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The K&N KN-138 oil filter is a premium, high-flow replacement filter designed for a wide range of adventure, dualsport, and street motorcycles. Built for performance, durability, and compatibility with all types of motor oils, this filter is trusted by riders worldwide. Whether you're riding a Suzuki V-Strom or an Aprilia Tuareg 660, the KN-138 delivers protection and convenience with its easy-to-remove 17mm nut and heavy-duty canister.
Compatible with synthetic, conventional, and blended oils, the KN-138 features pleated synthetic-blend media for excellent filtration and flow — ideal for bikes that demand high performance in tough conditions.
If you’re unsure if the KN-138 fits your bike, contact us and we’ll help you confirm fitment.
Type | Spin-On Oil Filter |
Thread Size | M20 x 1.0 |
Height | 3.031 in (77 mm) |
Outside Diameter | 2.813 in (71 mm) |
Removal Nut | 17mm Hex, Welded |
Bypass Valve | Yes |
Anti-Drain Back Valve | Yes |
Filter Media | Premium Synthetic Blend |
Gasket Material | Nitrile Rubber |
Weight | 0.6 lb (0.3 kg) |
Warranty | 1-Year Limited (K&N) |
Q: What motorcycles use the K&N KN-138 oil filter?
A: This filter fits a variety of bikes including the Suzuki V-Strom 650, 800, 1000, 1050, and Aprilia Tuareg 660. See our fitment guide above for full compatibility.
Q: Can I use synthetic oil with this filter?
A: Yes, the KN-138 is engineered to work with all oil types including synthetic, conventional, and blended formulations.
Q: Does this filter come with a warranty?
A: Yes, it is covered by K&N’s 1-Year Limited Warranty.
TMBR MOTO is your trusted source for high-quality parts and accessories for adventure, dualsport, and enduro motorcycles. All products ship fast from the U.S., and we’re here to support your build or service every step of the way.
If you have any questions or need help finding what you need for your motorcycle or your next adventure please reach out:
EMAIL US OR CALL 208-254-2044