£88.70

K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: Performance, Premium, Washable: Flange Diameter: 3.5 In, Filter Height: 3.688 In, Flange Length: 1.375 In, Type: Round Straight, RU-9920

Red, RU-9920

Price data last checked 63 day(s) ago - refreshing...

View at Amazon

We'll watch every seller, every day. One email when your price arrives.

This is the most expensive it has ever been. Walk away.

£89 today · previous high £89 · all-time low £87

NEW HERE?

Amazon shows you one price. We show you all of them.

Tosheroon watches Amazon prices so you don't have to. Every product on Amazon has a price history — we make it visible. Set the price you'd actually pay, and we'll email you the second it gets there. No app, no account, one email.

WHAT'S ON THIS PAGE

↓ Price chart
when this has been cheap or pricey
↓ Forecast
where the price is heading next
↓ Statistics
all-time high & low, recent range
↑ Price alert
name your number, we'll email you

Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 28 days • 28 data points (No recent data available)

Historical
Generating forecast...
£88.70 £87.13 £87.47 £87.81 £88.16 £88.50 £88.84 13 March 2026 19 March 2026 26 March 2026 02 April 2026 09 April 2026

Price Distribution

Price distribution over 28 days • 3 price levels

Days at Price
Current Price
7 days 5 days 16 days · current 0 4 8 12 16 £87 £88 £89 Days at Price

Price Analysis

Most common price: £89 (16 days, 57.1%)

Price range: £87 - £89

Price levels: 3 different prices over 28 days

Key Features

ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%.

EASY INSTALLATION: Pre-oiled and built with simple clamp-on design. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.

SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters.

ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A K&N filter will last longer than 10 disposable filters.

WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants.

Product Specifications

Brand
K&N
Model
RU-9920
Colour
Red
Domain
Amazon UK
Release Date
30 January 2023
Listed Since
21 February 2023

Barcode

No barcode data available

Similar Products You Might Like

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.5 In, Filter Height: 4.531 In, Flange Length: 0.781 In, Type: Round Tapered, RU-9670
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.5 In, Filter Height: 4.531 In, Flange Length: 0.781 In, Type: Round Tapered, RU-9670

K&N

£67.25 03 Feb 2026
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: Performance, Premium, Washable: Flange Diameter: 6 In, Filter Height: 11.625 In, Flange Length: 1 In, Shape: Tapered Conical, RU-5064
99% match

K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: Performance, Premium, Washable: Flange Diameter: 6 In, Filter Height: 11.625 In, Flange Length: 1 In, Shape: Tapered Conical, RU-5064

K&N

£95.83 05 Feb 2026
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance, Premium, Washable: Flange Diameter: 3.5 In, Filter Height: 7 In, Flange Length: 1.75 In, Shape: Oval Tapered, RU-1033
99% match

K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance, Premium, Washable: Flange Diameter: 3.5 In, Filter Height: 7 In, Flange Length: 1.75 In, Shape: Oval Tapered, RU-1033

K&N

£86.43 03 Mar 2026
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance, Premium: Flange Diameter: 3.5 In, Filter Height: 6.5 In, Flange Length: 1.75 In, Shape: Round Tapered, RU-4630XD
99% match

K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance, Premium: Flange Diameter: 3.5 In, Filter Height: 6.5 In, Flange Length: 1.75 In, Shape: Round Tapered, RU-4630XD

K&N

£85.53 16 Feb 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 6.98 In, Filter Height: 8 In, Flange Length: 1 In, Shape: Oval Tapered, RU-5292
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 6.98 In, Filter Height: 8 In, Flange Length: 1 In, Shape: Oval Tapered, RU-5292

K&N

£104.16 04 Mar 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.875 In, Filter Height: 6 In, Flange Length: 0.625 In, Shape: Round, RU-1620
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.875 In, Filter Height: 6 In, Flange Length: 0.625 In, Shape: Round, RU-1620

K&N

£59.72 03 Feb 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 5 In, Filter Height: 8.75 In, Flange Length: 1 In, Shape: Round Tapered, RU-3107HBK
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 5 In, Filter Height: 8.75 In, Flange Length: 1 In, Shape: Round Tapered, RU-3107HBK

K&N

£83.23 04 Feb 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.25 In, Filter Height: 8 In, Flange Length: 1.625 In, Shape: Round Tapered, RU-5122
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.25 In, Filter Height: 8 In, Flange Length: 1.625 In, Shape: Round Tapered, RU-5122

K&N

£96.08 23 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.75 In, Filter Height: 5 In, Flange Length: 0.75 In, Shape: Round Tapered, RU-5284
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.75 In, Filter Height: 5 In, Flange Length: 0.75 In, Shape: Round Tapered, RU-5284

