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K&N KN-141

A 38 × 46 mm cartridge oil filter for eight named marques, supplied with an O-ring already greased for fitting, compatible with the latest synthetic oils.

K&N KN-141 red cartridge oil filter

K&N KN-141

A 38 × 46 mm cartridge oil filter for eight named marques, supplied with an O-ring already greased for fitting, compatible with the latest synthetic oils.

Dimensions
38 × 46 mm cartridge (from the title)
Type
Cartridge — it fits inside a housing, unlike a spin-on filter
O-ring
Supplied pre-greased for fitting (maker’s bullet)
Stated fitment
Beta, Yamaha, Fantic, HM Moto, MBK, TM, Rieju, Gas Gas (from the title)
Oil compatibility
Compatible with the latest synthetic engine oils (maker’s bullet)
Model list
In the product description rather than the bullets (maker’s bullet)
Amazon reference
B000E28N5I (one reference across 6 Amazon marketplaces)
EAN
0024844099938
  • A pre-greased O-ring, which is the part people fit dry and then leak from
  • Eight marques named in the title
  • A cartridge needs the housing opened, which is a different job from a spin-on

Best for: Off-road and small-capacity machines with a cartridge filter housing.

≈ $12 / £9 / €8
Check price on Amazon

Specifications

Dimensions
38 × 46 mm cartridge (from the title)
Type
Cartridge — it fits inside a housing, unlike a spin-on filter
O-ring
Supplied pre-greased for fitting (maker’s bullet)
Stated fitment
Beta, Yamaha, Fantic, HM Moto, MBK, TM, Rieju, Gas Gas (from the title)
Oil compatibility
Compatible with the latest synthetic engine oils (maker’s bullet)
Model list
In the product description rather than the bullets (maker’s bullet)
Amazon reference
B000E28N5I (one reference across 6 Amazon marketplaces)
EAN
0024844099938

What the seller commits to paper

A 38 × 46 mm cartridge for Beta, Yamaha, Fantic, HM Moto, MBK, TM, Rieju and Gas Gas. An O-ring supplied pre-greased for quick fitting. Compatibility with the latest synthetic engine oils. The detailed model list in the product description.

The O-ring detail

When a cartridge housing closes onto a dry O-ring, the ring can twist or pinch in its groove. It seats badly, and oil comes out under pressure the moment the engine runs.

Greasing it first is the step every manual mentions and half the people doing the job forget. Arriving already greased is a small kindness that prevents a specific failure.

Cartridge, not spin-on

Three filters in this family are spin-on cans. This is an element that sits inside a housing bolted to the engine, which is why its dimensions are the fitment rather than a description — a cartridge either fits the housing or it does not.

What the dimensions do and do not settle

38 × 46 mm is the element. Whether it is your element is a question for the model list, and the list is in the description rather than in the bullets.

Availability

Between 8 € and 10 € across the German, French, Italian and Spanish Amazon stores, in the single reading behind this page.

Priced in local currency, which the euro range above deliberately leaves out, it also appears on the American and British Amazon stores.

What Keepa returned in the single reading behind this page. Availability and prices move without notice.

Prices quoted in this text were read on 18 September 2026. The live price is at the top of the page.

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