2019 Harley-Davidson FLHTK Ultra Limited — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2019 Harley-Davidson FLHTK Ultra Limited running reliably.
3-Hole Oil Change
Requires three different lubricants: Engine (~4.5 qts), Primary (~1 qt), and Transmission (~1 qt). Intervals are typically every 5,000 miles.
Coolant System
The Twin-Cooled system requires checking the coolant level in the reservoir located behind the right-side cover.
Hydraulic Clutch Fluid
The 2019 model uses a hydraulic clutch that requires DOT 4 fluid flushes every 2 years to prevent master cylinder failure.
Common Wear Items
Parts that wear over time on the 2019 Harley-Davidson FLHTK Ultra Limited and should be inspected regularly.
Rear Tire
The heavy weight and high torque of the 114 engine often result in rear tire replacement every 8,000–12,000 miles.
Brake Pads
The Reflex Linked system applies both brakes simultaneously; front pads often wear faster than on non-linked bikes.
Steering Head Bearings
Heavy touring bikes require greasing and adjustment of neck bearings every 25,000 miles to prevent 'death wobble' or notched steering.
Popular Upgrades
The most popular aftermarket upgrades for the 2019 Harley-Davidson FLHTK Ultra Limited.
Stage 1 Kit
High-flow air cleaner, slip-on mufflers, and a tuner are common to reduce engine heat and improve the V-twin sound.
Primary Vent Kit
A factory-authorized fix for fluid transfer (transmission oil migrating to the primary).
Windshield / Deflectors
Owners often swap the stock windshield for taller or recurved versions to further reduce helmet buffeting.
Used Buying Inspection Checklist
What to look for when buying a used 2019 Harley-Davidson FLHTK Ultra Limited.
Transmission Dipstick Level
Check for 'fluid transfer.' If the transmission oil is low and the primary is overfull, the bike needs the vent kit update.
Water Pump Operation
Listen for the electric pump running after a hot shutdown. These pumps are known failure points on 2017-2019 models.
Service Records for Oil Pump
Early M8 engines had 'sumping' issues. Check if the oil pump was ever updated to the 2020+ version (P/N 62400247).
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