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

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

COBB
COBB312630
700424675340
Fuel Lines
13 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

Request For Information

Have questions about Cobb 04-16 Subaru STi / WRX 06-17 -6 AN Adapter Fittings Black - Set of 2? Fill out the form below and we'll get back to you by the next business day.
COBB

COBB

COBB Tuning parts for turbocharged performance platforms are stocked at Black Ops Auto Works. Shop the Accessport ECU programmer, cold air intakes, cat back exhaust systems, and supporting hardware engineered for Subaru WRX and STI, Ford Focus ST and RS, Ford F-150 EcoBoost, Mazdaspeed3 and 6, Nissan GT-R, Porsche, BMW, and Volkswagen platforms. Every product is filterable by year, make, model, and trim so the correct part ships the first time. Black Ops Auto Works carries 372 COBB SKUs across tuning, intake, and exhaust categories. What This Brand Covers COBB Tuning built its reputation on the Accessport, one of the most widely used ECU flash tools in the aftermarket, and has expanded into intakes, exhausts, downpipes, and supporting hardware for a range of turbocharged platforms. The catalog centers on a defined group of import and Euro performance vehicles rather than a single brand family. Brand Focus COBB Tuning parts are engineered primarily for Subaru, Ford, Mazda, Nissan...

View COBB Products
Engine

Engine

Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...

View Engine Products
Fabrication

Fabrication

Shop Fabrication Parts and Materials at Black Ops Auto Works for stainless steel tubing, titanium tubing, aluminum charge piping, mandrel bends, V-band clamps, flanges, merge collectors, AN fittings, PTFE hose kits, braided fuel and oil lines, heat shields, welding supplies, brackets, bungs, and hardware for building custom exhaust systems, turbo plumbing, intercooler piping, and fuel system routing. Start with tubing in stainless, titanium, or aluminum in the right diameter and wall thickness, then add mandrel bends, flanges, V-bands, and clamps to complete the joint work. Black Ops Auto Works carries 5,866 fabrication SKUs from Vibrant Performance, Ticon Industries, Stainless Bros, Radium Engineering, Fragola, DEI, and ATP Turbo. Why Custom Fabrication Custom fabrication solves fitment problems that no universal or pre-bent kit can address. Raw tubing, flanges, and fittings give the fabricator freedom to route exhaust around a turbo, snake charge pipe around accessories, hard-...

View Fabrication Products
Fuel Lines

Fuel Lines

Fuel lines, EFI hose and AN fuel system parts for factory repairs and custom performance builds are stocked at Black Ops Auto Works. Shop fuel injection hose, low pressure feed lines, fuel rail line kits, AN adapters, hard line sections, filler hose, vent kits, hose reels, return line components, fittings and service accessories. Black Ops Auto Works carries 56 fuel line products across EFI hose, custom fuel system routing, Subaru fuel rail kits, Infiniti feed lines, universal repair hose and AN conversion parts. Filter by year, make, model, trim, engine and drivetrain to confirm the correct fit before ordering. What Fuel Lines Do Move fuel safely and consistently Fuel lines connect the tank, pump, filter, rails, regulator and engine. The right hose or hard line supports dependable delivery while resisting fuel exposure, pressure, heat and vibration. EFI Hose and Fuel Pressure Use hose rated for the system Fuel injected vehicles require hose rated for EFI pressure and modern fue...

View Fuel Lines Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×