Protect your high-performance V-Twin powertrain with the ultimate oiling system upgrade: the S&S Cycle Oil Pump and Cam Plate Kit for Milwaukee-Eight (M8) Engines (Part Number: 310-0998B). Precision-engineered in the USA, this dual-stage blueprint kit maximizes oil volume delivery and scavenging performance to completely eliminate oil sumping, reduce engine operating temperatures, and protect critical internal valvetrain components across the lower 48 states.
Why Riders Shop Mad Lads Moto
- Orders placed today ship same-day or next-day across the lower 48 states!
- Eliminate Engine Sumping: Built with an independent dual-stage scavenging configuration that clears oil out of the flywheel cavity far faster than the stock factory pump, reducing oil drag and preventing sudden power loss.
- Premium Billet Construction: Both the oil pump housing and the high-flow cam plate are precision CNC-machined from 6061 billet aluminum, providing unmatched structural strength and stability under extreme thermal loads.
- Increased Oil Flow & Pressure: Optimized internal porting drastically improves oil volume and delivery pressure to the top end, keeping lifters quiet and reducing overall cylinder head temperatures.
- Removable Pressure Relief Valve: Features an easily serviceable pressure relief valve design that can be thoroughly cleaned and inspected without forcing you to completely remove the cam plate assembly from the bike.
- O-Ring Sealed Screen Filters: Equipped with built-in mesh screen filters inside the pump ports to trap debris before it can cycle back into the engine block.
Confirmed Fitment Information
This premium oiling system kit is specifically engineered for Harley-Davidson® Milwaukee-Eight (M8) engines running a water-cooled (Twin-Cooled) cylinder head layout. Based on official manufacturer specifications, it is a direct bolt-on high-performance upgrade for the following motorcycles:
- Harley-Davidson Electra Glide Ultra Limited / Low (FLHTK / FLHTKL): 2017 – 2026+ (Water-Cooled M8 Engines)
- Harley-Davidson Road Glide Ultra / Limited (FLTRU / FLTRK): 2017 – 2026+ (Water-Cooled M8 Engines)
- Harley-Davidson Tri Glide Ultra / CVO Tri Glide (FLHTCUTG / FLHTCUTGSE): 2017 – 2026+ (Water-Cooled M8 Trikes)
- Harley-Davidson CVO Limited (FLHTKSE): 2017 – 2021 (Water-Cooled M8 Engines)
- Harley-Davidson CVO Road Glide Ultra / Limited (FLTRUSE / FLTRKSE): 2018 – 2026+ (Water-Cooled M8 Engines)
- Crucial Installation & Model Safety Note: Part number 310-0998B is meticulously tailored strictly for **Twin-Cooled (Water-Cooled Cylinder Head)** Milwaukee-Eight platforms. It is structurally incompatible with oil-cooled M8 variants (such as standard Street Glides, Road Glides, Softails, or Road Kings) due to completely different passage routing inside the engine case. Always verify your exact engine configuration prior to finalizing your order.
Technical Specifications
| Feature |
Specification |
| Brand |
S&S Cycle |
| Product Line |
Billet Cam Plate & Oil Pump Assembly Kit |
| Engine Family Compatibility |
Harley-Davidson Milwaukee-Eight (M8) |
| Cooling Layout Requirement |
Twin-Cooled / Water-Cooled Cylinder Heads Only |
| Material Finish |
6061 CNC Billet Aluminum / Blue Anodized Accent Finish |
| Oiling Configuration |
Dual-Stage Volumetric Feed & Scavenge Pump |
| Hardware Included |
High-Flow Cam Plate, Oil Pump Gears, Premium O-Rings & Bolts |
| Manufacturer Part Number |
310-0998B |
| Country of Origin |
USA |
US Dollars
