BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | TIRE & SERVICE CHEMICALS & LUBRICANTS CHEMICALS & LUBRICANTS 722 DESCRIPTION PART # Synthetic chain case lubricant 45916 SYNTHETIC CHAIN CASE LUBRICANT •100% synthetic chain case lubricant 75W-140 •Formulated to maintain exceptional flow and extremely low pour point of -40 °F •Shear-stable formula maintains viscosity and minimizes chain and sprocket wear •Robust anti-wear and extreme pressure chemistries provide protection under high loads •Advanced additive system keeps surfaces free of corrosion and minimizes oxidation • 16 fl. oz. bottles, 12 per case; sold each DESCRIPTION PART # V-Twin synthetic primary oil 3603-0043 V-TWIN SYNTHETIC PRIMARY OIL • A high-quality, full synthetic, ester-based motorcycle gear oil formulated for high-performance transmissions and primary chaincases •Designed for use in all 84-and-newer H-D models with wet diaphragm spring clutches •Extreme pressure additives and surface active chemistry protect against shock loads and allow smooth shifting under peak loads and rpm •Robust formula resists mechanical shearing and heat breakdown of the oil •Ultra-clean detergents protect gears from wear, deposits and allow for trouble-free operation • Quart bottles, 12 per case; sold each DESCRIPTION PART # V-Twin primary oil 3603-0036 V-TWIN PRIMARY OIL •Mineral-based motorcycle gear oil • Designed for use in all 84-up Big Twin models with wet diaphragm spring clutches •Formulated specifically for high-performance primaries •Advanced additives reduce clutch and fluid drag while lubricating gears, sprockets, chains and all critical primary case components •Superior film strength for greater protection against shock loads • 1 qt. bottles, 12 per case; sold each DESCRIPTION PART # 5W, 1 L 59901-5 5W, 5 gal 3609-0026 7W, 1 L 59901-7 10W, 1 L 59901-10 DESCRIPTION PART # 10W, 5 gal 3609-0143 15W, 1 L 59901-15 Pail pump, 5 gal 10105 RACING FORK FLUID • Mineral-based racing fork fluid • Zero-drag fluid with special rust and corrosion inhibitors, as well as an antifoam agent and oxidation stabilizers •Reduces overall friction and prevents stiction • Shear-stable, high viscosity index formula maintains film strength and eliminates wear •Maintains optimal damping performance by minimizing foaming and air entrainment •Keeps internals clean while eliminating corrosion and conditioning seals • Available in liter bottles, 12 per case and 5 gal pail; sold each 59901-5 59901-7 DESCRIPTION PART # 5W, 16 fl. oz. 54916-5 5W, 1 L 3609-0001 10W, 16 fl. oz. 55916-10 10W, 1 L 3609-0002 DESCRIPTION PART # 15W, 16 fl. oz. 56916-15 15W, 1 L 3609-0003 20W, 16 fl. oz. 57916-20 20W, 1 L 3609-0004 FORK OIL •Mineral-based fork oil •Designed for cartridge and standard-type forks •Lubricinol-fortified formulation reduces overall friction and decreases stiction • Shear-stable, high viscosity index formula maintains film strength and reduces wear •Maintains optimal damping performance by minimizing foaming and air entrainment •Keeps internals clean while eliminating corrosion and conditioning seals • Available in 16 fl. oz. or 1 liter bottles, 12 per case; sold each •Made in the U.S.A. 57916-20 3609-0002 DESCRIPTION PART # 10W 3609-0067 DESCRIPTION PART # 20W 3609-0068 V-TWIN FORK OIL •Mineral-based fork oil •Developed and tested in H-D Fork Systems •Provides excellent lubricity and controls foaming plus protects suspension system against corrosion • Special Lubricinol formula conditions, seals and protects moving parts and reduces stiction •Works over a wide operating temperature range •Advanced detergents provide ultra-clean operation and protect suspension systems from wear and deposits • 10WT = H-D Type E, 20WT = Screamin’ Eagle Heavy • 1 qt. bottles, 12 per case; sold each 3609-0067 DESCRIPTION PART # Suspension cleaner 3704-0249 SUSPENSION CLEAN •Professional fast-drying formula •Quickly removes suspension fluid and grease; leaves no residue •Will not remove most inks or printing •Will not harm most rubber materials or bushings •Displaces moisture; won’t harm O-rings or seals •No harsh chemical smell • 13 oz. net weight cans, 12 per case; sold each •Made in the U.S.A.
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