AEM Cam Angle Sensor Disk for RB25DET / VG / Some RB26 Engines (50mm OD)

AEM Cam Angle Sensor Disk (50mm OD) | Nissan RB25DET, VG & RB26

Upgrade your Nissan's CAS wheel with the AEM 50mm OD Cam Angle Sensor Disk (Part # 30-8761). Eliminates timing sync issues for RB25DET, VG, and select RB26 engines running aftermarket ECUs.

The AEM Cam Angle Sensor (CAS) Disk (Part # 30-8761) is a precision drop-in replacement designed to resolve timing signal instability common in factory Nissan optical Crank/Cam Angle Sensors. Factory Nissan optical discs feature high-density slot patterns that can lead to timing scatter, misfires, or loss of sync at high RPMs when used with aftermarket standalone engine management systems.

Engineered with a 50mm outer diameter (OD), this 24-tooth trigger disk provides a clean, clear, and highly accurate optical signal to your engine control unit. It installs directly into the stock OEM Nissan CAS housing without requiring custom brackets or modified wiring. This disk is an essential upgrade for tuned Nissan platforms demanding stable timing alignment and precise engine synchronization under high-boost or high-RPM conditions.

Best Uses

1. Standalone ECU Integration: Designed for vehicles running AEM Series 2 / Infinity ECUs or compatible aftermarket programmable engine management systems.
2. High-RPM & High-Boost Builds: Ideal for tuned Nissan engines experiencing timing scatter or sync loss at elevated engine speeds.
3. Engine Compatibility: Fits Nissan RB25DET, Z32 VG30DETT, and select R32/R33 RB26DETT engines using the 50mm OD CAS housing. (Note: Excludes R34 models).

Features

1. Direct Drop-in Replacement: Fits straight into the factory Nissan CAS unit without structural modifications.
2. 24-Tooth Optical Trigger Pattern: Replaces high-slot factory discs to deliver a stable, reliable RPM and position signal.
3. 50mm Outer Diameter (OD): Specifically engineered to match the hub dimensions of targeted Nissan distributor housings.
4. Precision-Cut Construction: Manufactured to tight tolerances to prevent balance or alignment variances during high-RPM rotation.
5. Seamless ECU Compatibility: Engineered to work directly with AEM programmable engine management setups.

Benefits

1. Eliminates Sync Loss: Solves timing jitter and signal breakup commonly encountered with factory optical wheels at high RPM.
2. Improves Engine Tuning Accuracy: Enables standalone ECUs to measure crank/cam position precisely for consistent ignition timing.
3. Plug-and-Play Installation: Saves time during setup by utilizing existing OEM sensor hardware and housings.
4. Prevents Engine Damage: Reduces the risk of engine knock or misfires caused by timing drift under heavy engine load.
5. Cost-Effective Upgrade: Offers a reliable signal solution without the high cost of custom crank trigger wheel kits.