Standard Ignition EOS34 Engine Oil Separator

Engine Oil Separator for Mazda Applications

Standard Ignition EOS34 is an engine oil separator for select Mazda vehicles, including the Mazda MX-5 Miata, Mazda 3, and Mazda 5. It is built with a single hose connector, one port, and an angled nipple orientation for direct replacement use in the crankcase ventilation path.

Key Features

• Engine oil separator for cylinder block component applications
• Angled nipple orientation for routing in tight engine bays
• 1 hose connector and 1 port
• No clamp included
• No mounting hardware included
• Standard Ignition EOS34 replacement part

Detailed Description

Standard Ignition EOS34 is a direct-fit engine oil separator used in Mazda crankcase ventilation systems to separate oil from airflow before it continues through the engine’s breather path. This part number is listed for 2004-2013 Mazda 3, 2006-2010 Mazda 5, and 2006-2015 Mazda MX-5 Miata applications. If you are searching for a Mazda MX-5 Miata oil separator or a Mazda 3 engine oil separator, EOS34 is the cataloged replacement to match those vehicles.

This part cross-references Monroe Shocks & Struts (e.g., EOS134, LF5013570) for the same application. Standard Ignition EOS34 is also referenced by part numbers SEP738 and MSAB10027.

What It Helps Address

• Oil carryover in the crankcase ventilation system
• Excess oil entering intake-related airflow paths
• Separator wear that can affect breather system function
• Replacement needs during engine service on Mazda 3, Mazda 5, and MX-5 Miata models

Installation Notes and Tips

Verify the hose routing, port count, and angled nipple orientation before installation. Compare the removed part to EOS34 to confirm fitment on your specific Mazda 3, Mazda 5, or Mazda MX-5 Miata model year. Because no clamp or mounting hardware is included, reuse serviceable existing components or source the correct hardware separately.

Quality Assurance

Standard Ignition supplies OE-style replacement engine management and emission-related components for service applications. EOS34 is cataloged for the listed Mazda fitments and cross-reference applications, supporting accurate part matching during repair.