Air Filter 17801-37021 for Toyota Corolla
1780137021 - Engine parts
Price Details
Dealer Price ≠ Your Price
Official dealer price is only a benchmark. Your LongTop quote is significantly lower.
| Brand | Longtop Supply Quote | Action |
|---|---|---|
| FAW Toyota | $5.37 | Check Better Price |
| Imported Toyota | $5.63 | Check Better Price |
| Lexus | $5.63 | Check Better Price |
Replacements
Alternative OE numbers related to this product.
| Brand | Original OE | Replacement OE |
|---|---|---|
| - | 1780137021 | 1780137020 |
Compatible Models
Vehicle models currently mapped to this OE part.
Show all 38 mapped vehicle models
Product Overview
The genuine Lexus air filter, OE 17801-37021, cleans air before it reaches the engine. It fits AURIS, AURIS/HYBRID (UKP), LEXUS CT200H, LEXUS NX SERIES, NOAH/VOXY/ESQUIRE and HARRIER/HYBRID, built from 2007 to 2019. 5 interchangeable part numbers are listed, including LX2870, C22009 and CA10741.
Ask for a wholesale quotation with your VIN or OE number; we ship worldwide.
Technical Specifications
| OE Number | 1780137021 |
| Part Name | Air Filter |
| Brand | Toyota |
| Type | Panel |
| Length | 220mm |
| Width | 186mm |
| Height | 38mm |
| Country of Origin | Japan |
OE Cross-Reference
| LX 2870 | Mahle |
| C 22 009 | Mann |
| CA10741 | Fram |
| A26114 | Purolator |
| 17801-YZZ12 | Toyota |
Questions and Answers
Which Toyota or Lexus models and years does 17801-37021 cover?
17801-37021 fits AURIS, AURIS/HYBRID (UKP), LEXUS CT200H, LEXUS NX SERIES, NOAH/VOXY/ESQUIRE and HARRIER/HYBRID, built from 2007 to 2019.
What is the cross-reference for 17801-37021?
5 numbers interchange with 17801-37021, including LX 2870 (Mahle), C 22 009 (Mann), CA10741 (Fram), A26114 (Purolator).
What are the dimensions of 17801-37021?
17801-37021 measures 220mm long, 186mm wide, and 38mm high.
How can I verify that 17801-37021 is a genuine Toyota part?
To verify this Air Filter, look for the ten-character number 17801-37021 on the box label together with the country-of-origin marking, then check that the gasket is heat-resistant acrylic rubber, and the element is coarse on the outside and fine on the inside, and that the element uses a daisy-shaped or crystal-type pleat pattern rather than a plain straight fold, with a smooth adhesive line bonding the media to the end caps. We can provide the invoice, packing list and CoO for any order.
How many pieces are needed for 17801-37021?
You get one piece per position – check the quantity required for your application.
How often should 17801-37021 be replaced?
Replace it normally every 30,000 km or 24 months, sooner in dusty conditions.
Is there anything I need to know before installing this part?
Worth knowing first: Compare the number on the part with your invoice before installation, and follow the torque values in the service manual.
Is the genuine part worth it compared with an aftermarket equivalent?
The genuine part differs in ways that show up in service: the bypass valve opens only at the designed pressure, so a clogged filter cannot starve the engine – many counterfeits omit it entirely, and the heat-resistant acrylic rubber gasket stays sealed at temperature instead of hardening and leaking. These are the aftermarket equivalents you may also see quoted.
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