Greddy 11908610 1/8 BSP Male to 1/8 NPT Female Aluminum Adapter Fitting

The GReddy 11908610 is a precision-machined aluminum thread adapter designed to bridge the gap between JDM and domestic plumbing standards. It features a 1/8 BSP (British Standard Pipe) male thread on one end and a 1/8 NPT female thread on the other, allowing standard US-spec sensors and fittings to be installed directly into GReddy components and other Japanese-market parts that use 1/8 BSP ports.

1/8 BSP (also known as 1/8 PT or JDM 1/8PT) is the standard thread type found on a wide range of Japanese performance components, including GReddy oil cooler adapters, turbos, and intake/boost piping. Because 1/8 BSP and 1/8 NPT have different thread pitches and sealing profiles, they are not interchangeable — this adapter is the correct solution for making that connection safely and securely.

Key Features:

• Converts 1/8 BSP (JDM 1/8PT) male to 1/8 NPT female thread
• Machined from lightweight black anodized aluminum
• Ideal for installing US-spec pressure, temperature, or vacuum sensors into GReddy BSP-threaded ports
• Compatible with oil cooler adapters, oil lines, water lines, and vacuum line applications
• Genuine GReddy Performance Products part — OEM quality fit and finish
• Part Number: 11908610

This fitting is an essential adapter for builders working with GReddy oil systems, turbo kits, or any Japanese platform component that uses 1/8 BSP threads. It eliminates the need for makeshift solutions and ensures a leak-free, properly threaded connection.