4 inch air filter
Skip it50/100a small market ($89K/yr) — 4 inch air filter doesn't clear our bar today.
Market/yr
$89K
Growth (1y)
+171.4%
Products
38
Brands
19
was 18 a year ago
Sellers
79
Price range
$9.57–$65.39
Returns
2.0%
Rating
4.5★
Skip it
Scored 50/100 across market size, growth, competition, quality gap, and returns.
Demand
Weekly Amazon search volume, last 104 weeks — +171.4% year over year.Seasonality
Monthly demand index across the year — 1.00 is average.No pronounced peak months · busiest ÷ quietest = 1.5×
Competition
- K&N39%
- RYANSTAR RACING17%
- muge racing5%
- MIADILA5%
- TIEVISHO4%
- Filtrete4%
- Other (13 brands)26%
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them. 19 brands and 79 sellers compete here.
Brands
19 rising
was 18 a year ago
Sellers
79
Top 5 brand share
70%
BLUE 4 102 mm Inlet Truck Air Cone Replacement Performance Washable Clamp-On Dry Air Filter (8 Tall)Product shelf
All 38 tracked products in this niche.
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance Premium: Flange Diameter: 4 In Filter Height: 5.5 In Flange Length: 1.125 In Shape: Round Tapered RG-1001RD
K&N
$35.244.6★5,136 reviews
RYANSTAR RACING 102mm 4 High Flow Round Tapered Cone Cool Air Filter Cleaner with Top Filter Design Short 231mm tall
RYANSTAR RACING
$20.584.5★783 reviews
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance Premium Washable: Flange Diameter: 4 In Filter Height: 6 In Flange Length: 1.75 In Shape: Round Tapered RE-0850
K&N
$56.734.6★254 reviews
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance Premium Washable: Flange Diameter: 4 In Filter Height: 9 In Flange Length: 1.75 In Shape: Round Tapered RE-0870
K&N
$65.394.8★589 reviews
3 3.5 4 Inch Cold Air Intake Filter 76mm 89mm 101mm High Performance Washable 3 Sizes in 1 Clamp-On Replacement Cone Air Filter Black
TIEVISHO
$27.824.4★85 reviews
RYANSTAR Universal Clamp-on Air Intake Filter 3 In /3.5 In /4 In Three different Sizes Round Tapered High Performance Washable Replacement Air Filter For cars and motorcycles (black)
RYANSTAR RACING
$15.934.4★666 reviews
K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance Premium Washable: Flange Diameter: 4 In Filter Height: 3.5 In Flange Length: 0.625 In Shape: Round Tapered RU-2510
K&N
$48.284.7★277 reviews
Red 4 100mm Inlet Cone Replacement Dry Air Filter High Flow Car Performance Cold Air Intake Filter
WOOTON
$19.684.6★195 reviews
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality product,fast shipping,and honestly way better then I expected for the cost”
“Strong filter”
“Good fit as expected”
“Good price”
“Worked as advertised”
“Easy to install”
“Sturdy”
“they work great in my HVAC”
“Easy”
“Eliminates even the dankiest odors”
What buyers complain about
“DOES NOT FIT”
“Filter size too larger”
“Quality control is not the best. for a brand name”
“False advertising”
“Does not fit Honeywell filter holder”
“for $10 less per filter”
“the thickness turned out to be the problem”
“Not very well built”
“Flow is low”
“The last one I bought is not working at all”
Top return reasons
- Size-Overall72%
- Filtration10%
- Compatibility-Overall8%
- Value For Money4%
- Advertised Vs Actual Product2%
- Functionality-Overall1%
- Thickness1%
- Defective Material/Parts1%
- Product Condition0%
- Width0%