Fuel Pump Assembly 16700-Z0J-003 16700-ZL8-013 16700-Z8A-004 for Honda GX610 GX620 GX670 GXV610 GXV620 GXV670
This fuel pump is engineered as a direct replacement for the Honda GX610 GX620 GX670 GXV610 GXV620 GXV670. Manufactured to meet or exceed OEM specifications, it delivers reliable performance in demanding conditions. Each unit is tested for fuel flow, pressure rating, and durability before leaving the factory to ensure consistent quality across every order.
Vehicle Compatibility
| Application | Details |
|---|---|
| Honda GX610 GX620 GX670 GXV610 GXV620 GXV670 Replace Part Number:16700 | Z0J-003, 16700-ZL8-013, 16700-Z8A-004, 16700Z8A004, 16700Z0J003, 16700ZL8013 Specification:Fits 1/4″ fuel lineVacuum typeNot compatible with greater than 10% ethanol fuelDistance Between Mounting Holes is 7CM Fit for |
| Honda Generator:EB11000 K1 A (EZGT), EB11000 K1 A/A (EZGT), EB11000 K1 AN (EZGT), EN2000 A (EZFR), EN2000 AL (EZFR), EN2500 A (EZFS), EN2500 AL (EZFS), EN2500 AN (EZFS) | See product specifications |
| Honda Tiller: FG400 A1 (FZCW), FG500 A1 (FZCY), FG500 A2 (FZCY) Cub Cadet Front | Tine Tiller: FT-24 (21A-395A710), FT-24 (21A-395A756) Lawn-Boy Precision Zero-Turn Mower: 81245 (Z 340 HLX), 81246 (Z 340 HLX), 81250 (Z 350 HLX), 81270 (Z 3400 HLX) |
Replaces OEM Part Numbers
16700-Z0J-003 • 16700-ZL8-013 • 16700-Z8A-004 • 16700Z8A004 • 16700Z0J003 • 16700ZL8013 • Specification • lineVacuum • typeNot • compatible • greater • ethanol
Signs You Need a Replacement
If your equipment is showing any of these symptoms, the fuel pump may be the cause:
- Engine cranks but won’t start — The pump may have lost prime or stopped delivering fuel. Check for fuel at the filter outlet before replacing the pump.
- Stalling under load — A weak pump can’t maintain pressure at high demand. The engine runs fine at idle but dies when you put it to work.
- Fuel pressure warning (if equipped) — Modern equipment monitors fuel rail pressure. A low-pressure warning often means the pump is failing.
- Loud whining from fuel system — A failing pump makes a high-pitched whine that gets louder as it warms up. Normal pump noise is a low hum.
- Air in fuel lines — If you see bubbles in the transparent fuel line or the primer bulb won’t stay firm, the pump may be drawing air through a worn seal.
- Excessive return flow — Too much fuel returning to the tank instead of reaching the injectors indicates internal pump wear.
Before You Replace the Pump
Before replacing the pump, check the fuel filter and fuel lines for restrictions. A blocked filter causes the same symptoms as a failing pump on equipment. When installing the new pump, fill it with clean fuel before connecting the lines — this reduces priming time and prevents dry-run damage. After installation, bleed the system fully and check for leaks at all connection points. Replace the fuel filter at the same time as the pump to protect the new unit from debris.
Frequently Asked Questions
Will this fit my Honda GX610?
Yes. This part is designed to fit the Honda GX610, GX620, GX670, GXV610 among other models listed in the compatibility table above. Verify your specific model and engine code before ordering to ensure the correct fit.
Can I cross-reference 16700-Z0J-003 with 16700-ZL8-013?
Yes. Both 16700-Z0J-003 and 16700-ZL8-013 are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
How do I check if my engine code (GX610, GX620, GX670, GXV610) matches?
The engine code is stamped on a metal tag attached to the engine block, usually near the timing belt cover or on the cylinder head. Compare the code you find with the list above. Engine codes are 3 to 6 characters long.
How long does a Honda fuel pump typically last?
Fuel pump life varies by application, but on Honda equipment you can generally expect 5,000 to 10,000 hours of operation. Running the tank dry, using contaminated fuel, or neglecting the fuel filter are the top causes of premature failure.
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