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K&N 33-2787 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   6 Customer Reviews
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®
The K&N 33-2787 Air Filter fits some Holden Astra, Holden Astra AH, Holden Astra TS, London Taxi TX4, Opel Astra G, Opel Astra H, Opel Speedster, Opel Zafira, Opel Zafira A, Opel Zafira B, Opel Zafira II, Saturn Astra, Vauxhall Astra Mk4, Vauxhall Astra MK5, Vauxhall VX220, Vauxhall Zafira, and Vauxhall Zafira MK2 models. See vehicle applications link for details.
K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapePanel
Filter MaterialCotton Gauze
Height1.188 in (30 mm)
Outside Length11.438 in (291 mm)
Outside Width9.125 in (232 mm)
Package Contents1 Air Filter
Package Quantity1
Product StylePanel Air Filter
Weight1.5 lb (0.7 kg)
Filter Re-Oiling Amount1.69 oz (50 ml)
Product Box Height11.56 in (294 mm)
Product Box Length10.44 in (265 mm)
Product Box Width1.75 in (44 mm)

K&N 33-2787 Air Filter Product Reviews

Thursday, November 2, 2017 - Part 33-2787
This is the first time I tried a K&N filter and I can say that improved a lot. Arrived very quick, very well packed and I will definitely buy more K&N products.

Sergio Herrero
Aberdeen, United Kingdom
Monday, October 16, 2017 - Part 33-2787
My car had a slight hesitation on initial acceleration, especially when cold, now completely cured by this filter. Seriously this is a FANTASTIC PRODUCT.

Andrew Smith
Redditch, United Kingdom
Monday, August 28, 2017 - Part 33-2787
Good quality item, fast delivery. Would recommed.

Phillip Taylor
Brackley, United Kingdom
Monday, January 2, 2017 - Part 33-2787
As usual, improved performance by around 8 and fuel economy. Fitted to my Astra H 1.6 vvt with a lpg system fitted. I don't fit cone filters, but K&N replacement filters into existing airbox. My BMW Z3 2.8 has had one fitted for 2 years now and breaths very freely.

Dave Pitches
Mablethorpe Lincs, United Kingdom
Monday, August 24, 2015 - Part 33-2787
Good product, would definitely recommend it and use this product again.

Lee Roberts
London, England
Thursday, June 7, 2012 - Part 33-2787
Have a 2.0 turbo diesel Zafira, poped in KN panel filter (33-2787) and felt difference straight away. The engine can now breathe so it is more responsive, as a guess as to power gain from this filter I would put at 3-4 hp.

Essex, United Kingdom