Oil Pan Adapter LS7 -12an ORB Ports

The Oil Pan Adapter LS7 -12an ORB Ports by Peterson Fluid is a precision-engineered bypass adapter designed for GM LS-series engine builds, particularly high-performance LS7 applications where modern oil filtration and cooling systems must integrate with factory pan geometry. This bolt-on adapter solves a critical problem faced by engine builders and mechanics: routing remote oil filters or coolers without fabricating custom lines or compromising engine bay layout. Whether you're building a street machine, race car, or classic restoration with LS power, this adapter bridges the gap between traditional LS7 pan ports and contemporary -12 AN plumbing standards.

Constructed from aluminum and finished in black anodize, the Oil Pan Adapter LS7 -12an ORB Ports features dual 12 AN female ORB (O-ring boss) ports that accept standard braided hose fittings or hard-line adapters with repeatable, leak-free connections. The -12 AN designation means each port handles nominal 3/4-inch hose or equivalent hard-line diameter, providing adequate flow for bypass filtration or thermal management without restriction. ORB threading ensures a metal-to-metal seal without relying on PTFE tape, critical for high-pressure applications and vibration-prone engine compartments. The black anodized finish resists corrosion and maintains a clean, OEM-quality appearance, while the compact 3.85 x 1.75 x 5.45-inch footprint allows installation in tight LS engine bays without interference.

This adapter is essential for builders upgrading to aftermarket oil filtration systems, remote-mount coolers, or sandwich-style filter adapters that demand professional hose routing. Installation requires only bolting directly to existing LS7 oil pan ports—no welding, drilling, or pan modification needed. Mechanics and engine builders working on LS swaps into non-GM platforms benefit equally, as the adapter standardizes pan connections and simplifies integration with modern cooling systems. Compatible with all LS-series engines using factory or aftermarket aluminum pans with matching port locations, the Peterson Fluid unit delivers dependable performance in street, strip, and road-race environments where oil pressure stability and thermal control are non-negotiable.