Pronto PO4615-SB5 Engine Oil Filter

OE Style Engine Oil Filter for Subaru Applications

The Pronto OE Style PO4615-SB5 is a spin-on engine oil filter built for Subaru engines that use the M20x1.5-6H thread size. It is specified with an anti-drain back valve and a bypass relief valve to support oil flow control during startup and under restricted-flow conditions.

Compatible With Subaru Baja, Forester, Impreza, Legacy, and Outback applications across the 1997-2005 model years. The Pronto PO4615-SB5 is an OE-style replacement for drivers looking for a direct-fit oil filter with the correct dimensions and thread specification.

Key Features

• OE Style replacement oil filter for Subaru engine service
• Spin-on filter type for straightforward service replacement
• Anti-drain back valve helps retain oil in the filter after shutdown
• Bypass relief valve supports oil delivery if the filter media becomes restricted
• Height: 2.56 in.
• Outside diameter top: 2.69 in.
• Inside thread size: M20x1.5-6H
• Closed outer diameter bottom

Product Details

Pronto’s OE Style line focuses on replacement parts that follow original equipment-style fitment and function. This engine oil filter, part number PO4615-SB5, is built around the dimensions and thread pattern used on select Subaru engines, making it a practical choice for routine maintenance on Subaru Forester, Subaru Impreza, Subaru Legacy, Subaru Outback, and Subaru Baja models. This part cross-references Subaru 15208AA080 for the same application.

What It Helps Address

• Oil contamination from normal engine wear and suspended debris
• Oil drain-back after shutdown that can delay lubrication at startup
• Restricted oil flow caused by a loaded filter element
• Incorrect thread fitment when replacing the original Subaru oil filter
• Routine service needs on high-mileage Subaru engines

Installation Notes and Tips

Verify the thread size, sealing surface, and filter dimensions before installation. Replace the filter during scheduled oil service, and follow the vehicle manufacturer’s oil change procedure for proper tightening and sealing. Confirm fitment by year, make, and model before ordering, especially for Subaru Forester, Impreza, Legacy, and Outback applications.

Quality Assurance

This Pronto PO4615-SB5 oil filter is built to OE-style specifications for the listed Subaru applications. Its anti-drain back valve, bypass relief valve, and spin-on construction support consistent service replacement for 1997-2005 Subaru models covered in the fitment data.