340LPH E85 High Performance Fuel Pump Kit GSS342R
This fuel pump is manufactured to OEM specifications as a direct replacement part. Each unit undergoes quality testing for flow rate, pressure rating, and durability to ensure reliable field performance. Designed for professional mechanics and fleet operators who need parts that fit right the first time.
Vehicle Compatibility
| Application | Details |
|---|---|
| Dodge Vehicle:FWD Models 1984 | 1990 |
| Ford Vehicle:Mustang 1985 | 1997Mustang Cobra 1996–1997Probe GT 1988–1997F-150F-250GM Vehicle:GM Cars & Trucks 1985–1992 |
| Honda Vehicle:Accord 1990 | 1997Civic 1988–1991CRX 1988–1991Civic 1992–2000Prelude 1992–1997Mazda Vehicle:Miata 1994–1997MX-6 1988–1992RX-7 1989–1995 |
| Mitsubishi Vehicle:Eclipse 1990 | 1999Lancer Evolution 8Lancer Evolution 9 |
| Nissan Vehicle:Altima 1993 | 1995200SX 1995–1998200SX SE-R 1995–1998Maxima 1989–1994NX1600 1991–1994NX2000 1991–1994Sentra 1998–1999Subaru Vehicle:WRX (All years, including STI) |
| Toyota Vehicle:Supra Turbo 1984 | 1998AvalonVenzaYaris |
Replaces OEM Part Numbers
GSS342R • 50-1200 • 501200 • 10910-302 • 10910302 • GSS342 • Specification • Liter • 43psi • 13.5VOperational • Pressure • 43-90psi
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
Can I cross-reference GSS342R with 50-1200?
Yes. Both GSS342R and 50-1200 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 (GSS342R, GSS342) 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.
My vehicle is a 1990 model – is it covered?
The compatibility range for this part includes 1990-1993. The 1990 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.
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