10AN Turbo Oil Drain Fitting – Nissan RB20 / RB25 / RB26 / RB30 Block

Upgrade your RB-series turbo setup with this precision-machined 10AN oil drain adapter, designed for direct block installation on Nissan RB20, RB25, RB26, and RB30 engines.

🔧 Key Features

• Premium billet AN fitting with correct ¾″ NPT/BSP thread ⏤ screws seamlessly into the RB block’s oil drain port under the turbo

• 10AN (⁻10 AN/JIC) outlet delivers a robust oil return line compatible with turbo-grade stainless-steel braided hoses 

• Offered in durable anodised finishes, typically black, for corrosion resistance and engine-bay aesthetics .

🚀 Performance Benefits

• Supports high-flow turbo setups—larger drain diameter prevents oil pooling and bearing wear under high RPM and sustained boost.

• Ideal for custom turbo conversions: whether RB26 swaps or single/twin-turbo builds, this adapter ensures a proper oil return path.

• Trusted choice among enthusiasts—fine tuning and retrofit specialists consistently use ¾″ NPT fittings, even where BSP was original 

⚙️ Applications & Compatibility

• Fits Nissan RB20DE/T, RB25DE/T, RB26DETT, and RB30DET blocks.

• Perfect for:

  • Custom single- or twin-turbo RB builds

  • Top-mount and side-mount setups

  • Retrofits on daily-driven JDM or drift builds

• Essential for street, track, drift, or drag RB conversions requiring upgraded oil return plumbing.

🛠️ Installation Tips

1. Screw adapter into the block’s drain port—hand-tight, then wrench to spec (use tape or sealant as required).

2. Attach a 10AN braided return hose—opt for a straight or 45° fitting depending on layout.

3. Route hose with downward slope to sump or catch can to ensure gravity-fed drainage and prevent oil pooling.

📦 What’s In the Box

• 1× 10AN male oil drain adapter (to ¾″ NPT thread)

• Colour Black.

✅ Upgrade Your Turbo Return System

Don’t rely on fragile OEM fitting or barbed adapters. This 10AN billet adapter is a necessary upgrade for any serious RB turbo system—delivering reliable, high-flow oil return suited to high-power street, drift, or race builds.

🛒 Add to cart now for a robust, future-proof oil return solution in your RB turbo build.

Good for any RB powered car, train, boat. Nissan skyline r32 r33 r34 rb20de rb20det rb25de rb25det rb30de rb30det Silvia s13 s14 s15 stagea holden commadore VL, nissan laurel c33 c34 c35 nissan cefiro a31