Dedicated Subsystem WorkbenchPlatform Gen: 2017–2024

2023 Harley-Davidson Road Glide / Street Glide M8 (107/114/117) Oil Capacities, Coolant & Fluid Specifications

Verified fluid capacities for 2023 Harley-Davidson Road Glide / Street Glide M8 (107/114/117): engine oil 4.0 qt (3.8 L) SAE 20W-50 V-Twin Full Synthetic, viscosity SAE 20W-50 API CI-4/CH-4 or JASO MA2, coolant 1.0 qt (0.95 L) for Twin-Cooled models (50/50 OAT Extended Life), brake fluid, and fork oil levels.

Gen 2017–2024

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2017 through 2024.

Select Model Year:(Active: 2023)

2017 2018 2019 2020 2021 2022 2023 2024

Engine

1868cc

Drive

Not Available

Cooling

Precision Oil-Cooled Cylinder Heads / Air-Cooled Cylinders

Fluids & Service Capacities

Shop Fluids →

Engine Oil (Drain & Filter Change)4.0 qt (3.8 L) SAE 20W-50 V-Twin Full Synthetic

Engine Oil (Drain Only)3.5 qt (3.3 L)

Recommended Oil ViscositySAE 20W-50 API CI-4/CH-4 or JASO MA2

Coolant System Capacity1.0 qt (0.95 L) for Twin-Cooled models (50/50 OAT Extended Life)

Brake Fluid StandardDOT 4 High-Temperature Platinum Fluid

Drivetrain, Chain & Gearing

Gearing Calculator →Shop Chains & Sprockets →

Drive Chain PitchBelt Drive

Chain Link Count140 Links

Front Sprocket Teeth32T

Rear Sprocket Teeth68T

Final Drive ConfigurationCarbon Belt Drive

Ignition & Electrical Specifications

Shop Plugs & Batteries →

OEM Spark Plug Part NumberHarley-Davidson 6R12 / NGK DCPR7E

Electrode Spark Plug Gap0.97 mm (0.038 in)

OEM Battery Reference CodeYTX30L-BS

Battery Output & Rating12V 30Ah 400 CCA High-Performance Factory Sealed AGM

Spark Plug Inspection IntervalN/A

Wheels, Tires & Inflation Pressures

Shop Tires →

Front Tire Dimensions130/60B19 61H

Cold Front Inflation PressureN/A

Rear Tire Dimensions180/55B18 80H

Cold Rear Inflation PressureN/A

OEM Wheel Rim Widths (F / R)3.50" / 5.50"

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2023 Harley-Davidson Road Glide / Street Glide M8 (107/114/117) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

1-Click Factory Service KitOEM Spec Fluid Capacities Matched

Workshop Maintenance Kit & Factory Fluids

Authentic factory-grade motor oil, oil filter, and high-temp brake fluid matched precisely to 2023 Harley-Davidson Road Glide / Street Glide M8 (107/114/117) capacities.

Full Kit Subtotal

$53.35

20W-50 Heavy-Duty Synthetic

Silkolene Comp 4 4T Oil 20W-50 (1 Quart)

1-Quart Bottles (x4 Included)

Matches factory 20W-50 spec (Oil spec: 4.0 qt (3.8 L) SAE 20W-50 V-Twin Full Synthetic)

Item Price

$47.80($11.95 ea)

DOT 4 Synthetic Formula

EBC High-Performance DOT 4 Synthetic Brake Fluid

8.8 oz (250 ml) Workshop Bottle

Meets & exceeds factory DOT 4 High-Temperature Platinum Fluid specifications

Item Price

$5.55

Factory OEM Spark Plug Spec

Harley-Davidson 6R12 / NGK DCPR7E

Gap: 0.97 mm (0.038 in)

Inspection milestone: Not Available. Exact factory part specification.

Authentic OEM Reference

Search OEM Plugs →

Complete Workshop Maintenance Package3 Essential Service Items

Includes 20W-50 Heavy-Duty Synthetic engine oil (1-Quart Bottles (x4 Included)), high-flow filter & DOT 4 fluid.

Kit Total

$53.35

Explore Other Subsystems for this 2023 Harley-Davidson Road Glide / Street Glide M8 (107/114/117)

Jump straight into dedicated factory specifications and interactive workshop diagnostic engines.

← Full Motorcycle Overview

Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

Open Dedicated Workbench →

Subsystem Guide/fuses-relays

Fuses & Relays

Main: N/A • Location: N/A

Open Dedicated Workbench →

Subsystem Guide/compression

Compression & Leakdown

Ratio: N/A

Open Dedicated Workbench →

Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

Open Dedicated Workbench →

Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

Open Dedicated Workbench →

Subsystem Guide/electrical

Charging & Battery

Battery: YTX30L-BS • CCA: 400

Open Dedicated Workbench →

Subsystem Guide/tires

Tires & Gearing

Front: 130/60B19 61H • Rear: 180/55B18 80H

Open Dedicated Workbench →

Subsystem Guide/suspension

Suspension & Sag

Front Travel: N/A • Rear Travel: N/A

Open Dedicated Workbench →

Subsystem Guide/maintenance

Maintenance Schedule

Oil: N/A • Valves: N/A • Plugs: N/A

Open Dedicated Workbench →

← Return to Full Comprehensive Motorcycle Specification Hub (2023 Harley-Davidson Road Glide / Street Glide M8 (107/114/117))

Looking for direct-fit parts for this 2023 Road Glide / Street Glide M8 (107/114/117)?

Browse authentic verified parts, motor oils, filters, brake pads, and tires that fit this exact bike.

Browse Direct-Fit Parts