£73.00

This is the usual price. Wait for it to drop, or tell us your number.

£73 today · usual range £67–£80 · best ever £67

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.4375 In, Filter Height: 7 In, Flange Length: 1.25 In, Shape: Oval, RU-1390

Amazon

Price History & Forecast

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

Last 42 days · 42 data points (no recent data)

Historical
Generating forecast…
£80.05 £65.42 £68.61 £71.80 £75.00 £78.19 £81.38 23 July 2026 02 August 2026 12 August 2026 22 August 2026 02 September 2026
View at Amazon ↗

RU-1390

Price data last checked 49 day(s) ago - refreshing...

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 Distribution

Price distribution over 42 days • 4 price levels

Days at Price
Current Price
1 day 24 days 6 days · current 11 days 0 6 12 18 24 £67 £68 £73 £80 Days at Price

Price Analysis

Most common price: £68 (24 days, 57.1%)

Price range: £67 - £80

Price levels: 4 different prices over 42 days

Description

K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16" (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

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.

LOW-MAINTENANCE DESIGN: 50,000 miles before your first cleaning under normal highway driving conditions.

HIGH QUALITY: Made in America.

RACE TESTED: The Official Air Filter of NASCAR. Trusted on the racetrack—made for your vehicle.

Product Specifications

Brand
K&N
Model
RU-1390
Domain
Amazon UK
Release Date
14 October 2015
Listed Since
07 August 2012

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: 2.5 In, Filter Height: 5.75 In, Flange Length: 1.5 In, Shape: Round Tapered, RU-5005
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.5 In, Filter Height: 5.75 In, Flange Length: 1.5 In, Shape: Round Tapered, RU-5005

K&N

£90.25 23 Aug 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.5 In, Filter Height: 7 In, Flange Length: 1.75 In, Shape: Oval Straight, RF-1033
99% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3.5 In, Filter Height: 7 In, Flange Length: 1.75 In, Shape: Oval Straight, RF-1033

K&N

£81.52 22 Aug 2026
K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3011
98% match

K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3011

K&N

£51.41 02 Sep 2026
K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3978XD
98% match

K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3978XD

K&N

£64.82 13 Aug 2026
K&N Universal Air Filter - Carbon Fiber Top and Base: High Performance, Premium, Washable, Replacement Engine Filter: Filter Height: 5.75 In, Flange Length: 1 In, Shape: Oval Straight, RP-5105
98% match

K&N Universal Air Filter - Carbon Fiber Top and Base: High Performance, Premium, Washable, Replacement Engine Filter: Filter Height: 5.75 In, Flange Length: 1 In, Shape: Oval Straight, RP-5105

K&N

£188.79 20 Aug 2026
K&N Universal Air Filter - Carbon Fiber Top and Base: High Performance, Premium, Washable, Replacement Engine Filter: Filter Height: 4.625 In, Flange Length: 2 In, Shape: Oval Straight, RP-5161
98% match

K&N Universal Air Filter - Carbon Fiber Top and Base: High Performance, Premium, Washable, Replacement Engine Filter: Filter Height: 4.625 In, Flange Length: 2 In, Shape: Oval Straight, RP-5161

K&N

£270.50 08 Sep 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 3.5 In, Filter Height: 3 In, Flange Length: 0.625 In, Shape: Round, RU-1790
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 3.5 In, Filter Height: 3 In, Flange Length: 0.625 In, Shape: Round, RU-1790

K&N

£63.51 05 Oct 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Filter Height: 5.5 In, Flange Length: 0.875 In, Shape: Oval Tapered, RC-5050
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Filter Height: 5.5 In, Flange Length: 0.875 In, Shape: Oval Tapered, RC-5050

K&N

£77.07 21 Aug 2026
K&N X-Stream Top Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Shape: Round, 66-3120
98% match

K&N X-Stream Top Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Shape: Round, 66-3120

