Bel-Ray Semi-Synthetic Engine Oil Change Kit For 1984-Up Harley Davidson Big Twin and Sportster
For riders who change their oil on schedule and want synthetic protection without the full-synthetic price, this engine-only kit delivers exactly what the drain requires — nothing more, nothing less. Platform-matched oil volumes, a premium filter, and a fresh o-ring arrive together so your next service stays clean, fast, and on budget.
Key Features
- Single-box engine oil service — semi-synthetic engine oil, filter, and drain-plug o-ring included in one purchase
- HiFlofiltro HF171 series oil filter included in black or chrome with a pre-welded hex nut for tool-assisted removal
- Combines the benefits of fully synthetic oils with the lower cost of petroleum oils
- Synthetic ester base provides high film strength for improved component protection
- High viscosity index delivers stable viscosity across a wide operating temperature range
- Improved oxidation resistance helps the oil withstand breakdown over the drain interval
- Formulated for riders who change their oil at approximately 5,000-mile intervals
Technical Specifications
- Engine Oil: Bel-Ray V-Twin Semi-Synthetic 20W-50 — Synthetic Ester and petroleum blend
- Engine Oil Rating: API SN / Registered JASO MA2
- Oil Filter: HiFlofiltro HF171 series — socket-removal style
- Filter Finish Options: Black or Chrome
Kit Contents by Platform
| Kit | Engine Oil | O-Rings |
|---|---|---|
| Big Twin | ||
| Evolution / Twin Cam (1984-2017) | 4 Liters | 1 |
| Milwaukee-Eight (2017-Up) | 5 Liters | 1 |
| Sportster | ||
| XL Sportster (1986-2022) | 4 Liters | 1 |
Fitment Notes
- Kit contents are platform-specific; Big Twin, Milwaukee-Eight, and Sportster kits are not interchangeable
- This kit services the engine compartment only — transmission and primary chaincase fluids are not included and must be serviced separately
- Riders with a 2017 model year should confirm their engine generation (Twin Cam or Milwaukee-Eight) before selecting a kit, as both were produced that year
- Please review the Fitment tab for the complete year and model compatibility breakdown
