Parts for your 1998 Ford Falcon-Exhaust gasket

1998 Ford Falcon Exhaust Gasket

Based on Ford’s AU Series workshop literature and common repair manuals used in Australia and New Zealand (e.g., Gregory’s/Max Ellery), plus parts catalogues from Ford’s EPC and major gasket makers (Permaseal, ACL, Fel-Pro), the 1998 Ford Falcon (EL late and AU Series I) uses exhaust gaskets. These include a manifold-to-cylinder-head gasket and flange or “donut” gaskets at key pipe joins. So the exhaust gasket is absolutely relevant and fitted on this model.

On a 1998 Ford Falcon, the exhaust gasket’s job is straightforward: keep hot gases sealed as they exit the engine and move through the exhaust. At the manifold-to-head face it prevents leaks that can cause that tell-tale ticking on cold start, fumes under the bonnet, and skewed oxygen sensor readings. Downstream, flange or donut gaskets help keep the system quiet and stop soot streaks, pinging noises, and whiffs of exhaust making their way into the cabin.

As part of regular servicing, it’s smart to give the exhaust a once-over. A technician will look for black soot marks around the manifold and flanges, listen for chuffs or ticks, and check for any loosened fasteners or warped heat shields. If the manifold’s been off before, or if the system has had a hard life towing or doing heaps of hot/cold cycles, the gasket can go brittle or crush down and lose clamping force. Replacement is the fix—these gaskets are not a permanent, lifetime item.

When replacing, the Falcon responds best to proper prep. Surfaces should be clean and flat—no old material left behind—and studs/nuts inspected. Many techs fit new copper-coated or prevailing-torque nuts and use a dab of high-temp anti-seize on the studs. The manifold fasteners should be tightened evenly from the centre out to the workshop manual spec, over-tightening can warp the manifold or crush the gasket unevenly. At the front pipe join, the correct donut or flange gasket should be used—no sealant needed unless a specific joint design calls for it, and never on the manifold-to-head face.

There’s no set time-based interval to swap the gasket, but it’s wise to inspect at each service, especially if there’s a new rattle, ticking, or faint exhaust smell. If the car shows a lean code or noisy cold starts, a quick gasket check can save chasing your tail with sensors and fuel trims. Get it sealed up properly and the Falcon will run quieter, cleaner, and happier.

• Common signs it’s due: ticking on start-up, soot trails at joins, exhaust smell under the bonnet, rough idle, or worse fuel economy.
• Best practice: replace the gasket any time the manifold is removed, and recheck fastener torque after a few heat cycles.

Popular questions about 1998 Ford Falcon exhaust gaskets

Does a 1998 Falcon actually have exhaust gaskets?
Yes. Both the late EL and AU Series I Falcons use a manifold-to-head gasket, and typically a donut or flange gasket at the front pipe/catalyst joins. V8 variants also use gaskets at manifold and flange points, exact styles differ slightly across engines.

What are the symptoms of a blown exhaust gasket on an AU/EL Falcon?
Expect a sharp ticking noise on cold start that softens as it warms, faint exhaust smell near the engine bay, black soot marks around the manifold or flanges, and sometimes a slight drop in torque or odd oxygen-sensor fuel trims.

Should sealant be used with the exhaust gasket?
Generally, no. The manifold-to-head gasket is installed clean and dry to clean, flat faces. Use the correct new gasket and torque to spec. High-temp anti-seize on studs is fine, but avoid goop on the sealing faces unless a specific slip joint downstream calls for a light, approved sealant.