# K&N 33-2943 Replacement Air Filter

K&N 33-2943 is a vehicle-specific replacement air filter listed as a rectangular panel for the 2011 BMW 635d 3.0L L6 Diesel. It is washable and reusable, but confirm the part number against your vehicle before ordering.

- [Original product page](https://aussiedealscout.com/product/kn-33-2943-replacement-air-filter)
- [View offer](https://aussiedealscout.com/visit/kn-33-2943-replacement-air-filter)
- Market: AU
- Language: en-AU
- Currency: AUD
- Brand: K&N
- Model: 33-2943
- Category: Cars & Motorcycles > Auto Parts & Maintenance > Mechanical Parts
- Price: 73.78 AUD
- Previous price: 126.08 AUD
- Discount: 41%
- Price checked: 2026-11-13T11:54:04.748Z
- Rating: 4.7 / 5
- Reviews: 102

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Manufacturer describes it as washable and reusable, which may reduce the need to replace a disposable filter each service.
- The listing claims high airflow and filtration, and says the filter is designed to work with original equipment vehicle electronics.
- Cleaning is claimed to be needed after up to 50,000 miles, depending on driving conditions.

## Pros

- Reusable construction offers an alternative to replacing a disposable filter at every change interval.
- Vehicle-specific fit and an OEM-equivalent part number give buyers details to compare against their existing filter.

## Specifications

### Identity
- Brand: K&N
- Model: 33-2943
- Fit type: Vehicle Specific Fit
- Product grade: Performance Part
- OEM equivalent part number: 13717793647
### Dimensions and installation
- Form factor: Rectangular
- Dimensions listed: 24L x 111W x 152H millimetres
- Weight listed: 0.77 Kilograms
### Use and support
- Cleaning interval claim: Lasts up to 50,000 miles before cleaning is required depending on driving conditions
- Warranty description: 1,000,000 Miles/10 Year Warranty
- EU spare part availability duration: 5 Years

## Before you buy

- Confirm compatibility with your exact vehicle and existing filter before purchase. The included-components entry names a 2011 BMW 635d 3.0L L6 Diesel, while the general fit information only says vehicle-specific. The stated cleaning interval depends on driving conditions, and the warranty and spare-part availability are listing claims.

## In the box

- 1 x K&N 33-2943 Panel Air Filter for 2011 BMW 635d 3.0L L6 Diesel (Included)

## A good fit for

- Owners whose vehicle and existing filter match K&N part 33-2943.
- Buyers seeking a washable, reusable replacement air filter.

## Less suited to

- Buyers unable to confirm that part 33-2943 fits their exact vehicle.
- Anyone seeking customer evidence of a guaranteed power or fuel-economy improvement.

## Customer feedback

Customer feedback highlights perceived quality, while reports about performance are mixed. One customer reported fuel efficiency dropping by about 3 mpg. For buyers considering the claimed airflow and performance benefits, these reports are a reason not to assume a fuel-economy gain. The aggregate ratings lean positive but do not establish a specific result for your vehicle.
- Positive themes: Customers find the filter to be of excellent quality.
- Mixed feedback: Feedback on performance is mixed. One customer reported a fuel-efficiency drop of about 3 mpg.

## Frequently asked questions

### Will K&N 33-2943 fit my vehicle?
The listing describes a vehicle-specific fit and names a 2011 BMW 635d 3.0L L6 Diesel in its included-components entry. Check your exact vehicle and current filter against part 33-2943 before ordering.
### Can this filter be cleaned and reused?
Yes. The listing describes it as washable and reusable and says cleaning may be needed after up to 50,000 miles, depending on driving conditions.
### Does it guarantee improved performance or fuel economy?
No guaranteed result is established. K&N claims high airflow and a design intended to improve performance, while customer feedback reports mixed performance experiences, including one report of lower fuel efficiency.

## Alternative options

- [K&N 33-5083 Replacement High Flow Air Filter \| Fits Select 2019-2026 CADILLAC/CHEVROLET/GMC: Escalade/Silverado/Suburban/Tahoe/Sierra/Yukon \(See Product Description\)](https://aussiedealscout.com/visit/kn-33-2943-replacement-air-filter)
- [K&N VF2001 Washable & Reusable Cabin Air Filter Cleans and Freshens Incoming Air for your Acura, Honda](https://aussiedealscout.com/visit/kn-33-2943-replacement-air-filter)
- [K&N 33-2385 High Performance Replacement Air filters for 2007-2017 Ford/Lincoln Truck and SUV V6/V8/V10](https://aussiedealscout.com/visit/kn-33-2943-replacement-air-filter)
- [K&N High Performance Replacement Air Filter for Toyota, Lexus Vehicles - 33-2443, Black](https://aussiedealscout.com/visit/kn-33-2943-replacement-air-filter)
- [K&N 33-2031-2 High Performance Replacement Air Filter](https://aussiedealscout.com/visit/kn-33-2943-replacement-air-filter)
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## Images

![K&N 33-2943 Replacement Air Filter — 1](https://aussiedealscout.com/i/TbCKVOmBuFEjRcfitpuocCjcBe0v-ivL9K4Ytw-5MLb0IbzxURSmqx7bxh6g4QFHEpgheKg7bhPbFsKNyvDuhObdzbQj2hE9OgylOMWWxBqZq-nLGJcqDJnM.jpg)

![K&N 33-2943 Replacement Air Filter — 2](https://aussiedealscout.com/i/dMTIq6HF1PUFFft5hfIw1nHUI2QVzEEPKa03_GXNoEaQSZuJPPseLnlKdknYbSe9WQa0JtzTIuXRkcLsI65Le95cSlWWX3zNOLJM7ZNuPQvgYEx7.jpg)

![K&N 33-2943 Replacement Air Filter — 3](https://aussiedealscout.com/i/FwOqDWNkDFp_euAtknFneCwWFOStihl8koq2bRM8Nsw4z1ACLMPvkLWZ42QbIlNdZ260v56DZrR5G0GaSutNmkm2FVaBbIGRoJ_ex0kTmX3C0n3D.jpg)

![K&N 33-2943 Replacement Air Filter — 4](https://aussiedealscout.com/i/odMz_TUiKw3lMCb0UUOl-oH4dqlo23NVGvLDVdFfQgCxhbg8g5nn5HOW3lXfm0hspbZVJCfdqQRzQrAZrozSNMsHJ7n1GVBsLl2M7BwDSFTGBOO9.jpg)

![K&N 33-2943 Replacement Air Filter — 5](https://aussiedealscout.com/i/ZQUMeU9yRHiP_ebqO1Jn2YyFOShX-dcPVM_3twlymSdGYdW7AcP1mZ1hCFK-GzXMesvbLMvHw4zTf5xhVsDLTPkuG8RG2OXm2zzmN9SsCkutaVTReTsv7LRP.jpg)