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OE Quality
60-Day Returns
Standard IgnitionPart #: EOS66
Standard Ignition EOS66 Engine Oil Separator
11 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$126.74Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, CX-50 and CX-9
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Engine Oil Separator options
Standard Ignition EOS66 Engine Oil Separator
| Brand | Standard Ignition |
|---|---|
| Part Number | EOS66 |
| Attachment Method | Bolt on |
| Color/Finish | Black |
| Connector Gender | No connector |
| Inlet Diameter (in) | 0.04 |
| Inlet Diameter (mm) | 1.016 |
| Nipple Orientation | Angled |
| Outlet Diameter (in) | 0.07 |
| Outlet Diameter (mm) | 1.778 |
| Port Quantity | 1 |
This part fits 11 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2025 | Mazda | CX-50 | N/A | Includes PCV Valve |
| 2024 | Mazda | CX-50 | N/A | Includes PCV Valve |
| 2023 | Mazda | CX-50 | N/A | Includes PCV Valve |
| 2023 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2022 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2021 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2020 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2019 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2018 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2017 | Mazda | CX-9 | N/A | Includes PCV Valve |
| 2016 | Mazda | CX-9 | N/A | Includes PCV Valve |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
EOS166EOS66MSAC20004PWS313570SEP770
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.