RB Billet Rocker Covers – with baffles & splash plates RB25 RB26 Performance

RB Billet Rocker Covers

Upgrade your RB engine with CNC-machined billet rocker covers designed to combine improved oil and crankcase control with a clean, premium engine-bay finish.

These covers feature an integrated baffle system, splash plates and rear PCV outlets, with options available for RB20, RB25, RB26 and compatible RB30 twin-cam applications.

Key Features

• Integrated baffle system to help manage oil vapour inside the rocker covers

• Integrated splash plates for additional oil control under RPM and boost

• O-ring PCV connections for clean, secure plumbing

• Self-draining internal design to help return separated oil back into the cylinder head

• Rear PCV outlets for tidier hose routing

• CNC-machined billet construction

• Uses factory-style rocker cover gaskets

• Accepts the factory oil cap

• Available in multiple anodised colours

• Choice of GT stripe or smooth finish

Fitment

Designed for compatible twin-cam RB applications including:

• RB20

• RB25

• RB26

• Compatible RB30 twin-cam builds

Suitable for a range of Skyline, Stagea, Laurel/Cefiro, Patrol-swap and other RB-powered street, track and performance builds.

Always confirm your cylinder-head and engine configuration before ordering, particularly for RB30 applications.

Integrated Oil-Control Design

The internal baffle and splash-plate system is designed to help:

• Reduce oil mist reaching the breather system

• Reduce excess oil reaching the catch can

• Improve oil management during high-RPM and boosted operation

• Support cleaner crankcase ventilation plumbing

The covers also feature a self-draining internal layout designed to return separated oil back into the cylinder head.

PCV & Breather Configuration

PCV outlets are positioned toward the rear of the rocker covers to allow cleaner hose routing within the engine bay.

O-ring connections provide a neat interface for the breather plumbing while keeping the external design flush and uncluttered.

Long Splash Plate Compatibility

These rocker covers are also compatible with Boost Doc long splash plates where additional oil-control hardware is required.

For available splash-plate options, see the RB Camshaft Oil Splash Plates product.

Design & Finish Options

Choose from multiple anodised colour options with either:

• GT machined stripe

• Smooth finish

This allows the rocker covers to be matched to both performance-focused and show-quality engine builds.

What’s Not Included

• Coil cover

• Front timing cover

Confirm all required supporting components before ordering.

Suitable Applications

These billet rocker covers are suitable for:

• High-boost street builds

• Drift, drag and circuit applications

• High-RPM RB engines

• Dry-sump and modified oil-control setups

• Custom and show-car engine bays

• Builds requiring upgraded crankcase and oil-control components

Machined to Order

These rocker covers are machined to order.

Please allow approximately 6–8 weeks from order to delivery.

Choose your colour and finish to suit your RB build.