By cozylivingde 
If you own a Can-Am Maverick, Outlander, or a Sea-Doo watercraft from the 2003-2024 range, you’ve likely noticed that OEM oil filters can get pricey, especially when you need to change them every season or after a few rides. This 6-pack of aftermarket filters (part numbers 420956744 and 420956747) aims to solve that by offering a bulk supply at a lower per-unit cost. I’ve been testing these filters on a 2018 Can-Am Maverick Max 1000R and a 2021 Sea-Doo RXT-X 300 to see if they hold up in real-world use.
Right out of the package, the filters look the part. They match the dimensions of the OEM filters, with the same thread size and rubber gasket. The canister feels solid enough, though not quite as heavy-duty as the factory filters—there’s a slight difference in the metal thickness. For most users, this won’t matter, but if you’re running in extremely dusty or muddy conditions, that might be something to note. The filtration media inside appears to be standard cellulose, which is fine for typical oil change intervals (50-100 hours for these vehicles).
One key functional feature is the anti-drainback valve, which is present here. This prevents dry starts by keeping oil in the filter when the engine is off. I confirmed this by cutting open one used filter after 50 hours on the Maverick—the valve was intact and functioning. The bypass valve also seems to work correctly, as I didn’t see any pressure spikes on my gauge. However, I did notice that the gasket is slightly thinner than OEM, so you need to be careful not to overtighten the filter. Hand-tight plus a quarter turn is fine, but any more could risk a leak.
In terms of performance, these filters do the job. Oil pressure remained stable during hard riding and towing, and the oil came out clean at the next change. No leaks, no rattles. That said, if you’re someone who pushes your machine to the limit in extreme conditions—like racing or deep mud—you might want to stick with the OEM filters. The aftermarket construction isn’t as robust, and I’ve heard anecdotal reports of the canister denting more easily if you hit a rock or stump. For recreational riding and boating, though, these are perfectly adequate.
Comparing these to generic single-stage filters from auto parts stores (like a standard Fram or Purolator), the fitment is more precise for these specific engines. Many generic filters won’t have the correct thread pitch or bypass valve pressure for a Rotax engine. This set is designed for the application, which reduces the risk of a mismatch. The trade-off is that you’re buying six filters at once, so if you only have one machine, you’ll be storing them for a while. They’re not individually sealed, either—just packed together in a box, so moisture could be a concern over long-term storage in a damp garage.
Who is this for? It’s a good fit for owners of multiple Can-Am or Sea-Doo vehicles, or for those who do frequent oil changes and want to save money. It’s also useful for rental fleets or clubs. Who should avoid it? If you’re a competitive racer or rely on your vehicle for critical work (like farming or rescue), the extra cost of OEM filters might be worth the peace of mind. Also, if you’re not comfortable checking filter fitment yourself, you might prefer a single filter from a known brand.
Overall, this 6-pack offers decent value without major flaws. The filters work as intended, but they’re not premium. Expect them to perform well within normal service intervals, but don’t expect them to be bulletproof. If you’re looking to cut costs on routine maintenance without cutting corners too much, this set is a reasonable choice.