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K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter

SKU: KNN33-2154

Engine Air Filter

KN Drop in Air Filters...

K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter

SKU: KNN33-2154

Engine Air Filter

KN Drop in Air Filters...

Sale ends in Calculating...

A$131.03 A$188.11
IN STOCK! Est Ship 3-5 days. In stock at 1 location (4 available)

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Description

Exclusive K&n Engineering flash sale discount at StreetFX!

Talk about timing! This is a limited offer while stocks last on various K&n Engineering part numbers. There's never been a better time to buy your K&n Engineering upgrades, so what are you waiting for?!

This item is currently on sale!

Same-day payment required to secure promotional price. Promotions may end early or be extended based on stock levels or other factors.

Replacement Air Filt

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!

Additional Information

SUBARU IMPREZA 98-05; LEGACY 98-04; OUTBACK 00-04

Part Type

Engine Air Filter

Product Overview

K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter.

Since 1969 K&N Engineering has been designing, manufacturing, and enhancing High-Flow Air Filters for the automotive and motorcycle enthusiast interested in maximizing horsepower and acceleration. Since K&Ns humble beginnings they have designed and manufactured over 2,400 High-Flow Air Filters to fit most modern passenger vehicles and over 500 High-Flow Air Intake Systems to fit vehicles driven by enthusiast minded drivers. K&N not only has more applications than any other manufacturer of similar product, K&N invented the High-Flow category and the High-Flow Technology that supports it. K&N also makes thousands of racing and specialty type air filters and is the only air filter used at the Indianapolis 500 Race.

FEATURES
• High Air Flow with Excellent Filtration
• Designed to Increase Horsepower and Acceleration
• Washable and Reusable
• Will NOT Void Vehicle Warranty
• Lasts up to 50,000 miles before cleaning is required depending on driving conditions
• K&N Million Mile Limited Warranty
• Emissions Legal in all 50 US States.
• Economical, a K&N Air Filter Will Last the Life of Your Automobile
• Works with Original Equipment Manufacturer Vehicle Electronics
• Easy High Performance Add-on
• Environmentally Friendly

Additional Application Notes
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 High-Flow Original Lifetime Replacement Air Filter
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 OEM 16546AA070 OEM #16546AA070
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 OEM 16546AA070; K&N Replacement Air Filter OEM 16546AA070 OEM #16546AA070
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 OEM 16546AA070; High-Flow Original Lifetime Replacement Air Filter OEM #16546AA070
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 K&N Replacement Air Filter
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 OEM 16546AA070; High-Flow Original Lifetime Replacement Air Filter OEM 16546AA070 OEM #16546AA070
• High-Flow Original Lifetime Replacement Air Filter
• OEM 16546AA070; High-Flow Original Lifetime Replacement Air Filter
• Panel; H-0.938 in.; L-14.5 in.; W-6.5 in.; OEM# 16546AA070 OEM 16546AA070 OEM #16546AA070 High-Flow Original Lifetime Replacement Air Filter
• OEM 16546AA070

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-11 11:10:00

Features

  • Million Mile Limited Warranty
  • REDUCES WASTE: Over 200 million disposable air filters and their packaging waste wind up in landfills each year- reusable filters help reduce waste in our landfills

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Air Filter Material:Cotton Gauze
Air Filter Shape:Panel
Automotive Item Grade:High Performance
Color:Heather Red
Description:Replacement Air Filter
Diameter Inside (in.):OEM
Diameter Outside (in.):OEM
Filter Material:Cotton Gauze
Filter Re-Oiling Amount:1.39 oz (41 ml)
Filter Style:Dry
Flange Angle:0 Degree
Frame Design:Flexible
Height (in.):0.938 in. (24mm)
Height:0.938 in (24 mm)
Inside Diameter:OEM
Item Height:0.938 in. (24mm)
Item Type:High Performance
Item Weight:1.200 lbs. (0.5 kg)
Machine Washable:Yes
Oil Included:Yes
Outside Diameter:OEM
Outside Length:14.500 in. (368mm)
Outside Width:6.500 in. (165mm)
Overall Filter Efficiency:Up To 99% Efficiency
Package Content:1
Package Contents:1 Air Filter
Package Material:Paperboard
Package Quantity:1
Package Type:Box
Part Number:knn33-2154
Pre-Screened:No
Product Box Height:17.190 in. (437mm)
Product Box Length:8.310 in. (211mm)
Product Box Width:1.750 in. (44 mm)
Product Style:Panel Air Filter
Shape:Panel
Title:K&N 33-2154 Replacement Air Filter
Warranty:No-Hassle Lifetime Limited
Washable:Yes
Weight:1.2 lb (0.5 kg)
Width (in.):6.5
Width:6.500 in.

Product Downloads

# Document Type Download
1. Technical Bulletin

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 04:27:27

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s K&n Engineering, K AND N ENGINEERING, K&N, K&n Filters
StreetFX SKU knn33-2154
SFX Item ID 5354659
Accounting SKU knn-33-2154
Manufacturer SKU 33-2154
Manufacturer UPC 024844078391
Alternative References 33-2154, KAN33-2154

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