Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement
Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement

Nissan RB30 Cylinder Head Oil Drain Kit – Billet Rear Cam Plug Replacement

$165.00
/
Tax included.

🔩 Solve Your RB Oil Drain Issues — Finally

The first real solution for rear oil drainage on the RB series head — made by engine builders, for engine builders.

After years of building high-horsepower RB30 engines, we’ve always searched for better ways to manage oil flow. One key issue? Getting oil back to the sump from the cylinder head — especially under boost or sustained RPM. Until now, there’s never been a proper rear head drain for the RB. This billet breather suppression block solves it.

Designed and manufactured in-house by Milton Engine Developments, this T6 billet aluminium fitting replaces the factory rear cam plug to dramatically improve oil return and stop oil from blowing out of breathers.

💡 Why Install a Rear Head Drain & Breather Suppression Block?

  • Prevents crankcase oil from pushing through breathers
  • Improves oil return to sump from the rear of the RB head
  • Essential for high-horsepower and boosted RB30 engines
  • Solves a long-standing oil management flaw in RB platforms

✅ Key Features:

  • Billet T6 aluminium construction, CNC-machined in South Australia
  • Replaces the factory rear cam plug – no modifications required
  • Improves oil drain-back and suppresses crankcase oil spray
  • Includes all fittings and installation instructions
  • Developed through real-world testing on high-output RB30 builds

📦 Fitment:

Designed to suit Nissan RB30-series engines, where rear cam plug is present. 
Check clearance and cam plug fitment before ordering.

🔧 Installation Notes:

  • Remove the rear cam plug before installation
  • Bolts directly into the OEM location — no head machining required
  • Ideal for engines with sealed catch can systems or increased crankcase pressure

🇦🇺 Australian Made by Milton Engine Developments

All components are engineered and CNC-machined in-house in South Australia by Milton Engine Developments, trusted by performance workshops and racers nationwide.

📦 Stock & Support:

In stock and shipping from Adelaide.
Have questions about fitment or installation? Contact us — we're here to help.

Fast, Reliable Shipping

Choose from Standard or Express delivery at checkout — all orders are securely packed to protect your parts in transit.

Worldwide Service

Based outside Australia? Contact us before ordering and we’ll provide a tailored freight quote with the fastest, most cost-effective shipping options for your location.

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