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Dedicated Subsystem WorkbenchPlatform Gen: 1990–2026

2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS) Oil Capacities, Coolant & Fluid Specifications

Verified fluid capacities for 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS): engine oil 4.70 L (5.00 US qt), viscosity H-D Screamin' Eagle SYN3 20W-50 Full Synthetic or Genuine H-D 360 20W-50, coolant Not Applicable (Air / Oil Cooled), brake fluid, and fork oil levels.

Technical PassportOEM VERIFIED
Engine
1868cc
Cooling
Air / Oil-Cooled with Dual Internal Counterbalancers
Final Drive
Belt Drive
Engine Oil
4.70 L (5.00 US qt)
Spark Plug
H-D 6R10 / 6R12
Front Tire
160/60R18 70V
Gen 1990–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 1990 through 2026.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available
1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS).
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Select Model Year:(Active: 2022)
37 Production Years (1990–2026)
Suggested Items4 Verified Workshop Consumables Available for this Job
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Fluids & Service Capacities
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Engine Oil (Drain & Filter Change)4.70 L (5.00 US qt)
Engine Oil (Drain Only)N/A
Recommended Oil ViscosityH-D Screamin' Eagle SYN3 20W-50 Full Synthetic or Genuine H-D 360 20W-50
Coolant System CapacityNot Applicable (Air / Oil Cooled)
Brake Fluid StandardNot Available
Drivetrain, Chain & Gearing
Drive Chain PitchBelt Drive
Chain Link Count133-Tooth Carbon-Fiber Reinforced (24mm width)
Front Sprocket TeethN/A
Rear Sprocket TeethN/A
Final Drive ConfigurationCarbon Belt Drive
Ignition & Electrical Specifications
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OEM Spark Plug Part NumberH-D 6R10 / 6R12
Electrode Spark Plug Gap0.8–0.9 mm (0.031–0.035 in)
OEM Battery Reference CodeYTX20HL-BS / H-D 65989-97E
Battery Output & RatingNot Available
Spark Plug Inspection IntervalN/A
Wheels, Tires & Inflation Pressures
Front Tire Dimensions160/60R18 70V
Cold Front Inflation PressureN/A
Rear Tire Dimensions240/40R18 79V
Cold Rear Inflation PressureN/A
OEM Wheel Rim Widths (F / R)3.50" / 5.50"
Verified OEM Wheel Fitment: 160/60-18 (F) + 240/40-18 (R)
Shop In-Stock Matched Pairs→

Official NHTSA Safety Recalls & Technical Bulletins

3 Active Campaigns
U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).
Verify VIN on NHTSA.gov
The U.S. National Highway Traffic Safety Administration reports 3 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.
NHTSA #25V375000SUSPENSION:REAR:SHOCK ABSORBER
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Defect Description

Harley Safety Recall 0188: 2018–2024 Softail rear shock pre-load adjuster mounting tab can fracture under vibration, potentially allowing adjuster to contact rear tire.

Safety Hazard / Consequence

Contact between adjuster body and rear tire can cause tire damage, sudden loss of tire pressure, and loss of vehicle control.

Factory Remedy & Repair Action

Dealers install a reinforced retention bracket kit free of charge.

NHTSA #23V591000SUSPENSION:REAR:SHOCK ABSORBER
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NHTSA #18V734000POWER TRAIN:CLUTCH ASSEMBLY
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OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins
Bulletin #HD-0181Safety Recall Bulletin 0181 & 0182 / NHTSA 23V-591: Softail Rear Shock Absorber Pre-Load Fastener Rear Tire Contact
Source: RCLRPT-23V591-6615.PDF
Mandated Torques:Torque: 12–15 N·m (106–133 in-lb) (Pre-load Adjuster Bracket Mounting Screw)Torque: 95–108 N·m (70–80 lb-ft) (Upper & Lower Shock Eye Mount Bolts)Torque: 136–149 N·m (100–110 lb-ft) (Rear Axle Cone Nut)
Consumable Specs:Loctite 243 Medium Strength Blue ThreadlockerIsopropyl Alcohol Surface Cleaner
Genuine Part Numbers:102008499150010454000142
Recalls 0181 & 0188 • NHTSA 23V-591 & 25V-375

Harley-Davidson Softail Mono-Shock Pre-Load Adjuster & Tire Clearance Architecture

Fast adjuster bracket reinforcement, tire clearance inspection (≥ 10 mm), and 95–108 N·m shock mounting torques.

