K&N
K&N E-4370 High-Flow Original Lifetime Engine Air Filter - BRIGGS & STRATTON #393957
K&N E-4370 High-Flow Original Lifetime Engine Air Filter - BRIGGS & STRATTON #393957
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Estimated lead time 2-3 working days. Subject to availability.
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K&N Select Oil Filters have been specially designed for professional installers and service providers. Their high flow design can help to improve engine performance by reducing oil filter restriction. Our Select Oil Filters have a fluted canister shape so they can be removed with a traditional oil filter wrench commonly available to commercial installers. These Select Oil Filters provide outstanding filtration and engine protection throughout their service life. They are engineered to handle all grades of synthetic, conventional and blended motor oils. The pleated media provides high capacity making them suitable for extended oil change intervals when used in accordance with the vehicle and motor oil manufacturers recommendation. K&N Select Oil Filters are available for canister and cartridge type oil filter applications.
- Engineered to improve performance
- Designed for industrial applications
- High air flow with excellent filtration
- Washable and reusable air filter
- One year limited warranty
Air Filter Material | : | Cotton Gauze |
Height | : | 3.75 in (95 mm) |
Inner Wire | : | No |
Inside Diameter | : | 2 in (51 mm) |
Outside Diameter | : | 4.25 in (108 mm) |
Top Style | : | Open |
Top Material | : | None |
Air Filter Shape | : | Round |
Flanges | : | None |
Package Contents | : | 1 Air Filter |
Package Quantity | : | 1 |
Warranty | : | 1 Year Limited |
Washable | : | Yes |
Product Style | : | Round Air Filter |
Filter Re-Oiling Amount | : | 0.63 oz (19 ml) |
Filter Line | : | High-Flow |
Overall Filter Efficiency | : | Up To 99% Efficiency |
- 0 Briggs & Stratton 170400 7HP CARBRnd 4-1/4 In OD x 3-3/4 In H0 Briggs & Stratton 171400 7HP CARBRnd 4-1/4 In OD x 3-3/4 In H
- 0 Briggs & Stratton 220400 10 HPRnd 4-1/4 In OD x 3-3/4 In H0 Briggs & Stratton 221400 10HPRnd 4-1/4 In OD x 3-3/4 In H
- 0 Briggs & Stratton 222400 10HPRnd 4-1/4 In OD x 3-3/4 In H0 Briggs & Stratton 233400 9HPRnd 4-1/4 In OD x 3-3/4 In H
- 0 Briggs & Stratton 243400 10HPRnd 4-1/4 In OD x 3-3/4 In H0 Briggs & Stratton 254400-254499 11HPRnd 4-1/4 In OD x 3-3/4 In H
- 0 Briggs & Stratton 290400 CARBEng 18HP0 Briggs & Stratton 294400 CARBEng 18HP
- 0 Briggs & Stratton 302400 CARB12HP0 Briggs & Stratton 326400 CARB12HP
Feel free to contact us at support@ducocarparts.co.uk should you wish to double check!
Before sending out your ordered part(s), we perform a compatibility check to guarantee that they will fit your vehicle. This verification can be done by using your registration number (UK) or the last 7 digits of your VIN. Kindly provide your car information before proceeding to checkout.
K&N-E-4370
Manufactured by
K&N Engineering

