Standard Ignition EOS37 Engine Oil Separator
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Standard Ignition

Standard Ignition EOS37 Engine Oil Separator

Brand Standard Ignition EOS37
Clamp Included No
Connector Quantity 0
Contents 1 oil seperator
Hose Connector Quantity 1
Mounting Hardware Included No
Nipple Orientation Angled
Port Quantity 1
Protective Sleeve Included No
Terminal Quantity 0
Fits Mazda · 30 vehicles

OE-style replacement. Cataloged engine oil separator for application-specific service.

Angled nipple design. Supports routing with one hose connector and one port.

Cross-references Standard Ignition EOS37, EOS137 and MSAB10030 for the same application. See all 5.

$84.12Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Engine Oil Separator Overview

The Standard Ignition EOS37 engine oil separator is a direct-fit replacement for select Mazda applications that require PCV valve inclusion. It is built for vehicles where crankcase vapor control and oil separation are part of normal engine operation.

Fits 2014-2026 Mazda CX-5, N/A. Fits 2014-2025 Mazda 3, N/A. Fits 2017-2021 Mazda 6, N/A.

Key Features

  • Engine oil separator for crankcase ventilation service
  • Includes PCV valve for the listed applications
  • Angled nipple orientation for application-specific routing
  • One hose connector and one port for a simplified connection layout
  • Standard Ignition part number EOS37 for catalog matching

Detailed Description

The EOS37 is an engine oil separator used in Mazda CX-5, Mazda 3, and Mazda 6 applications listed above. It is specified with an angled nipple, one hose connector, and one port, and the included PCV valve note should be matched to the vehicle’s original configuration before installation. For buyers searching for a Mazda CX-5 engine oil separator, Mazda 3 PCV-related separator, or Mazda 6 crankcase ventilation replacement, EOS37 provides a cataloged fitment reference under Standard Ignition EOS37.

This part cross-references Monroe Shocks & Struts (e.g., EOS137, MSAB10030) for the same application.

What It Is Used For

  • Oil mist separation in the crankcase ventilation system
  • Replacement of a worn or contaminated separator assembly
  • Restoring proper PCV-related airflow management
  • Addressing oil carryover in the intake tract

Installation Notes and Tips

Verify the vehicle’s original separator layout, hose routing, and PCV valve requirement before installation. This unit does not include mounting hardware, clamps, or a protective sleeve. Confirm connector count, port count, and nipple orientation against the removed part to ensure correct installation.

Quality Assurance

Standard Ignition cataloged replacement part EOS37 is listed with application-specific fitment for the vehicles shown above. Match the part number EOS37 and the vehicle notes before ordering.

Related reading

This part fits 30 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2026MazdaCX-5——Includes PCV Valve
2025Mazda32.5LL4Includes PCV Valve
2025MazdaCX-5——Includes PCV Valve
2024Mazda32.5LL4Includes PCV Valve
2024MazdaCX-5——Includes PCV Valve
2023Mazda32.5LL4Includes PCV Valve
2023MazdaCX-5——Includes PCV Valve
2022Mazda32.5LL4Includes PCV Valve
2022MazdaCX-5——Includes PCV Valve
2021Mazda32.5LL4Includes PCV Valve
2021Mazda6——Includes PCV Valve
2021MazdaCX-5——Includes PCV Valve
2020Mazda32.5LL4Includes PCV Valve
2020Mazda6——Includes PCV Valve
2020MazdaCX-5——Includes PCV Valve
2019Mazda32.5LL4Includes PCV Valve
2019Mazda6——Includes PCV Valve
2019MazdaCX-52.5LL4Includes PCV Valve
2018Mazda32.5LL4Includes PCV Valve
2018Mazda6——Includes PCV Valve
2018MazdaCX-52.5LL4Includes PCV Valve
2017Mazda32.5LL4Includes PCV Valve
2017Mazda6——Includes PCV Valve
2017MazdaCX-52.5LL4Includes PCV Valve
2016Mazda32.5LL4Includes PCV Valve
2016MazdaCX-52.5LL4Includes PCV Valve
2015Mazda32.5LL4Includes PCV Valve
2015MazdaCX-52.5LL4Includes PCV Valve
2014Mazda32.5LL4Includes PCV Valve
2014MazdaCX-52.5LL4Includes PCV Valve
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — EOS37EOS137MSAB10030PX9R13570SEP741