2018 Acura RDX cabin air filter: Sizes & Replacement Parts
Catalog-backed cabin air filter part numbers for the 2018 Acura RDX include WIX 24815 / Purolator C35519C. Confirm the final part number in the retailer selector before checkout.
Looking for the engine air filter instead? 2018 Acura RDX engine air filter →
Cabin filter details
Checked catalogs did not specify the filter access location. On most vehicles, the cabin air filter is accessed behind or under the glove box on the passenger side. Check your owner's manual for the exact access procedure.
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 |
|---|---|---|---|---|
| 24815 Top Pick | WIX | Basic | WIX Filters | Check Fit on Amazon |
| 24815XP | WIX | Basic | WIX Filters | Check Fit on Amazon |
| C35519C | Purolator | Carbon | Purolator Now | Check Fit on Amazon |
| C35519 | Purolator | Carbon | Purolator Now | Check Fit on Amazon |
| PBC35519 | Purolator | Carbon | Purolator Now | Check Fit on Amazon |
| TC35519 | Purolator | Carbon | Purolator Now | Check Fit on Amazon |
| 6029C | Bosch | HEPA | Bosch Auto Parts | Check Fit on Amazon |
| P3875WS | Bosch | HEPA | Bosch Auto Parts | 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 2018 Acura RDX.
| Filter type | Listed part numbers |
|---|---|
| Basic | WIX 24815, WIX 24815XP |
| Carbon | Purolator C35519C, Purolator C35519, Purolator PBC35519, Purolator TC35519 |
| HEPA | Bosch 6029C, Bosch P3875WS |
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 3 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 |
| Bosch Auto Parts | Corroboration | Filter part number | 2026-06-26 |
Checked catalogs: WIX Filters, Purolator Now, Bosch Auto Parts. Filter location and replacement interval are not listed unless a source provides them for this exact vehicle.
2018 Acura RDX maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter WIX 24815 / Purolator C35519C Checked
- Engine air filter 2018 Acura RDX engine filter part numbers
- Wiper blade size 2018 Acura RDX driver & passenger blade sizes
- Oil type & capacity 2018 Acura RDX oil viscosity & fill amount
Before you buy
AutoZone
Use AutoZone's vehicle selector for the 2018 Acura RDX before checkout.
Check Fit on AutoZoneO'Reilly
Use O'Reilly's vehicle selector for the 2018 Acura RDX before checkout.
Check Fit on O'ReillyQuestions this page answers
Which 2018 Acura RDX cabin air filter part numbers are listed?
The current catalog-backed list includes WIX 24815, WIX 24815XP, Purolator C35519C, Purolator C35519, Purolator PBC35519, Purolator TC35519, Bosch 6029C, Bosch P3875WS. The table above keeps each part number tied to the catalog source that listed it.
Is the 2018 Acura RDX 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.
Check another vehicle
All Acura RDX years with checked data:
Looking for a different make or model? Use the selector below: