Pronto PO4612-MZ1 Engine Oil Filter

OE Style Oil Filter for Mazda Applications

The Pronto OE Style engine oil filter is built for Mazda engines that call for a spin-on filter with OE-style fit and function. Part number PO4612-MZ1 is specified for a range of Mazda vehicles, including Mazda Miata, Mazda RX-8, Mazda Protege, and Mazda 626 applications.

With a 3.05-inch height, 2.57-inch outside diameter top, 20MX1.5 inside thread size, anti-drain back valve, and bypass relief valve, this Pronto oil filter is configured to support consistent oil flow and filtration in the engine lubrication system.

Key Features

• OE Style engine oil filter for Mazda applications
• Spin-on filter design for straightforward service replacement
• Anti-drain back valve helps retain oil in the filter after shutdown
• Bypass relief valve provides internal flow control under restricted conditions
• 3.05-inch height with 2.57-inch outside diameter top
• 20MX1.5 thread size
• Closed outer diameter bottom

Detailed Product Overview

Pronto PO4612-MZ1 is an OE Style spin-on engine oil filter engineered for Mazda vehicles that use this thread and sealing configuration. It is a direct-fit service part for Mazda Miata, Mazda RX-8, Mazda Protege, Mazda Protege5, Mazda 626, Mazda MX-6, Mazda MX-3, Mazda RX-7, Mazda 323, and Mazda 2 applications listed in the fitment data. The anti-drain back valve helps keep oil in the filter when the engine is off, while the bypass relief valve supports oil circulation if the filter media becomes restricted. This makes PO4612-MZ1 a practical replacement choice for routine oil service on Mazda engines that require an OE-style spin-on filter.

This part cross-references Mazda OE part number B6Y114302A for the same application.

Common Issues This Oil Filter Can Address

• Replacing a worn or clogged engine oil filter during scheduled maintenance
• Restoring proper oil filtration after extended service intervals
• Addressing oil drain-back concerns after engine shutdown
• Supporting oil flow when a filter begins to load with contaminants
• Matching OE-style filter dimensions and thread specifications for Mazda service

Installation Notes and Tips

Verify the thread size, sealing surface, and overall dimensions before installation. Confirm the vehicle’s engine uses a spin-on oil filter with 20MX1.5 threads and the listed OE-style dimensions. Replace the filter during an oil change and follow the vehicle manufacturer’s service procedure for oil level and filter sealing.

Quality Assurance

Pronto OE Style parts are built to match the application-specific requirements listed in the fitment data. PO4612-MZ1 is cataloged for Mazda oil filter service where OE-style dimensions and valve features are required.