SOFTAIL HIDDEN MONO-SHOCK CHASSISFRONT EYE: 95-108 N·mREAR EYE: 95-108 N·mKNOB (0-5)BRACKET: 12-15 N·mLOCTITE 243 BLUE240mm REAR TIREGAP ≥ 10 mmMANDATED SERVICE & RECALL PROTOCOL:• Fastener: Retorque adjuster screw to 12–15 N·m (106–133 in-lb) with Loctite 243 Blue.• Bracket Kit: Install reinforced retention bracket (Recall 0188 countermeasure).• Clearance: Verify ≥ 10 mm air gap between adjuster knob and tire across full stroke.
Shock Mounting Bolts95–108 N·m (70–80 lb-ft)
Adjuster Bracket Screw12–15 N·m (106–133 in-lb)
Chemical ThreadlockerLoctite 243 (Medium Blue)
Dynamic Tire Clearance≥ 10.0 mm (0.39 in)
Bulletin #HD-TSB-21-04Technical Service Bulletin TSB-21-04: Fat Boy Solid Lakester Wheel Hub, 240mm Rear Tire & Pulley Torques
Source: H-D_TSB_21-04_Lakester_Hub.pdf
Mandated Torques:Torque: 75–88 N·m (55–65 lb-ft) + 45°–50° Turn (Rear Driven Pulley Bolts - Loctite 262 Red)Torque: 41–47 N·m (30–35 lb-ft) (Front & Rear Brake Rotor Torx Screws - Loctite 243 Blue)Torque: 136–149 N·m (100–110 lb-ft) (Rear Axle Cone Washer & Nut)Torque: 102 N·m (75 lb-ft) (Front Axle)Torque: 24–27 N·m (18–20 lb-ft) (Front Axle Pinch Bolts)
Consumable Specs:Loctite 262 High-Strength Red Threadlocker (Pulley Bolts)Loctite 243 Medium-Strength Blue Threadlocker (Rotor Screws)Anti-Seize Lubricant (Axle Shafts)
Genuine Part Numbers:410003913700021441500147
Fat Boy Icon • Lakester Solid Disc Driveline

Harley-Davidson Fat Boy Solid Lakester Wheel & 240mm Rear Driveline Hub Assembly

Cast solid disc wheel torques, 240/40R18 rear tire specs, 136–149 N·m rear axle, and driven pulley angle torque.

REAR AXLE NUT: 136-149 N·m(100-110 lb-ft) CONE WASHER66T / 68T DRIVEN PULLEYBOLTS: 75-88 N·m + 45°-50°(LOCTITE 262 RED • NEW BOLTS)292mm REAR ROTORBOLTS: 41-47 N·m(30-35 lb-ft • LOCTITE 243)FAT BOY DRIVELINE SPECS:• Front Rim: 18 x 4.5 in Lakester• Rear Rim: 18 x 8.0 in Lakester• Front Tire: 160/60R18 (36 psi)• Rear Tire: 240/40R18 (42 psi)• Front Axle Nut: 102 N·m• Front Pinch Bolt: 24–27 N·m• Rear Axle Nut: 136–149 N·m• Pulley Bolts: 75–88 N·m + 45°• Rotor Bolts: 41–47 N·m• Belt Deflection: 9.5–12.7 mm• Bearing End Play: < 0.05 mm• Caliper Mounts: 38–52 N·m
Rear Axle Nut136–149 N·m (100–110 lb-ft)
Driven Pulley Bolts75–88 N·m + 45°–50° Turn
Brake Rotor Screws41–47 N·m (30–35 lb-ft)
Front Axle Nut102 N·m (75 lb-ft)
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 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS) capacities.

Full Kit Subtotal
$47.80
SPECS-TO-CART BUNDLESDedicated Direct-Fit Maintenance Bundles Available
Explore interactive 1-click oil change packs, brake flush kits & major tune-up bundles pre-measured for this 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS).
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Silkolene Comp 4 4T Oil 20W-50 (1 Quart)
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: 4.70 L (5.00 US qt))
Item Price
$47.80($11.95 ea)
Factory OEM Spark Plug Spec

H-D 6R10 / 6R12

Gap: 0.8–0.9 mm (0.031–0.035 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
$47.80

Explore Other Subsystems for this 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS)

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

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Subsystem Guide/torques

Fastener Torques

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

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: N/A • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: N/A

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Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

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Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

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

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Subsystem Guide/electrical

Charging & Battery

Battery: YTX20HL-BS / H-D 65989-97E

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Subsystem Guide/tires

Tires & Gearing

Front: 160/60R18 70V • Rear: 240/40R18 79V

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: N/A • Rear Travel: N/A

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: N/A • Valves: N/A • Plugs: N/A

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