Twin Power 17-Up M8 Case Plug O-Ring Replaces H-D 11900010 10Pk
Why this price?
$16.99 is MSRP, the lowest price TwinPower lets us list it at. Additionally, Pro members get $2.89 back on this part.
$16.99 − $2.89 = $14.10
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to TwinPower, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with TwinPower, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
Couldn't load pickup availability
Twin Power™ O-ring and seal kits provide precision OEM replacements for Harley-Davidson engines, transmissions, and primaries, ensuring leak-free performance in convenient multi-packs.
- Direct H-D replacements restore factory sealing on cams, pushrods, cases, plugs, and drains
- Durable construction resists heat, vibration, and fluids for reliable long-term maintenance
- Sold in 5 or 10 packs for efficient shop stocking and multiple services
- Specifically for 2017-up M8 (transmission and case plugs)
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2025 | Harley-Davidson | FLHTCUTG Tri Glide Ultra | Base |
| 2022 | Harley-Davidson | FLHTCUTG Tri Glide Ultra G.I. | Base |
| 2020-2022 | Harley-Davidson | FLHTCUTGSE CVO Tri Glide | Base |
| 2017-2024 | Harley-Davidson | FLHTK Ultra Limited | Base |
| 2017-2019 | Harley-Davidson | FLHTKL Ultra Limited Low | Base |
| 2017-2021 | Harley-Davidson | FLHTKSE CVO Limited | Base |
| 2020-2024 | Harley-Davidson | FLTRK Road Glide Limited | Base |
| 2022-2023 | Harley-Davidson | FLTRKSE CVO Road Glide Limited | Base |
| 2023-2025 | Harley-Davidson | FLTRT Road Glide 3 | Base |
| 2017-2019 | Harley-Davidson | FLTRU Road Glide Ultra | Base |
| 2025 | Harley-Davidson | FLTRXRRSE CVO Road Glide RR | Base |
| 2018-2025 | Harley-Davidson | FLTRXSE CVO Road Glide | Base |
| 2024-2025 | Harley-Davidson | FLTRXSTSE CVO Road Glide ST | Base |