Mechanical Fuel Pump M4704 for Chevrolet B60 P60 C50 C60 C70 GMC C7000 B6000 Brigadier C5000 C6000 1967-1985
This fuel pump is engineered as a direct replacement for the Chevrolet B60 P60 C50 C60 C70 GMC C7000 B6000 Brigadier C5000 C6000 1967-1985. 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 |
|---|---|
| Chevrolet B60 P60 C50 C60 C70 | See product specifications |
| GMC C7000 B6000 Brigadier C5000 C6000 1967 | 1985 Replacement Part Number: M4704 Application: Fit for following models |
| Chevrolet B60 B6P042 1980 | 1985 |
| Chevrolet P60 1983 | 1985 |
| Chevrolet C50 1967 | 1979 |
| Chevrolet C60 1967 | 1979 |
| Chevrolet C70 1980 | 1984 |
| GMC C7000 1979 | 1984 |
| GMC B6000 B6P042 1980 | 1985 |
| GMC Brigadier 1981 | See product specifications |
| GMC C5000 1979 | See product specifications |
| GMC C6000 1980 | 1983 |
Replaces OEM Part Numbers
M4704 • Application • following • models • Chevrolet • B6P042 • 1980-1985Chevrolet • 1983-1985Chevrolet • 1967-1979Chevrolet • 1980-1984GMC • C7000 • 1979-1984GMC
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 Chevrolet 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 Chevrolet 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 Chevrolet B60?
Yes. This part is designed to fit the Chevrolet B60, P60, C50, C60 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 M4704 with Application?
Yes. Both M4704 and Application 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 1967 model – is it covered?
The compatibility range for this part includes 1967-1985. The 1967 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 Chevrolet fuel pump typically last?
Fuel pump life varies by application, but on Chevrolet 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.
Reviews
There are no reviews yet.