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Harley-Davidson Ultra Limited (2014-2020) — Maintenance Specs

The Ultra Limited (FLHTK) is the full-dress top of Harley's Touring line - fairing, king-size Tour-Pak, twin 55 W passing lamps, heated grips and the Boom! Box infotainment that has its own supplement manual. The 2014-2016 Twin Cam 103 version (often Twin-Cooled, adding a 1.0 L coolant loop rare among Harleys) gave way to the Milwaukee-Eight 107 in 2017 with the bigger 4.5 L oil fill and reworked chassis. Service data follows the Touring line: 22.7 L tank, 36/40 psi Dunlops, DOT 4 fluid, 5,000-mile oil cadence. The Low (FLHTKL) 2015+ lowers suspension and seat, but every fluid figure is identical to the FLHTK in the official manuals.

Quick specs

Oil capacity (with filter) 3.8 Lengine oil with filter, approx (4.0 US qt) - Twin Cam, 2014-2016 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Oil type Harley-Davidson H-D 360 (Screamin' Eagle SYN3 full synthetic acceptable) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Oil viscosity SAE 20W-50 (H-D 360 preferred; SYN3 acceptable) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Spark plug H-D 6R12 (2010-2016 Twin Cam; plug part number not printed in Milwaukee-Eight manual) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Spark plug gap 0.97-1.09 (Twin Cam) / 0.80-0.90 (Milwaukee-Eight) mm 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)

Maintenance schedule

Specification Value Source
Engine oil & filter 1,000 mi first service, then every 5,000 mi (8,000 km) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Spark plug replacement every 30,000 mi (48,000 km) or 2 years 2019 Harley-Davidson Owner's Manual: Touring Models, 94000687 (H-D Service Information Portal)
Brake fluid change every 2 years 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)

Fluids & capacities

Specification Value Source
Oil capacity (with filter) 3.8 Lengine oil with filter, approx (4.0 US qt) - Twin Cam, 2014-2016 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Oil type Harley-Davidson H-D 360 (Screamin' Eagle SYN3 full synthetic acceptable) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Oil viscosity SAE 20W-50 (H-D 360 preferred; SYN3 acceptable) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Final drive oil transmission 0.95 L (1.00 qt); primary chaincase 1.3 L (1.4 qt) 2014-2016 / 1.0 L (34 oz) 2017-2020 Lapproximate 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Coolant capacity 1 LTwin-Cooled models only 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Brake fluid type (DOT) DOT 4 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Fuel capacity 22.7 L6.0 US gal 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)

Torque specs

Specification Value Source
Spark plug 16.3-24.4 (TC) / 9.5-12.2 (M8) Nu00b7m 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)

Electrical

Specification Value Source
Battery 12V, 28 Ah, 405 CCA, sealed maintenance-free 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Spark plug H-D 6R12 (2010-2016 Twin Cam; plug part number not printed in Milwaukee-Eight manual) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Spark plug gap 0.97-1.09 (Twin Cam) / 0.80-0.90 (Milwaukee-Eight) mm 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)

Tires & wheels

Specification Value Source
Front tire size 130/80B17, Dunlop D408FFLHTK with cast wheels 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Rear tire size 180/65B16, Dunlop D407T 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Front tire pressure (solo) 36 psi248 kPa cold 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)
Rear tire pressure (solo) 40 psi276 kPa cold 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal)

Official manual

Owner's manual on Harley-Davidson official site

Opens the manufacturer’s official website in a new tab.

Frequently asked questions

How much oil does an Ultra Limited take?
3.8 L (4.0 qt) with filter on the 2014-2016 Twin Cam; 4.5 L (4.75 qt) on 2017-2020 Milwaukee-Eight models.
What is the Ultra Limited tire pressure?
36 psi front and 40 psi rear (248/276 kPa) cold.
What oil does an Ultra Limited use?
H-D 360 SAE 20W-50, with Screamin' Eagle SYN3 as the synthetic alternative.
Does the Ultra Limited have coolant?
Only Twin-Cooled engine versions (2014-2016) - about 1.0 L (1.1 qt) of H-D-branded coolant; the Milwaukee-Eight 107 is air/oil-cooled.

Sources

Value Source Checked
Oil capacity (with filter): 3.8 L 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Oil type: Harley-Davidson H-D 360 (Screamin' Eagle SYN3 full synthetic acceptable) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Engine Lubrication, oil recommendation chart) 2026-11-03
Oil viscosity: SAE 20W-50 (H-D 360 preferred; SYN3 acceptable) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Final drive oil: transmission 0.95 L (1.00 qt); primary chaincase 1.3 L (1.4 qt) 2014-2016 / 1.0 L (34 oz) 2017-2020 L 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Coolant capacity: 1 L 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Brake fluid type (DOT): DOT 4 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Fuel capacity: 22.7 L 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Engine oil & filter: 1,000 mi first service, then every 5,000 mi (8,000 km) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Spark plug replacement: every 30,000 mi (48,000 km) or 2 years 2019 Harley-Davidson Owner's Manual: Touring Models, 94000687 (H-D Service Information Portal) (p. Specifications pp. 28-30; Capacities Table 11) 2026-11-03
Brake fluid change: every 2 years 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Spark plug: 16.3-24.4 (TC) / 9.5-12.2 (M8) Nu00b7m 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Battery: 12V, 28 Ah, 405 CCA, sealed maintenance-free 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Spark plug: H-D 6R12 (2010-2016 Twin Cam; plug part number not printed in Milwaukee-Eight manual) 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications, Electrical table (spark plug type)) 2026-11-03
Spark plug gap: 0.97-1.09 (Twin Cam) / 0.80-0.90 (Milwaukee-Eight) mm 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Front tire size: 130/80B17, Dunlop D408F 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Rear tire size: 180/65B16, Dunlop D407T 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Front tire pressure (solo): 36 psi 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
Rear tire pressure (solo): 40 psi 2015 Harley-Davidson Owner's Manual: Touring Models, 99466-15 (H-D Service Information Portal) (p. Specifications pp. 22-30; Capacities Table 12) 2026-11-03
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