K&N

£60.83 07 Mar 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3 In, Filter Height: 6 In, Flange Length: 1.75 In, Shape: Tapered Round, RU-4650
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3 In, Filter Height: 6 In, Flange Length: 1.75 In, Shape: Tapered Round, RU-4650

K&N

£64.24 28 Jan 2026
K&N Universal X-Stream Clamp-On Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 2.4375 In, Filter Height: 6.5625 In, Flange Length: 2.9375 In, Shape: Round, RX-3800
99% match

K&N Universal X-Stream Clamp-On Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 2.4375 In, Filter Height: 6.5625 In, Flange Length: 2.9375 In, Shape: Round, RX-3800

K&N

£102.25 01 Apr 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.5 In, Filter Height: 3.188 In, Flange Length: 0.75 In, Shape: Round Tapered, RU-8100
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.5 In, Filter Height: 3.188 In, Flange Length: 0.75 In, Shape: Round Tapered, RU-8100

K&N

£51.94 11 Mar 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.5 In, Filter Height: 5.5 In, Flange Length: 0.75 In, Shape: Oval Tapered, RU-5040
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.5 In, Filter Height: 5.5 In, Flange Length: 0.75 In, Shape: Oval Tapered, RU-5040

K&N

£56.48 24 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.938 In, Filter Height: 4.438 In, Flange Length: 0.75 In, Shape: Tapered Conical, RU-5059
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.938 In, Filter Height: 4.438 In, Flange Length: 0.75 In, Shape: Tapered Conical, RU-5059

K&N

£99.86 23 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 5 In, Filter Height: 11.875 In, Flange Length: 1 In, Shape: Tapered Conical, RU-5065XD,Multi
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 5 In, Filter Height: 11.875 In, Flange Length: 1 In, Shape: Tapered Conical, RU-5065XD,Multi

K&N

£78.33 29 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 1.75 In, Filter Height: 2.75 In, Flange Length: 0.625 In, Shape: Oval Straight, RU-2454
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 1.75 In, Filter Height: 2.75 In, Flange Length: 0.625 In, Shape: Oval Straight, RU-2454

K&N

£53.87 10 Mar 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Filter: Flange Diameter: 3 In, Filter Height: 8.688 In, Flange Length: 0.938 In, Shape: Round Tapered, RX-3990-1
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Filter: Flange Diameter: 3 In, Filter Height: 8.688 In, Flange Length: 0.938 In, Shape: Round Tapered, RX-3990-1

K&N

£90.03 30 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 6 In, Filter Height: 7.5 In, Flange Length: 1 In, Shape: Round Tapered, RU-3101HBK
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 6 In, Filter Height: 7.5 In, Flange Length: 1 In, Shape: Round Tapered, RU-3101HBK

K&N

£85.77 04 Feb 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.75 In, Filter Height: 5 In, Flange Length: 0.625 In, Shape: Oval, RU-1500
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.75 In, Filter Height: 5 In, Flange Length: 0.625 In, Shape: Oval, RU-1500

K&N

£68.15 11 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 4.5 In, Filter Height: 3.25 In, Flange Length: 0.625 In, Shape: Round Tapered, RU-3110
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 4.5 In, Filter Height: 3.25 In, Flange Length: 0.625 In, Shape: Round Tapered, RU-3110

K&N

£71.67 29 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Filter: Flange Diameter: 3 In, Filter Height: 8 In, Flange Length: 1.75 In, Shape: Round Tapered, RC-5106
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Filter: Flange Diameter: 3 In, Filter Height: 8 In, Flange Length: 1.75 In, Shape: Round Tapered, RC-5106

K&N

£68.61 26 Feb 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.25 In, Filter Height: 4 In, Flange Length: 0.625 In, Shape: Round, RU-0600
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.25 In, Filter Height: 4 In, Flange Length: 0.625 In, Shape: Round, RU-0600

K&N

£60.24 11 Jan 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.75 In, Filter Height: 6 In, Flange Length: 2 In, Shape: Round, RU-3190
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.75 In, Filter Height: 6 In, Flange Length: 2 In, Shape: Round, RU-3190

K&N

£46.99 11 Feb 2026
K&N Universal Clamp-On Air Intake Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.125 In, Filter Height: 7 In, Flange Length: 1.75 In, Shape: Round Tapered, RU-5100
98% match

K&N Universal Clamp-On Air Intake Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.125 In, Filter Height: 7 In, Flange Length: 1.75 In, Shape: Round Tapered, RU-5100

K&N

£92.61 03 Mar 2026