Parts for your 2017 Subaru Exiga-Oil cap

2017 Subaru Exiga oil cap — what it does and how to look after it

Yes, the 2017 Subaru Exiga (including the Crossover 7) uses a conventional engine oil filler cap. Subaru’s 2017 Owner’s Manual and the FB‑series engine service manual both illustrate and reference the oil cap on the rocker cover, confirming it’s a standard, serviceable item. The cap seals the filler neck, lets owners top up oil cleanly, and keeps dust and moisture out. It’s a small part, but it plays a big role in day‑to‑day reliability and in keeping the boxer engine running sweet as. It’s right there under the bonnet, mate.

Beyond simply being a lid, the oil cap helps maintain proper crankcase ventilation and prevents oil mist from weeping out under load. If the cap is loose, perished, or missing, unmetered air can enter, upsetting idle quality and potentially triggering a check‑engine light. You’ll also risk oil splatter under the bonnet and contamination of fresh oil with grit or water. Subaru’s guidance is straightforward: never operate the vehicle without the cap fitted. If the cap’s seal is damaged, replace the seal or the entire cap promptly to protect the FB engine’s longevity and emissions systems. It’s cheap insurance, too, mate.

As part of each service, the workshop should inspect the cap’s O‑ring, threads, and locking tabs, wipe the filler neck, and refit the cap hand‑tight only. Signs it’s time to replace include a hardened or cracked seal, oil mist around the cap, cross‑threading, difficulty clicking the cap home, or a fuel‑oil smell after driving. Many owners choose to renew the seal or cap every 5–7 years, or sooner if there’s visible wear. A genuine Subaru cap or quality equivalent is recommended for correct fit, heat resistance, and durability in service.

DIY is simple: with the engine cool, twist anti‑clockwise to remove, wipe the area, inspect the O‑ring, then reseat squarely and tighten clockwise until snug—no tools, no gorilla grip. If the cap feels dry, a light smear of clean engine oil on the seal helps it seat. If it’s stuck, don’t use pliers, instead warm the engine briefly, then try by hand. Lost the cap? Don’t drive far—replace it immediately.

Where is the oil cap on a 2017 Subaru Exiga?

It sits on top of the engine, on one of the rocker (cam) covers. Open the bonnet and look for a clearly marked cap (often yellow and labelled “OIL”). It’s designed for quick access so top‑ups are easy without tools.

How tight should the oil cap be—do you need a torque spec?

No torque wrench needed. Fit the cap squarely and turn by hand until the O‑ring seats and it feels snug. Don’t over‑tighten. Some caps have a positive stop or “click” when fully seated. After the next drive, check there’s no oil mist around the cap.

What should be replaced—the whole cap or just the seal?

If the cap body is fine, replacing the O‑ring/seal is often enough. If the cap is cracked, warped, or the tabs are worn, replace the entire unit. A genuine Subaru part (matched by VIN) or a quality equivalent will ensure proper fit and heat resistance.