WIKIBB Power Steering Adapter M16-1.5 to 5/8-18 — Carbon Steel Kit with Viton O-Rings

WIKIBB's Power Steering Adapter Fitting converts M16-1.5 pressure ports to 5/8-18 flare lines, letting newer GM o-ring pumps link to older 3/8" flared steering lines.

When swapping an LS engine or upgrading a steering system, plumbing differences between modern o-ring-style pumps and legacy flared lines are a common snag. This adapter set addresses that mismatch by threading into the pump pressure tube and accepting factory flared lines, supplied with durable Viton O-rings for a reliable seal. Crafted from robust carbon steel and offered in two sizes per kit, it’s designed to endure under steering-system pressures while simplifying installation on classic and modern GM chassis.

How does this adapter make an LS swap steering hookup easier?

The fitting replaces hard-to-find OEM transition parts and eliminates the need to modify existing flared lines or buy entirely new hoses. It screws into the pump pressure tube and provides a secure mating surface for the factory flared line, preserving original hose routing and fittings.

• Threads into the pressure outlet at the rear of the steering booster pump
• Accepts factory flared lines without cutting or re-flaring
• Includes Viton O-rings for a durable, chemical-resistant seal
• Two sizes in the kit to fit common pump configurations

Will this work with my classic GM steering gearbox or modern LS pump?

The WIKIBB adapter is built for compatibility across many GM setups—especially 1980 and newer 605-style gearboxes and GM engines from the mid-1950s through modern LS variants. It’s intended to adapt newer o-ring pumps to older 3/8" flare steering lines without replacing the gearbox or hose assemblies.

• Fits 605 power steering gearbox designs and many GM models
• Commonly used with Camaro, Corvette, GTO, and various GM trucks
• Works with LS1, LS2, LS3, LS6, LSA and other Vortec engines listed
• Serves as replacement for part number 605SOL

What materials and construction features ensure durability?

This adapter is machined from carbon steel for strength and long-term wear resistance. Threads are cut deeply and accurately to provide a tight mechanical fit while the included Viton O-rings resist heat and hydraulic fluid for a dependable seal under load.

• Carbon steel body for high tensile strength and corrosion resistance
• Precision-cut threads to reduce leak points and cross-threading risk
• Viton O-rings included to withstand heat and power-steering fluid
• Low magnetic conductivity and good high-temperature ductility

How simple is installation and what should I check after fitting?

Installation is straightforward: thread the adapter into the pump pressure tube, seat the O-ring, then attach the factory flared line. After assembly, bleed the steering system per your vehicle’s procedure and inspect for leaks around the adapter and hose ends at operating temperature.

• Hand-start threads, then torque to specification to avoid damage
• Verify proper O-ring seating before final tightening
• Bleed the steering system to remove air pockets after installation
• Check for leaks after a short test drive and at operating temperature

Who is this for: WIKIBB’s Power Steering Adapter Fitting kit is aimed at DIY mechanics, restorers and professional shops performing LS swaps or updating steering systems where modern o-ring pumps must mate to older flared lines. If you’re retaining original hose routing, preserving factory fittings, or restoring a classic GM vehicle while using a newer power steering pump, this adapter cuts installation time and avoids costly custom hose work.