Radium 20-0813 10AN Press-In Valve Cover Fitting Nissan RB25DET RB20DET Intake

Vehicle Fitment

• Nissan Skyline (RB25DET, 2.5L Turbo I6, RWD/AWD - all years, NEO and non-NEO)
• Nissan Skyline (RB25DET NEO, 2.5L Turbo I6, RWD/AWD - all years)
• Nissan Skyline (RB20DET, 2.0L Turbo I6, RWD/AWD - all years)
• Nissan Laurel (RB20DE / RB25DE / RB25DET - all years)
• Nissan Stagea (RB25DET NEO / RB25DE NEO - all years)

Fitment Notes

• Fits the crankcase vent fittings located on top of the RB20DET and RB25DET (NEO and non-NEO) valve covers, towards the front of the engine - not the intake side PCV valve port on the side of the RB25DET valve cover
• To replace the PCV valve on the side of the RB25DET intake valve cover, use Radium 20-0808 instead
• Both the intake and exhaust side top crankcase vent fittings use this same fitting - purchase quantity 2 to replace both
• For the RB26DETT valve cover fittings, use Radium 20-0809 (12AN) or Radium 20-0739 (16mm SAE)
• When installed in place of a breather valve, a PCV valve must be installed inline or on the catch can as needed

Features

• Direct press-fit banjo replacement for the crankcase vent fittings on top of Nissan RB20DET and RB25DET valve covers
• Converts the factory crankcase vent press-in port to a 10AN male swivel connection for catch can breather lines
• Low-profile design minimizes installed height for clean RB engine bay fitment
• 360° swivel action with FKM O-rings for flexible hose routing after installation
• No drilling or welding required - direct press-fit installation
• Stainless steel and anodized aluminum construction with laser-engraved Radium branding

Specifications

• AN Size: 10AN Male
• Fitting Style: Banjo, low-profile swivel, press-in
• Installed Height: 1.144"
• Press-in Diameter: 0.631"
• Press-in Depth: 0.400"
• O-Ring Material: FKM (Viton)
• Construction: Stainless steel and anodized aluminum
• Position: Top crankcase vent fittings (intake and/or exhaust side) on valve covers
• Engine: Nissan RB20DET / RB25DET / RB25DET NEO

Included Components

• 1x 10AN male banjo press-in swivel fitting (20-0813)

Product Description

The Radium Engineering 20-0813 is a 10AN banjo press-in swivel fitting designed as a direct replacement for the crankcase vent fittings located on top of the Nissan RB20DET and all RB25DET (NEO and non-NEO) valve covers, towards the front of the engine. It converts the factory press-in crankcase vent ports to a 10AN male swivel connection for large-diameter breather lines used in catch can and air/oil separator setups. No drilling or permanent modification required - it simply presses into the existing valve cover port.

Both the intake and exhaust side top vent ports on the RB25DET use this same fitting, so quantity 2 is needed to replace both. The 360° swivel allows the hose outlet to be oriented in any direction after installation for clean, routed catch can plumbing. Builders should note this fitting is for the top crankcase vent ports only - the separate intake side PCV valve port on the side of the RB25DET valve cover requires Radium 20-0808.