Bel-Ray Synthetic 3-Hole Complete Oil Change Kit Fits Harley-Davidson Big Twin and Sportster 1984-Up
Full-synthetic protection, ready in one box. The engine, transmission, and primary all get drained, filtered, and refilled in the same service, with platform-matched Bel-Ray fluids that hold their viscosity through long highway pulls and stop-and-go heat. The bike pulls cleaner, shifts crisper, and goes longer between intervals.
Key Features
- Pre-bundled oil-change kit covering the engine sump and the separate (or shared) transmission and primary cases in one box, sized per platform variation
- Bel-Ray V-Twin Synthetic Engine Oil 20W-50 – a full-synthetic blend built on a polyalphaolefin (PAO) and synthetic ester base, rated API SN and JASO MA2 for V-twin wet-clutch compatibility
- Platform-matched transmission fluid: Bel-Ray V-Twin Sport Transmission Fluid for the Sportster shared trans/primary compartment, or Bel-Ray Big Twin Transmission Oil 85W-140 (API GL-5) for Evolution, Twin Cam, and Milwaukee-Eight separate gearboxes
- Bel-Ray V-Twin Primary Chaincase Lubricant included on Big Twin and Milwaukee-Eight variants for the separate primary chaincase
- HiFloFiltro HF171 racing-style oil filter included in Black (HF171BRC) or Chrome (HF171CRC) finish, both with a pre-welded 17 mm hex nut for easier removal
- Drain-plug O-rings supplied for every drain plug the variation services – two for the Sportster, three for Big Twin and M8
Technical Specifications
- Engine Oil: Bel-Ray V-Twin Synthetic Engine Oil 20W-50 (PAO + synthetic ester base, full-synthetic)
- Engine Oil Rating: API SN, JASO MA2
- Engine Oil Quantity: 4 liters (Sportster, Big Twin Evo/TC) or 5 liters (Milwaukee-Eight)
- Transmission Fluid (Sportster): Bel-Ray V-Twin Sport Transmission Fluid, 1 liter for the shared trans/primary compartment
- Transmission Oil (Big Twin / M8): Bel-Ray Big Twin Transmission Oil 85W-140 (API GL-5), 1 liter
- Primary Lubricant (Big Twin / M8): Bel-Ray V-Twin Primary Chaincase Lubricant, 1 liter
- Oil Filter: HiFloFiltro HF171 series racing-style with pre-welded hex nut – Black (HF171BRC) or Chrome (HF171CRC)
- OEM Filter Cross-Reference: 62700296, 63731-99, 63731-99A, 63798-99
- Drain-Plug O-Rings: 2 (Sportster) or 3 (Big Twin / M8)
Fitment Notes
- Sportster XL variant: services every 1986-2022 air-cooled Sportster XL (XL883, XL883L, XL883N, XL883R, XL1200 series, XR1200)
- Big Twin Evolution and Twin Cam variant: services 1984-1999 Evolution and 1999-2017 Twin Cam chassis (Touring, Softail, Dyna, FXR)
- Milwaukee-Eight variant: services 2017-Up M8 Touring and 2018-Up M8 Softail at 107, 114, and 117 cubic inches
- For a DRY-fill primary on Big Twin or M8 (clutch swap, gasket replacement), plan on roughly one additional quart of Bel-Ray Primary Chaincase Lubricant beyond what is supplied
- Review the Fitment tab for the complete year and model breakdown
- Not affiliated with or endorsed by Harley-Davidson.
