Cobb Subaru Oil Cap – Stealth Black – Subaru Models

Cobb Oil Cap — Stealth Black — Subaru Models

The Cobb Stealth Black Oil Cap is a billet anodized aluminum oil filler cap that replaces the factory plastic cap on Subaru engines. Anodized aluminum construction resists the heat, oil contamination, and UV exposure that degrade factory plastic caps over time. The stealth black finish coordinates with the Cobb engine dress aesthetic and provides a clean, premium appearance at the oil filler location.

DETAILS

• Platform: Subaru WRX, STI, Forester, Outback, Legacy — all models with Subaru oil filler thread pitch
• Material: billet aluminum — anodized stealth black finish
• Replaces factory plastic oil filler cap
• Correct thread pitch for Subaru oil filler neck
• Heat and oil resistant — does not degrade or discolor like factory plastic
• Sealing O-ring maintained — correct diameter for factory filler neck
• Direct replacement — no modification required

Billet Anodized Aluminum vs Factory Plastic: Oil Cap Construction

The factory Subaru oil filler cap is a functional plastic component that becomes discolored, brittle, and difficult to handle over time from sustained heat cycling and oil splash exposure. The Cobb aluminum cap maintains its appearance and sealing function indefinitely — anodized aluminum does not absorb oil, does not discolor from heat, and does not become brittle from UV exposure. The stealth black anodize is consistent with the black-themed Cobb engine bay accessories including the alternator cover, radiator shroud, and AOS on Subaru applications.

Thread Fitment, Sealing, and Stealth Black Engine Bay Finish

The Cobb oil cap threads onto the factory oil filler neck at the correct Subaru thread pitch — no adapter or modification is required. The sealing O-ring is correct specification for the factory filler neck diameter and provides an oil-tight seal at the same torque as the factory cap. Removal and reinstallation require standard hand torque — no tools needed.

What’s in the Box

• Cobb stealth black aluminum oil cap

Why Choose Cobb Tuning

Cobb Tuning has been developing performance software and hardware for turbocharged enthusiast vehicles since 1999. Founded in Austin, Texas, Cobb built its reputation on the Accessport and expanded into a full catalog of hardware engineered to complement it. Every OTS map is developed in-house on real vehicles, and every hardware product is validated as part of a complete system — not sourced and sold in isolation. That integrated approach is why Cobb produces consistent, reliable results across the builds we see every day.

The RallySport Take

The Cobb Stealth Black Oil Cap is the engine bay detail upgrade for Subaru owners who want every visible component in the bay to reflect a consistent quality and aesthetic standard. A small change with a visible result every time the hood is opened — and a genuinely better component than the factory plastic it replaces.

Fitment

Year	Make	Model	Notes
2002-2026	Subaru	WRX / STI / Forester / Outback / Legacy	all models with Subaru oil filler thread pitch