Subaru
Genuine Subaru 38325AA032 Automatic Transmission Filter (Spin-On, 4EAT)
Genuine Subaru 38325AA032 Automatic Transmission Filter (Spin-On, 4EAT)
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- ✔ Genuine Subaru external spin-on ATF filter — 38325AA032
- ✔ For 4-speed (4EAT) automatics 1999–2009
- ✔ Replaces older numbers 38325KA000 / 38325AA030 / 38325AA031
- ✔ Serviceable without dropping the transmission pan
Genuine Subaru 38325AA032 Automatic Transmission Filter
Delayed or harsh shifting, or just doing a proper ATF service? On Subaru’s 4-speed (4EAT) automatics the transmission fluid runs through an external spin-on filter — mounted like an oil filter, so it can be replaced in minutes without dropping the pan.
The genuine 38325AA032 filter traps clutch material and wear debris before they reach the valve body and solenoids. Replacing it with every ATF service is cheap insurance for smooth shifting.
Part Numbers
- 38325AA032 (current Genuine Subaru number)
- Replaces: 38325KA000, 38325AA030, 38325AA031
Cross Reference (verified)
- WIX 51365
- HASTINGS TF170
- VAICO V63-0071
When to Replace — Common Symptoms
- Delayed or harsh shifts
- Whining noise from fluid starvation
- Transmission running hotter than normal
- Scheduled ATF service (replace filter together with fluid)
Product Highlights
- Genuine Subaru part — correct thread, relief valve and media
- External spin-on design — quick service
- Full-flow filtration protecting valve body and solenoids
- Direct replacement for all earlier numbers of this filter family
Condition
New, Genuine Subaru part
Product Type
Automatic transmission fluid filter assembly (external spin-on)
Function
Cleans automatic transmission fluid in a full-flow circuit on 4EAT automatics, trapping clutch and wear debris before the valve body.
Compatible Vehicles (automatic transmission)
| Model | Years |
| Forester | 1999–2008 |
| Impreza (incl. WRX/STI with AT) | 1999–2008 |
| Legacy | 1999–2009 |
| Outback | 1999–2009 |
| Baja | 2003–2006 |
| Tribeca | 2006–2009 |
Important: for 4-speed (4EAT) automatics only — not for CVT or manual transmissions. Verify by VIN before ordering.
Package Contents
- 1 × Genuine Subaru 38325AA032 transmission filter
Technical Specifications
| Brand | Subaru |
| Manufacturer | Subaru Corporation |
| Part Number | 38325AA032 |
| Superseded Numbers | 38325KA000 / 38325AA030 / 38325AA031 |
| Design | External spin-on, full-flow |
| Dimensions (per WIX 51365 equivalent) | Height 2.577 in · OD 2.685 in · thread M20×1.5 |
| Condition | New |
Warranty
Manufacturer warranty may vary by supplier and region. Contact us before purchase if warranty confirmation is required.
FAQ
Is this for CVT transmissions?
No — it fits the 4-speed 4EAT automatic used through the late 2000s. CVT models use a different filter.
My old filter is numbered 38325KA000 — is this the right part?
Yes. 38325AA032 is the current Subaru number that replaces 38325KA000, 38325AA030 and 38325AA031.
How hard is the replacement?
Same as an engine oil filter: unscrew the old one, lightly oil the new gasket, spin on. Replace together with the ATF.
Does WIX 51365 fit instead?
WIX 51365 is a verified aftermarket equivalent. This listing is for the genuine Subaru filter.
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