Electric Fuel Pump 15100-85501-000 for Honda Civic Integra Prelude Hyundai Pony Stellar Mazda 121 Mitsubishi L300 Nissan Suzuki
This fuel pump is engineered as a direct replacement for the Honda Civic Integra Prelude Hyundai Pony Stellar Mazda 121 Mitsubishi L300 Nissan Suzuki. 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 Civic Integra Prelude | See product specifications |
| Hyundai Pony Stellar Mazda 121 | See product specifications |
| Mitsubishi L300 | See product specifications |
| Honda Civic1985 | 1989 |
| Honda Integra1978 | 1987 |
| Honda Prelude1989 | 1995 |
| Hyundai Pony1983 | 1991 |
| Hyundai Stellar1985 | 1995 Innocenti Mini1987-1990 Mazda 1211987-2003 |
| Mitsubishi L3001984 | 1986 |
| Mitsubishi L300 / Delica1986 | 1991 |
| Mitsubishi Space Wagon1986 | 1992 |
| Nissan Micra1986 | 1988 |
Replaces OEM Part Numbers
UC-V6B • 15100-77300 • 18100-79101 • 15270-VD0 • 15100-70DV0 • UCV6B • 1510077300 • 1810079101 • 15270VD0 • 1510070DV0 • ENT100041 • 5-09-999
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 Mitsubishi 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 Mitsubishi 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 Mitsubishi 121?
Yes. This part is designed to fit the Mitsubishi 121, L300 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 UC-V6B with 15100-77300?
Yes. Both UC-V6B and 15100-77300 are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
My vehicle is a 5100 model – is it covered?
The compatibility range for this part includes 5100-8550. The 5100 model year falls within this range, but verify the engine code and body type match. Mid-year production changes sometimes mean two vehicles from the same model year use different parts.
How long does a Mitsubishi fuel pump typically last?
Fuel pump life varies by application, but on Mitsubishi 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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