2012 Harley-Davidson FLHTK Electra Glide Ultra Limited — Maintenance & Ownership Guide
Routine Maintenance
Key maintenance tasks to keep your 2012 Harley-Davidson FLHTK Electra Glide Ultra Limited running reliably.
Oil Change
Engine oil (4 qt) should be changed every 5,000 miles; primary and transmission fluids every 10,000 miles.
Brake Fluid Flush
DOT 4 fluid must be flushed every 2 years to prevent the ABS module from sticking or failing.
Air Suspension Pressure
Rear shocks require periodic pressure checks via the Schrader valve to maintain ride quality and prevent bottoming.
Common Wear Items
Parts that wear over time on the 2012 Harley-Davidson FLHTK Electra Glide Ultra Limited and should be inspected regularly.
Compensator Sprocket
The stock compensator is prone to wear, leading to 'clunking' on startup and metallic noise at low RPMs.
Hydraulic Lifters
The 'C' series lifters introduced in 2012 are known for higher failure rates; failure can damage the camshaft.
Tires
Heavy touring load causes the rear tire to flat-spot in the center if mostly used for highway miles.
Popular Upgrades
The most popular aftermarket upgrades for the 2012 Harley-Davidson FLHTK Electra Glide Ultra Limited.
Stage 1 Exhaust/Tune
Removes the catalytic converter from the head pipe to significantly reduce heat on the rider's right leg.
Aftermarket Compensator
Upgrading to a Baker or Darkhorse unit solves the recurring 'compensator clunk' permanently.
S&S Lifters
Proactive replacement of factory lifters with S&S Precision units prevents catastrophic engine damage.
Common Replacement Parts
Parts that commonly need replacing on the 2012 Harley-Davidson FLHTK Electra Glide Ultra Limited.
Battery
The high-compression 103 engine requires a strong battery (370 CCA) to turn over reliably.
Stator/Voltage Regulator
Charging system components can fail due to high heat exposure, especially in parade-duty or heavy traffic.
Used Buying Inspection Checklist
What to look for when buying a used 2012 Harley-Davidson FLHTK Electra Glide Ultra Limited.
ABS Module Function
Check for a solid ABS light or spongy brakes; neglected fluid changes lead to expensive module replacement.
Compensator Noise
Listen for a 'bag of rocks' sound in the primary at idle or a loud bang during startup.
Exhaust Heat Shields
Inspect for blueing or rattling, which may indicate the catalytic converter is overheating or the shields are loose.
Service Records (Brake Flush)
Verify the 2-year brake fluid flush was performed to ensure ABS longevity.
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