Key Features
-
CNC billet aluminum construction
-
Black hexagon-style design
-
Universal screw-in fitment
-
Lightweight and heat-resistant
-
Direct replacement for compatible oil filler caps
Translation: small upgrade, clean impact.
Why Upgrade the Oil Cap?
A billet oil cap provides:
-
Better durability than factory plastic
-
Improved engine bay aesthetics
-
Corrosion resistance
-
Easy removal with hex grip design
It won’t add horsepower—but it looks like it could.
- 100% brand new items, never used or installed.
- Replacement aluminum engine oil filler cap.
- Made by OEM approved manufacturers with materials that meets or exceeds strict OEM requirements.
- Manufactured from high quality CNC-machined T-6061 billet aluminum with an anodized finish for superior strength and corrosion protection.
- Direct bolt-on item; no modifications required.
- Features pre-drilled holes to over tighten and loosen with a screwdriver.
- Cap comes with heat resistant rubber to prevent oil spills and protect from high temperatures or brittling.
- Specifications (Estimated):
- Diameter: 2.25″ / 57.15mm
Ideal Applications
-
EVO engine bay refresh
-
DSM show builds
-
Freshly powder-coated valve covers
-
Subtle blacked-out JDM themes
Perfect finishing detail when everything else is sorted.
Installation Notes
-
Verify thread compatibility
-
Ensure O-ring seal is seated properly
-
Hand-tighten only
-
Do not overtighten
Because stripped valve covers ruin vibes.
- No installation guides are included, we highly recommend seeking professional installation.
Compatible/Replacement for:
- Mitsubishi Engines (Twist & Lock Style Oil Caps Only)
Does not work for spring oil fill ports.
Final Verdict
The AJP Distributors Black Hexagon Billet Oil Filler Cap is a clean, understated engine bay upgrade for Mitsubishi 4G63-powered platforms. Durable, functional, and properly JDM.
Because plastic oil caps don’t belong on turbo builds.


There are no reviews yet.