Seal the plenum-to-intake-manifold joint and keep metered air on its intended path with the Standard Ignition Fuel Injection Plenum Gasket PG1. It drops in as a direct-fit replacement across a range of L4-2.3L Ford and Mercury applications — including the 1983-1990 Ford Mustang, 1983-1987 Ford Thunderbird, 1985-1988 Ford Ranger and 1985-1987 Ford Tempo — plus the V6-3.0L 1992-1994 Ford Tempo (full fitment below).
As a plenum gasket it seals the mating surface between the plenum and the intake manifold. A torn or hardened gasket can allow unmetered air into the system, leaning out the air-fuel ratio and causing a rough or unstable idle; if a failed plenum gasket is the cause, this replaces it. It is supplied as the plenum gasket only — no pintle cap, end seals, grommets, throttle body gasket, or upper intake manifold gaskets.
Interchange: 50000A · 2-50000A · 250000A · E3ZZ9H486A · 800-8501 · 8008501 · Manufacturer part number PG1
Fitment: 1983-1990 Ford Mustang [L4-2.3L]; 1983-1987 Ford Thunderbird [L4-2.3L]; 1983-1984 Mercury Capri [L4-2.3L]; 1984-1986 Mercury Cougar [L4-2.3L]; 1985-1988 Ford Ranger [L4-2.3L]; 1985-1987 Ford Tempo [L4-2.3L]; 1985-1987 Merkur XR4Ti [L4-2.3L]; 1986-1987 Ford Aerostar [L4-2.3L]; 1992-1994 Ford Tempo [V6-3.0L]. Each listed application uses quantity 1.
This part cross-references / interchanges with the following part numbers:
What does the PG1 plenum gasket do?
It seals the joint between the plenum and intake manifold on multiport fuel-injected engines, keeping metered air on its intended path. A leak here can lean the air-fuel ratio and cause a rough idle.
Which vehicles does it fit?
It's a direct-fit replacement for L4-2.3L Fords and Mercurys like the 1983-1990 Mustang, 1985-1988 Ranger and 1983-1987 Thunderbird, plus the V6-3.0L 1992-1994 Tempo. See the Buyer's Guide tab for the full list.
What is it made of?
Paper, with 6 bolt holes and 4 ports. It's made in the United States and tested in an ISO 9000-compliant environment.
What are signs the gasket may need replacing?
Signs that may point to a leaking plenum gasket include a rough or unstable idle and a lean air-fuel condition. Diagnose the cause first, since other parts can produce the same symptoms.
What's included?
The plenum gasket only. It does not include a pintle cap, end seals, grommets, a throttle body gasket, or upper intake manifold gaskets.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
