Parts for your 2006 Ford Territory-Sump plug washers

2006 Ford Territory sump plug washers — what they do and when to replace

Yes — the 2006 Ford Territory uses a sump plug washer. Ford’s SX/SY Territory workshop manual (Engine 4.0L I6, Section 303) specifies a sealing washer for the engine oil drain plug, and the Ford Australia electronic parts catalogue groups the Territory with BA/BF Falcon for the same M14 sump plug and crush washer. Local parts catalogues for Australia and New Zealand also list 14 mm copper/aluminium washers for this model, confirming it’s a washered plug rather than a taper-seat design.

On the Territory’s Barra 4.0 petrol, the sump plug washer is a little hero that stops weeps and drips where the drain plug meets the alloy steel sump. It’s a crush-style gasket — usually copper or aluminium — that deforms a touch when tightened, filling any tiny imperfections so the oil stays put between services. No drama, no mess on the driveway.

As part of a routine oil change, it’s smart to replace the washer every time the plug comes out. Washers are cheap, and reusing a flattened one is the most common cause of a slow seep that only shows up a few days after the service. For the 2006 Territory, you’re looking for an M14 washer (commonly sold as 14 mm ID). Copper and aluminium both work, copper crushes a tad more predictably, aluminium resists corrosion nicely — either is fine if it matches the spec.

A few quick tips the workshop manual and trade practice agree on:

• Clean the mating face on the sump and the plug head, no old washer stuck on the pan.
• Use one new washer only, don’t stack them.
• Tighten the plug to the published spec in the Ford manual (typically around 25–30 Nm for the 4.0 I6). Over-tightening can strip threads or split the washer.
• If a washer with a bonded rubber ring is fitted (some aftermarket options), treat it as single-use as well.

Signs it’s time? A faint oil halo around the plug, an occasional drip after a run, or evidence of seepage on the undertray. If any of that shows up, swap the washer and re-torque the plug. For peace of mind on long Kiwi or Aussie road trips, keeping a couple of spare 14 mm crush washers in the glovebox is a tidy bit of insurance.

Popular questions about 2006 Ford Territory sump plug washers

What size sump plug washer does a 2006 Ford Territory use?
The Territory’s petrol 4.0 uses an M14 drain plug, so it takes a 14 mm crush washer. Most parts stores in Australia and New Zealand label it as a 14 mm copper or aluminium sump plug washer and often note compatibility with BA/BF Falcon and SX/SY Territory.

How often should the sump plug washer be replaced?
Best practice is every oil change. The washer is designed to deform once to create a proper seal. Reusing an old one invites small leaks later, especially after a hot run followed by a cool-down cycle.

What torque should the sump plug be tightened to on a Territory?
Refer to the Ford SX/SY workshop manual for the exact figure, for the 4.0 I6 it’s typically in the 25–30 Nm range. Use a torque wrench — nipping it “just a bit more” by feel is how threads get damaged and washers split.