured to Honda's exact fuel-delivery specifications, ensuring consistent flow rate and diaphragm integrity that an aged or failing pump cannot provide
- Direct OEM Replacement — this fuel pump assembly drops in as a like-for-like swap with no reworking of fuel lines or mounting hardware
- Broad Fitment — covers GX610, GX620, GX630, GX660, and GX690 horizontal shaft engines, plus H4013, H4514, H4518, H5518, HT3810, HT3813, and HT4213 tractors; confirm your serial number before ordering
- Restored Fuel Flow — a worn or cracked pump diaphragm starves the carburetor and causes hard starting, surging, or sudden shutdowns; replacing it with this assembly brings fuel delivery back to spec
The fuel pump assembly draws fuel from the tank and delivers it to the carburetor at the pressure and volume the engine needs to run cleanly under load. On Honda's larger horizontal shaft engines and the tractors they power, the pump uses a pulse-operated diaphragm driven by crankcase pressure changes — no external power source is required. When the diaphragm cracks or the internal check valves weaken, fuel delivery becomes erratic, causing the engine to surge, lose power, or stall under load. Replacing this assembly with a genuine Honda part restores proper fuel metering and gets the engine running at full strength again.
Part Details
| Part Number | 16700-758-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Fuel Pump Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX610, GX620, GX630, GX660, GX690 | All |
| Lawn Tractor | H4013, H4514, H4518, HT3810, HT3813, HT4213 | All |
| Multi-Purpose Tractor | H5518 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
