2020 BMW Z4 cabin air filter: Sizes & Replacement Parts
Catalog-backed cabin air filter part numbers for the 2020 BMW Z4 include WIX WP10427 / Purolator C31485C. Confirm the final part number in the retailer selector before checkout.
Looking for the engine air filter instead? 2020 BMW Z4 engine air filter →
Cabin filter details
Checked catalogs did not specify the filter access location. For most BMW Z4 vehicles, the cabin air filter is typically located under the passenger-side dashboard or behind the glove box (varies by model). Confirm the exact procedure in your owner's manual before starting service.
Most cabin air filter manufacturers recommend replacing every 12,000–15,000 miles or once a year under normal driving conditions. High-dust or high-pollution environments may require more frequent changes. Confirm the exact interval in your owner's manual — this is general industry guidance, not a vehicle-specific specification.
Cabin air filter part numbers
| Part number | Brand | Filter type | Source | Shop |
|---|---|---|---|---|
| WP10427 Top Pick | WIX | Basic | WIX Filters | Check Fit on Amazon |
| C31485C | Purolator | Carbon | Purolator Now | Check Fit on Amazon |
| TC31485 | Purolator | Carbon | Purolator Now | Check Fit on Amazon |
Cabin filter type options
The current catalog data separates the listed part numbers by filter type. Pick the type you want, then confirm the exact part number in the retailer selector for 2020 BMW Z4.
| Filter type | Listed part numbers |
|---|---|
| Basic | WIX WP10427 |
| Carbon | Purolator C31485C, Purolator TC31485 |
Fitment scope and limits
Cabin air filter fitment is tracked at the year, make, and model level because the cabin filter sits in the HVAC system rather than the engine intake path.
The checked catalogs did not provide source-backed cabin filter location or replacement interval for this exact record, so this page does not publish those fields.
Catalogs can list more than one part number for the same vehicle. Use this page to compare the listed numbers, then use the seller's vehicle selector before ordering.
Source notes
Listed in 2 catalogs. These part numbers come from filter manufacturer catalogs. Use the source trail below to see which catalog supported this page.
| Source | Role | Supports | Checked |
|---|---|---|---|
| WIX Filters | Primary | Filter part number | 2026-06-26 |
| Purolator Now | Corroboration | Filter part number | 2026-06-26 |
Checked catalogs: WIX Filters, Purolator Now. Filter location and replacement interval are not listed unless a source provides them for this exact vehicle.
2020 BMW Z4 maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter WIX WP10427 / Purolator C31485C Checked
- Engine air filter 2020 BMW Z4 engine filter part numbers
- Wiper blade size 2020 BMW Z4 driver & passenger blade sizes
- Oil type & capacity 2020 BMW Z4 oil viscosity & fill amount
Before you buy
Questions this page answers
Which 2020 BMW Z4 cabin air filter part numbers are listed?
The current catalog-backed list includes WIX WP10427, Purolator C31485C, Purolator TC31485. The table above keeps each part number tied to the catalog source that listed it.
Is the 2020 BMW Z4 cabin air filter engine-specific?
Cabin air filter fitment is tracked at the year, make, and model level because the cabin filter sits in the HVAC system rather than the engine intake path.
Does this page confirm location or replacement interval?
The checked catalogs did not provide source-backed cabin filter location or replacement interval for this exact record, so this page does not publish those fields.
General industry guidance (not vehicle-specific): Most cabin air filter manufacturers recommend replacing every 12,000–15,000 miles or once a year under normal driving conditions. High-dust or high-pollution environments may require more frequent changes. Confirm the exact interval in your owner's manual — this is general industry guidance, not a vehicle-specific specification.
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