AIR FILTERS / REPLACEMENT FOAM
Mushroom filter foam insert
Replacement foam for a compatible mushroom-style air filter. Choose green, blue, red or yellow and check your existing insert dimensions before ordering.
Green selected

Air filters
Mushroom filter foam insert · Green
Amazon listing · Checked 21 October 2026 · One rating shared across all four colours
A green replacement foam element for a compatible mushroom-style air filter.
Includes VAT at 20%
£2.99 Great Britain delivery
Secure checkout on PayPal. Delivery is £2.99 per order, in addition to the product price. Please check fitment before buying. For delivery outside the UK, contact us before ordering.
Ask about fitment or your order ↗BEFORE YOU ORDER
Check fitment for your vehicle
Match the insert to your existing filter assembly before ordering.
View fitment detailsDelivery information · Returns & refunds
At a glance
- Replacement insert for a mushroom-style filter assembly.
- 200mm open-cell polyurethane foam construction.
- Refresh the foam element without buying a complete filter.
- Check your existing insert dimensions before ordering.
Product details
| Colour | Green |
|---|---|
| Product type | Replacement foam insert |
| Outside diameter | 200mm |
| Material | Open-cell polyurethane foam |
| Pack | 1 insert |
| Product code | 9R-R78E-833X |
This is a replacement insert, not a complete filter assembly. Confirm dimensions and fit before ordering.

Air filters
Mushroom filter foam insert · Blue
Amazon listing · Checked 21 October 2026 · One rating shared across all four colours
A blue replacement foam element for a compatible mushroom-style air filter.
Includes VAT at 20%
£2.99 Great Britain delivery
Secure checkout on PayPal. Delivery is £2.99 per order, in addition to the product price. Please check fitment before buying. For delivery outside the UK, contact us before ordering.
Ask about fitment or your order ↗BEFORE YOU ORDER
Check fitment for your vehicle
Match the insert to your existing filter assembly before ordering.
View fitment detailsAt a glance
- Replacement insert for a mushroom-style filter assembly.
- Foam construction.
- Refresh the foam element without buying a complete filter.
- Check your existing insert dimensions before ordering.
Product details
| Colour | Blue |
|---|---|
| Product type | Replacement foam insert |
| Product code | AO-IWV4-UDGV |
This is a replacement insert, not a complete filter assembly. Confirm dimensions and fit before ordering.

Air filters
Mushroom filter foam insert · Red
Amazon listing · Checked 21 October 2026 · One rating shared across all four colours
A red replacement foam element for a compatible mushroom-style air filter.
Includes VAT at 20%
£2.99 Great Britain delivery
Secure checkout on PayPal. Delivery is £2.99 per order, in addition to the product price. Please check fitment before buying. For delivery outside the UK, contact us before ordering.
Ask about fitment or your order ↗BEFORE YOU ORDER
Check fitment for your vehicle
Match the insert to your existing filter assembly before ordering.
View fitment detailsAt a glance
- Replacement insert for a mushroom-style filter assembly.
- Foam construction.
- Refresh the foam element without buying a complete filter.
- Check your existing insert dimensions before ordering.
Product details
| Colour | Red |
|---|---|
| Product type | Replacement foam insert |
| Product code | FG-R9RI-M19V |
This is a replacement insert, not a complete filter assembly. Confirm dimensions and fit before ordering.

Air filters
Mushroom filter foam insert · Yellow
Amazon listing · Checked 21 October 2026 · One rating shared across all four colours
A yellow replacement foam element for a compatible mushroom-style air filter.
Includes VAT at 20%
£2.99 Great Britain delivery
Secure checkout on PayPal. Delivery is £2.99 per order, in addition to the product price. Please check fitment before buying. For delivery outside the UK, contact us before ordering.
Ask about fitment or your order ↗BEFORE YOU ORDER
Check fitment for your vehicle
Match the insert to your existing filter assembly before ordering.
View fitment detailsAt a glance
- Replacement insert for a mushroom-style filter assembly.
- Foam construction.
- Refresh the foam element without buying a complete filter.
- Check your existing insert dimensions before ordering.
Product details
| Colour | Yellow |
|---|---|
| Product type | Replacement foam insert |
| Product code | PC-XFI3-4MOE |
This is a replacement insert, not a complete filter assembly. Confirm dimensions and fit before ordering.
Detail
Product details
Replacement foam inserts in green, blue, red and yellow. Select your colour and confirm the insert dimensions before ordering.
Features
Features
- Replacement foam media for a matching mushroom filter housing
- Choose green, blue, red or yellow on this page
- Match the insert diameter, thickness, centre opening and retaining arrangement
Delivery
Delivery information
Estimated delivery: 1–3 working days.
£2.99 Great Britain delivery per order.
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.
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.
