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Engine air filters with a 79mm (3.125 inch) inner diameter (ID) are
typically high-performance, clamp-on style filters designed for carburetors or intake systems
. Key options include the washable cotton gauze
K&N RU-3250
(79mm flange, 152mm base) and
K&N E-2996
(4.25" height).
Common 79mm ID Filter Options:
- K&N RU-3250: Universal clamp-on, 79mm (3.125") flange, 6" height, 5" base OD.
- K&N RC-9160: Tapered conical design, 79mm flange.
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K&N RC-9160 Universal Air Filter 79mm Flange Diameter ...
eBay
https://www.ebay.com
› ... › Air Filters
eBay
https://www.ebay.com
› ... › Air Filters
Flange Inside Diameter, 3.125 in (79 mm
) ; Air Filter Shape, Round Tapered ; Top Material, Rubber ; Top Style, Rubber ; Top Outside Diameter, 3.5 in (89 mm).
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$64.99
Out of stock
Air Filter Element Replaces Ingersoll Rand 88171913 - Holm
holmfilters.com
https://holmfilters.com
› product › a20-0374-hol
holmfilters.com
https://holmfilters.com
› product › a20-0374-hol
Superior grade commercial Air Filter Element that can fit construction machinery and equipment.
Height 79mm
; Outer diameter 100mm; Inner diameter 67mm.
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£15.82
In stock
45-day returns
ITG Air Filters JC60/77/125C Maxogen Air Filter
Euro Sport Accessories
https://www.eurosportacc.com
› itg-filters › products
Euro Sport Accessories
https://www.eurosportacc.com
› itg-filters › products
ITG Maxogen
filters
feature the Trifoam System, a high-quality 3 layer reticulated polyester foam
element
construction.
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$98.95
In stock
30-day returns
Air Filter Element - Quality Scooter Parts
Quality Scooter Parts
https://qualityscooterparts.com
› scooter-air-filter-elemen...
Quality Scooter Parts
https://qualityscooterparts.com
› scooter-air-filter-elemen...
Scooter Air Filter Element | Fits: 125cc and 150cc GY6 engine. Air ... Outer Diameter: 123mm. Top Hole Inner Diameter: 45mm.
Bottom Hole Inner Diameter: 79mm
...
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$16.49
In stock
30-day returns
K&N HA-5221 Replacement Air Filter
K&N Filters
https://www.knfilters.com
› ha-5221-replacement-air-filter
K&N Filters
https://www.knfilters.com
› ha-5221-replacement-air-filter
Air Filter Material, Cotton Gauze ; Inner Wire, No ;
Inside Diameter, 3.125 in (79 mm
) ; Outside Diameter, 5.125 in (130 mm) ; Top Style, Rubber.
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$59.19
Out of stock
People also ask
Do air filters have to be the exact size?
Absolutely, the size of your air filter matters
! Your air filter must fit correctly into your HVAC system for it to function efficiently.
Standard and Common Air Filter Sizes Chart for Home HVAC and Furnaces
Filterbuy.com
https://filterbuy.com
› resources › air-filter-basics › air-fi...
Filterbuy.com
https://filterbuy.com
› resources › air-filter-basics › air-fi...
What is the difference between air filter and air filter element?
Air Cleaner Element Is A Fancy Term For An Engine Air Filter
Technically, the term "air cleaner element" pertains only to the filter material. The material may be cotton, paper, a synthetic material, or foam. The term "engine air filter" pertains to the entire part.
Technically, the term "air cleaner element" pertains only to the filter material. The material may be cotton, paper, a synthetic material, or foam. The term "engine air filter" pertains to the entire part.
What Is The Difference Between An Air Filter And An Element?
Olathe Toyota Parts Center
https://parts.olathetoyota.com
› blog › difference-betwee...
Olathe Toyota Parts Center
https://parts.olathetoyota.com
› blog › difference-betwee...
Are engine air filters standard size?
Filters come in different sizes and shapes, and are specific to certain vehicles, so one size doesn't fit all
. Most are rectangular, but some are cylindrical or round, and they're generally built into a plastic or rubber frame.
Oct 24, 2025
Engine Air Filters: A Complete Guide - CARFAX
CARFAX
https://www.carfax.com
› maintenance › engine-air-filters
CARFAX
https://www.carfax.com
› maintenance › engine-air-filters
How do I tell what size air filter I need?
The easiest method:
Remove your current filter and check the printed nominal size on the frame
—this is the size you need to order. If no size is printed: Measure the filter's length, width, and depth in inches using a tape measure. Round up to the nearest whole number for each dimension.
How to Measure Your Air Filter: Complete Step-by-Step Guide
Filterbuy.com
https://filterbuy.com
› resources › air-filter-basics › meas...
Filterbuy.com
https://filterbuy.com
› resources › air-filter-basics › meas...
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Professional Engine air filter element 79mm inner diameter ...
sglfilters.com
https://www.sglfilters.com
› tag › engine-air-filter-elem...
sglfilters.com
https://www.sglfilters.com
› tag › engine-air-filter-elem...
With a durable structure and precise dimensions, it
effectively captures dust, dirt, and airborne particles
, ensuring clean airflow into the combustion chamber.
K + N Air Filter CLMP ON 79MM - RC-3250
Cotter Motorcycles
https://www.cottermc.com
› k-n-air-filter-clmp-on-79m...
Cotter Motorcycles
https://www.cottermc.com
› k-n-air-filter-clmp-on-79m...
Match the outer diameter (o.d.) of your carb throat with the
inner diameter (i.d.) of the filter
(given in inches and millimeters). More Information. More ...
Read more
€77.11
K-N Air Filter
JEGS High Performance
https://www.jegs.com
› vpt › Air+Filter
JEGS High Performance
https://www.jegs.com
› vpt › Air+Filter
...
Air Filter Flange Inside Dia. 3.500 in
. (89 mm) Rubber Top · $62.99. Ships Today. Lowest Price Guarantee · Oval Tapered Universal Clamp-On Air Filter; Flange ...
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Air Filter Element Replaces Hatz 50426000 | Holm
holmfilters.com
https://holmfilters.com
› product › a20-0025-hol
holmfilters.com
https://holmfilters.com
› product › a20-0025-hol
Superior grade commercial
Air Filter Element
that can fit construction machinery and equipment. Length
79mm
; Outer
diameter
114mm;
Inner diameter
6mm.
K&N Universal Conical Air Filter 79 mm connection, 152 ...
Amazon.com.be
https://www.amazon.com.be
› Universal-Conical-Filter-...
Amazon.com.be
https://www.amazon.com.be
› Universal-Conical-Filter-...
K&N Universal Conical Air Filter 79 mm connection
, 152 mm base, 127 mm top, 178 mm height (RU-5100) : Amazon.com.be: Automotive.
€90.49
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