A Harley oil change kit bundles the oil filter, crush washer, and sometimes oil into one package sized for your specific model

Harley-Davidson sells factory oil change kits that match the engine size and year of your bike. The kit typically includes a new oil filter cartridge (the part that screws into the filter housing), a crush washer or O-ring for the drain plug, and sometimes a quart or two of Harley's own synthetic blend or full synthetic oil. Some kits skip the oil and sell filter and washer only, so check the product description before ordering.

The appeal is simplicity: you get the right parts together, sized for your engine. A 2023 Street 750 needs different filtration than a 2020 Road Glide, and the kit accounts for that. You avoid buying a filter that doesn't fit or a crush washer in the wrong size. The tradeoff is cost — a factory kit runs higher than buying each part separately from an aftermarket supplier.

Key Takeaways

  • Harley oil change kits include the filter cartridge, crush washer, and sometimes oil, all matched to your specific model year and engine size.
  • The crush washer is a one-time-use part that seals the drain plug; reusing it can cause slow leaks, so the kit's inclusion saves a trip back to the parts counter.
  • Factory kits cost more per component than buying parts separately, but eliminate guesswork about fitment and part compatibility.
  • You will still need to source your own oil if the kit does not include it, and you must verify the correct oil weight and type for your model before ordering.

What's actually in the box

A typical Harley oil change kit contains three items. The oil filter cartridge is a cylindrical element that threads into the filter housing on top of the engine; it traps metal particles and debris as oil circulates. The crush washer (also called a sealing washer) is a soft aluminum ring that goes under the drain plug bolt; when you tighten the bolt, the washer compresses and creates a seal. Once removed, it cannot be reused — tightening it again will not seal, and you risk oil seeping out.

Some kits include oil; others do not. If oil is included, it is usually one or two quarts of Harley's synthetic blend or full synthetic formula. Check your owner's manual for the correct weight (typically 20W-50 for most cruisers, though some models use 10W-40). If the kit does not include oil, you will need to buy it separately. Do not assume all Harley engines use the same weight.

A few kits also include a small tube of gasket sealant or a new O-ring for the filter housing cap, though this varies by model and kit version. Read the product listing to confirm what you are ordering.

How to identify the right kit for your bike

Harley kits are organized by model year and engine family. A 2022 Street 750 uses a different filter than a 2022 Street Glide, even though both are 2022 models. The easiest way to find the correct kit is to enter your VIN or model year and engine size into the Harley-Davidson parts catalog on their website, or call a Harley dealer and give them your bike's year and model.

If you order from a third-party retailer like J&P Cycles or Revzilla, filter the results by your model year first, then engine size. The product page should list which models the kit fits. Do not assume a kit labeled "Harley oil change" fits all Harley engines — it does not.

Keep your owner's manual handy when ordering. It lists the correct filter part number and oil weight for your specific bike. If you cannot find your manual, the Harley website has PDFs for most models, searchable by year.

Factory kits versus buying parts separately

A factory Harley oil change kit typically costs between $35 and $65, depending on whether oil is included and which model you ride. Buying the filter, crush washer, and oil separately from an aftermarket supplier often costs $5 to $15 less. The savings come from buying generic parts rather than Harley-branded packaging.

The trade-off is certainty. A factory kit guarantees all three components fit your bike and work together. If you buy parts separately, you must verify the filter thread size, the crush washer diameter, and the oil weight yourself. One wrong choice means a trip back to the parts counter or a leaking drain plug.

For riders doing their first oil change or uncomfortable with part compatibility, the factory kit removes that friction. For experienced riders or those changing oil on multiple bikes, buying parts separately and stocking common sizes often makes sense.

Oil weight and type matter more than the kit brand

The most common mistake is using the wrong oil weight. Harley engines are air-cooled and run hotter than liquid-cooled bikes; they typically need heavier oil. Most cruisers use 20W-50, but some models use 10W-40, and a few older bikes use straight 50-weight. Using 10W-30 (common in cars) will thin out too much at operating temperature and leave your engine under-protected.

Harley recommends synthetic blend or full synthetic oil for most modern models. Synthetic oil lasts longer between changes (typically 10,000 miles for Harley synthetic versus 5,000 for conventional) and flows better in cold weather. If your manual says "synthetic recommended" or "synthetic required," follow that guidance. Mixing synthetic and conventional is safe but defeats the benefit of synthetic's longer drain interval.

If the factory kit includes oil, it will be the correct weight and type for your model. If you are buying oil separately, check your owner's manual first, then verify the oil meets Harley's specifications before pouring it in.

When to replace the crush washer and filter together

Change the oil filter and crush washer at the same interval — usually every oil change. The crush washer is a one-time seal; once you remove the drain plug, the washer is spent. Reusing it risks a slow leak that drips oil onto your exhaust and creates a fire hazard. The filter traps particles over time and loses efficiency, so replacing both together keeps your engine clean and sealed.

Some riders stretch filter changes to every other oil change on older bikes with low mileage, but this is not recommended for modern Harleys. The cost of a filter and washer is small compared to engine damage from a leak or clogged filter. If your manual specifies a drain interval, follow it.

Frequently Asked Questions

Can I use a non-Harley filter if I buy the crush washer separately?

Yes. Many aftermarket filters (Fram, K&N, Mobil 1) fit Harley engines and work well. The key is matching the thread size and cartridge diameter to your filter housing. Verify the part number against your owner's manual or call a dealer to confirm fitment. The crush washer is universal as long as you get the correct diameter for your drain plug.

What if I lose the crush washer that came with my kit?

Buy a replacement before your next oil change. Crush washers are inexpensive (usually $2 to $5) and available from any Harley dealer or online parts supplier. Do not reuse the old one or skip it — the drain plug will not seal properly and oil will leak.

Does the kit include everything I need to do the oil change?

The kit includes the filter, washer, and sometimes oil, but not tools or drain pan. You will need a socket wrench for the drain plug, a filter wrench to remove the old filter, a drain pan to catch used oil, and rags or paper towels. Some kits include a small tube of gasket sealant, but most do not.

How do I know if my kit includes oil?

Check the product title and description before ordering. Kits labeled "oil change kit with oil" or "complete oil change kit" include quarts. Kits labeled "filter and washer kit" or "service kit" do not. The product page always lists what is in the box.

Can I use a different oil weight than what came in the kit?

Only if your owner's manual allows it. If the kit includes 20W-50 and your manual says "20W-50 or 10W-40," you can switch. If your manual specifies only 20W-50, use that weight. Using a lighter oil to save money will damage your engine over time.