


K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5The K&N 57S 4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S 4000 Performance Airbox comes with an
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.7 ★★★★★
Based on 1920 reviews
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Product Reviews
★★★★★ 2
Won't last long
Color: Green
It lasted a couple weeks before my dog got it apart at the seams and had the stuffing all over the house. Won't hold up for long under aggressive play. I was going to return it, but my dog so loved this that I stuffed a sock in it and sewed it back together with heavier thread and more stitches. Hold up better for toys of the same price. Buy one, and have a sewing kit handy.
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Reviewed in the United States on April 17, 2026
★★★★★ 4
Withstands rough play
Color: Green
It’s sturdy and has withstood my cairn puppies chewing. It’s Long enough length for a good game of tug. One squeaker, which doesn’t much excite them. Pups tend to choose other toys over this, but will engage if I present it to them.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
My dog LOVES these balls
Awesome balls! Soft, squishy, and dog can get their teeth into them but they don’t get damaged. My dog absolutely loves them!
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Reviewed in the United States on January 6, 2026
★★★★★ 5
Durable.
These are great for my 13 lb Schnauzer. Just the right size to keep him occupied! He loves chasing after them when we play catch. They’ve held up well to his sharp teeth.
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Reviewed in the United States on July 21, 2025
★★★★★ 5
Nice design
These balls are wonderful, easy to throw and my puppy can hold on to them
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Reviewed in the United States on November 23, 2025