K&N / HIGH-FLOW REPLACEMENT FILTER

Factory fit.
Performance flow.

K&N 33-2304 Performance Panel Air Filter — selected Subaru applications

A washable, reusable K&N replacement air filter for the matching factory airbox. Supplied pre-oiled and ready to fit.

Replacement filterOiled cotton mediaWashable & reusable

£64.99

Includes VAT at 20% · Great Britain delivery included

Check vehicle fitment

Selected Subaru Impreza, Forester, Legacy and Outback airboxes. Subaru models and engine generations use multiple filters: verify OE number and exact year.

Estimated delivery: 3–5 working daysRequest to order ↗

£64.99 total. Check fitment and our terms, delivery and returns information before ordering.

Made to fitMatch the original airbox and part reference
Pre-oiled cottonReady for first installation
Washable & reusableCare for the filter and use it again

Detail

Product details

A washable, reusable K&N replacement air filter for the matching factory airbox. Supplied pre-oiled and ready to fit.

DESIGNED FOR YOUR NEXT DRIVE

Keep the fit. Improve the flow.

A washable, reusable K&N replacement air filter for the matching factory airbox. Supplied pre-oiled and ready to fit.

  • Washable and reusable cotton gauze filter
  • Pre-oiled for first installation
  • Check the exact OE reference and factory airbox before ordering
  • K&N No-Hassle Lifetime Limited Warranty, subject to manufacturer terms

Product specifications

Brand / part numberK&N / 33-2304
Pack contents1 replacement air filter
MediaPre-oiled cotton gauze
WashableYes
Dimensions (mm)length 222, width 217, height 24
Selected OE cross references16546AA090 / 16546AA10A / 16546AA120 / 16546AA12A / 46051FG000

FITMENT FIRST

Check the exact application.

Selected Subaru Impreza, Forester, Legacy and Outback airboxes. Subaru models and engine generations use multiple filters: verify OE number and exact year.

A model name alone does not establish compatibility. Match the original filter reference, engine, model year and airbox layout. Send your details if you need help before ordering.

Ask about your vehicle ↗

A reusable replacement

This filter replaces the matching original airbox element. It is not a complete open induction kit. Keep the factory airbox and check the sealing surface during installation.

No specific horsepower gain is claimed. Results depend on the vehicle and its condition.

Clean. Dry. Re-oil.

Maintain this oiled cotton filter using suitable K&N cleaner and filter oil, such as the 99-5050 Recharger kit. Cleaning products are not included. The new filter arrives pre-oiled; do not add oil before first use. Follow K&N cleaning instructions, rinse gently, allow it to dry naturally and completely, then apply the specified amount of oil. Do not use this oiling method on Dryflow or cabin filters.

K&N No-Hassle Lifetime Limited Warranty applies subject to manufacturer eligibility and terms. Statutory rights are unaffected.

Delivery & support

Estimated delivery: 3–5 working days. Request to order.

Great Britain delivery included. England, Scotland and Wales only; Northern Ireland excluded.

Features

Features

  • Washable and reusable cotton gauze filter
  • Pre-oiled for first installation
  • Check the exact OE reference and factory airbox before ordering
  • K&N No-Hassle Lifetime Limited Warranty, subject to manufacturer terms

Delivery

Delivery information

Currently unavailable to order. Contact us for availability.

Great Britain delivery included. England, Scotland and Wales only; Northern Ireland excluded.

Delivery to England, Scotland and Wales only. Northern Ireland, Channel Islands and Isle of Man are excluded. Working days exclude weekends and bank holidays. Estimates are not guaranteed; contact us before ordering if you need a specific date.

Full delivery information ↗

Returns

If you’re not happy with your item or you’ve changed your mind.

We want you to be happy with your purchase. If you need to return something, contact orders@ttrpracing.com with your order number and the item details, and we’ll help you through the process.

Under 14 days

  • Tell us you wish to cancel within 14 days, starting the day after you receive your goods. You then have a further 14 days to send them back. You can request an exchange, subject to availability.
  • You pay the direct return costs for a change-of-mind return. We recommend a tracked service and appropriate insurance. Keep proof of posting.
  • You may open the packaging and inspect an item as you would in a shop. We may deduct for loss in value caused by handling beyond what is necessary to check its nature, characteristics and functioning. Opening the packaging alone does not remove your cancellation rights.
  • Return all supplied parts and packaging where possible. Pack the item securely in an outer box; avoid attaching courier labels or tape directly to the product packaging.
  • Include your name, order number and contact details so we can identify your return. A returns form or a reason for cancelling is not required to exercise your statutory cancellation rights.
  • We do not charge a restocking fee. For a statutory cancellation, we refund within 14 days of receiving the goods or evidence you sent them back, whichever is earlier. We refund the item price and standard outbound delivery paid; any extra paid for optional premium delivery is excluded. Refunds use your original payment method.

After 14 days

We do not offer change-of-mind returns where you first notify us after the 14-day cancellation period. Your rights for faulty, incorrect or misdescribed goods are separate and continue to apply.

Exclusions from change-of-mind returns

The cancellation right does not normally apply to goods made to your specifications or clearly personalised, including genuinely bespoke cut-to-length items. Any applicable exclusion will be identified before ordering. A standard product being ordered from a supplier or described as a “special order” does not, by itself, remove your cancellation rights. These exclusions do not affect rights for faulty or misdescribed goods.

If your product becomes faulty.

Contact our customer service team with your order number and a description of the fault. We may suggest basic troubleshooting or manufacturer support where helpful, but this does not replace your rights against us as the seller.

Under 30 days

  • If goods are faulty, not as described or unfit for their agreed purpose, consumers normally have a 30-day short-term right to reject them for a refund. You can ask about an exchange instead.
  • Contact us for return arrangements. Include a description of the problem and your order reference. We will inspect the item and cover reasonable return carriage for a valid faulty-item claim.
  • If we cannot reproduce a reported fault, we will discuss the findings and next steps with you. We will explain and agree any proposed charge before incurring it; your statutory rights remain unaffected.

After 30 days

You may still be entitled to a repair or replacement and, where the legal conditions are met, a price reduction or refund. We will carry out a statutory repair or replacement within a reasonable time, without significant inconvenience and at no cost to you, including necessary postage. Your rights are not limited to the manufacturer’s warranty. We can also help with a separate manufacturer warranty where supplied.

Damage, installation and wear

Damage caused by misuse, incorrect installation or normal wear is not a manufacturing defect. An exclusion applies only where it caused the problem being claimed for. We recommend professional installation where appropriate; this does not remove your statutory rights.

How to contact us or cancel

Email a clear cancellation statement to orders@ttrpracing.com, including your name, address, order details and delivery date. You can also write to Trading Parts UK Ltd, 19 Heathfield Rise, Rishworth, Sowerby Bridge, HX6 4RS. Contact us to confirm return instructions; our approval is not required for a statutory cancellation.

This consumer policy applies to new direct website orders from 27 October 2026. Any longer returns period promised when you placed an earlier order remains available. Marketplace purchases follow the marketplace support process; business orders follow the terms agreed in their quote. Your statutory consumer rights are unaffected.

A SECOND PAIR OF EYES

Ask us to check.

Share your vehicle and existing part details so we can help you choose. If you have photos of the original part or its label, attach them to your email.

This creates a draft in your email app. Review and send it to request a fitment check.

orders@ttrpracing.com