K&N

£275.60 26 Aug 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.5 In, Filter Height: 4 In, Flange Length: 1 In, Shape: Round, RB-0700
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.5 In, Filter Height: 4 In, Flange Length: 1 In, Shape: Round, RB-0700

K&N

£59.87 17 Sep 2026
K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3551
98% match

K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3551

K&N

£65.50 05 Sep 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.125 In, Filter Height: 5 In, Flange Length: 0.625 In, Shape: Oval Straight, RU-2754
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 2.125 In, Filter Height: 5 In, Flange Length: 0.625 In, Shape: Oval Straight, RU-2754

K&N

£91.67 26 Sep 2026
K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3690
98% match

K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3690

K&N

£84.94 14 Aug 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.4375 In, Filter Height: 5 In, Flange Length: 0.625 In, Shape: Round, RU-0810
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 2.4375 In, Filter Height: 5 In, Flange Length: 0.625 In, Shape: Round, RU-0810

K&N

£50.39 11 Sep 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 4 In, Filter Height: 6 In, Flange Length: 0 625 In, Shape: Round Tapered, RU-5141
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 4 In, Filter Height: 6 In, Flange Length: 0 625 In, Shape: Round Tapered, RU-5141

K&N

£66.71 10 Sep 2026
K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3530
98% match

K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-3530

K&N

£79.75 12 Aug 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-0630
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-0630

K&N

£50.59 14 Oct 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 3.5 In, Filter Height: 8.5 In, Flange Length: 0.625 In, Shape: Round, RU-1785
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 3.5 In, Filter Height: 8.5 In, Flange Length: 0.625 In, Shape: Round, RU-1785

K&N

£85.97 15 Aug 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3 In, Filter Height: 5 In, Flange Length: 1.75 In, Shape: Round Tapered, RU-5176
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 3 In, Filter Height: 5 In, Flange Length: 1.75 In, Shape: Round Tapered, RU-5176

K&N

£88.90 29 Sep 2026
K&N Universal Air Filter - Carbon Fiber Top: High Performance, Premium, Replacement Filter: Flange Diameter: 4.25 In, Filter Height: 6.75 In, Flange Length: 0.625 In, Shape: Round, RP-5167
98% match

K&N Universal Air Filter - Carbon Fiber Top: High Performance, Premium, Replacement Filter: Flange Diameter: 4.25 In, Filter Height: 6.75 In, Flange Length: 0.625 In, Shape: Round, RP-5167

K&N

£120.83 26 Sep 2026
K&N Universal Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 3.875 In, Filter Height: 6 In, Flange Length: 0.9375 In, Shape: Oval Straight, RP-5070
98% match

K&N Universal Air Filter: High Performance, Premium, Replacement Engine Filter: Flange Diameter: 3.875 In, Filter Height: 6 In, Flange Length: 0.9375 In, Shape: Oval Straight, RP-5070

K&N

£196.39 23 Aug 2026
K&N Universal Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 3.875 In, Filter Height: 7 In, Flange Length: 0.9375 In, Shape: Oval Straight, RP-5103
98% match

K&N Universal Air Filter: High Performance, Premium, Replacement Filter: Flange Diameter: 3.875 In, Filter Height: 7 In, Flange Length: 0.9375 In, Shape: Oval Straight, RP-5103

K&N

£195.65 21 Aug 2026
K&N X-Stream Top Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Shape: Round Tapered, 66-3300R
98% match

K&N X-Stream Top Air Filter: High Performance, Premium, Washable, Replacement Engine Filter: Shape: Round Tapered, 66-3300R

K&N

£243.01 28 Aug 2026
K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 1.875 In, Filter Height: 3 In, Flange Length: 0.625 In, Shape: Round Tapered, RC-1090
98% match

K&N Universal Clamp-On Air Filter: High Performance, Premium, Washable, Replacement Filter: Flange Diameter: 1.875 In, Filter Height: 3 In, Flange Length: 0.625 In, Shape: Round Tapered, RC-1090

K&N

£50.39 08 Sep 2026