Cobb 04-16 Subaru STi / WRX 06-17 -6 AN Adapter Fittings Black - Set of 2-COBB-COBB312630
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Cobb 04-16 Subaru STi / WRX 06-17 -6 AN Adapter Fittings Black - Set of 2

COBB
COBB312630
700424675340
Fuel Lines
12 Units In Stock - Ships Next Business Day
$ 50.00
$ 50.00

SKU: B312630   |   UPC: 700424675340

COBB -6 AN Turbo Oil Feed Adapter Fittings (Black) – 2004-2021 Subaru STI & 2006-2014 WRX

The COBB 312630 is the #1 selling -6 AN turbo oil feed solution for every EJ20/EJ25-equipped Subaru. This pair of black anodized aluminum adapters replaces the factory banjo bolts on the AVCS and non-AVCS cylinder heads, providing clean, leak-free -6 AN connections for braided stainless or PTFE oil feed lines. Essential for upgraded turbos, remote oil filter setups, or any custom oiling system.

Key Features

  • Direct -6 AN Male Flare: Replaces banjo bolts and crush washers for reliable, leak-free oil feed connections to braided lines
  • CNC 6061 Aluminum + Black Anodized: Lightweight construction resists corrosion for long-term durability in harsh engine environments
  • Built-in 1 mm Restrictor: Delivers precise oil volume tailored for ball-bearing turbos to prevent over-oiling
  • Viton O-Rings Included: Provides factory-style seal directly on cylinder head for immediate leak-proof installation
  • Made in the USA: Ensures lifetime quality backed by COBB engineering standards

Product Notes

  • Fits all 2004–2021 STI (EJ257), 2006–2014 WRX (EJ255), 2004–2013 Forester XT, 2005–2009 Legacy GT/Outback XT
  • Works on both AVCS and non-AVCS cylinder heads with M12 x 1.25 OEM banjo bolt threads
  • In stock – ships same or next business day via UPS/FedEx Ground

Installation Notes

  • Professional installation recommended.
  • 10-minute install: Remove factory banjo bolts, install adapters with supplied Viton O-rings lubricated with light oil
  • Torque to 18 ft-lb; pair with COBB -6 AN PTFE or stainless braided oil feed line

This Part Fits

Year Make Model Submodel
2004-2021 Subaru Impreza WRX STI
2006-2014 Subaru Impreza WRX
2004-2013 Subaru Forester XT
2005-2009 Subaru Legacy GT
2005-2009 Subaru Outback XT

Why Choose COBB Tuning?

  • #1 name in Subaru performance for over 20 years
  • Engineered and manufactured in the USA
  • Proven on every 1000+ hp EJ build worldwide

Frequently Asked Questions

  • Q: Will these work on my 2018 STI?
    A: Yes – fits every EJ20/EJ25 from 2004–2021 STI.
  • Q: Do they have the restrictor built in?
    A: Yes – 1 mm orifice perfect for ball-bearing turbos.
  • Q: Are stainless versions available?
    A: Yes – natural finish version is 312631.

Shipping & Handling

  • Method: UPS/FedEx Ground 
  • Availability: In stock - ships same or next business day
  • Packaging: Official COBB retail packaging
  • Weight: 0.2 lbs

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