Earl's Performance AT9919AUJERL GM LS Oil Pressure Gauge Adapter Fitting - Black Anodized

The Earl's Performance AT9919AUJERL is a precision-machined adapter fitting designed to simplify the installation of aftermarket oil pressure gauges on GM LS engine swaps. Machined from high-strength 2024-T8 aluminum — a superior alloy compared to standard 6061-T6 — this fitting delivers exceptional durability in demanding performance and racing applications.

Key Features:

• M16 x 1.5mm thread screws directly into the oil pressure passage on the rear of GM LS engine blocks
• Multiple port options available: 1/8" NPT female, -3 AN male, or -4 AN male to accommodate most aftermarket sending units and mechanical gauge hoses
• 2024-T8 aluminum construction — stronger and more durable than standard 6061-T6 aluminum
• Black anodized finish for corrosion resistance and a clean, finished appearance
• Crush washer included — required for proper sealing on the metric adapter fitting
• Versatile design also compatible with other M16 x 1.5mm plumbing applications beyond LS engines
• Made in the USA

Whether you're building a swap vehicle or upgrading an existing LS-powered platform, the Earl's AT9919AUJERL provides a clean, reliable solution for tapping into the factory oil pressure port without fabrication or modification.