The Radium Engineering 20-0813 10AN Male Press-In Valve Cover Fitting is a direct OEM replacement for the crankcase fittings found on the top of Nissan RB25DET valve covers — compatible with both non-VVT-i and VVT-i variants. These low-profile 10AN swivel fittings simply press in with no drilling or welding required, making them the ideal solution for routing crankcase ventilation hoses to an oil catch can or AOS on RB25DET builds.

Important: There is one fitting on the intake valve cover and one on the exhaust valve cover. If replacing both OEM fittings, quantity 2 must be purchased. To replace the PCV valve fitting on the side of the RB25DET intake valve cover, use Radium 20-0808 instead.

Key Features

• Direct OEM replacement — fits intake and exhaust crankcase ports on top of the RB25DET valve covers
• Compatible with all RB25DET valve covers — both non-VVT-i and VVT-i variants
• Simple press-fit installation — no drilling, welding, or permanent modification required
• Low profile 10AN male fitting — ideal for tight engine bay routing
• 360° swivel action — Viton O-rings allow free rotation for easy hose alignment
• Stainless and aluminium construction — corrosion resistant and fuel safe
• Anodised and laser engraved — premium finish with permanent part identification

Fitment Notes

• Fits the crankcase ports on top of the intake and exhaust valve covers
• Compatible with all Nissan RB25DET valve covers — non-VVT-i and VVT-i
• Sold individually — purchase quantity 2 if replacing both intake and exhaust cover fittings
• For the PCV valve fitting on the side of the RB25DET intake valve cover, use Radium 20-0808

Available Part Numbers

• 20-0813 — 10AN Male Press-In Valve Cover Fitting, Nissan RB25DET Crankcase (sold individually)
• 20-0808 — Press-In Fitting for RB25DET intake valve cover PCV side port (sold separately)

Why Radium Engineering?

• ✔ Designed and manufactured in the USA
• ✔ Stainless and anodised aluminium — precision fit, corrosion resistant
• ✔ Viton O-ring swivel — fuel and oil safe, full 360° rotation
• ✔ Trusted by professional motorsport teams and serious enthusiasts worldwide
• ✔ Exclusively distributed in Australia by Coore

Genuine Radium Engineering product. Stocked in Sydney for fast Australian delivery. Sold individually — order quantity 2 for both valve covers. For the PCV side port, use Radium 20-0808.