BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | TIRE & SERVICE CHEMICALS & LUBRICANTS CHEMICALS & LUBRICANTS 708 PART # DESCRIPTION 3603-0071 80W-140, 1 quart bottle PREMIUM FULL SYNTHETIC 80W-140 TRANSMISSION OIL • Recommended for use in 4-, 5- and 6-speed Harley-Davidson Big Twin transmissions •Full synthetic fluid specifically formulated for high-performance gear boxes •Exceptional extreme pressure additive package provides excellent wear protection and durability •The viscosity of this product protects components across a wide range of temperatures and protects gears, even at high temperatures •This oil provides smooth shifting operation across all rpm’s •Specifically blended for hot-weather applications •Not for use as a motor oil •Meets and exceeds API GL-5 MT-1 classification • Available in quart bottles, 12 per case; sold each •Made in the U.S.A. PART # DESCRIPTION 3603-0070 80W-90, 1 quart bottle HIGH-PERFORMANCE MINERAL 80W-90 TRANSMISSION OIL FOR BIG TWINS • Recommended for use in 4-, 5- and 6-speed Harley-Davidson Big Twin transmissions •Formulated specifically for high-performance gear boxes •Outstanding film strength provides excellent wear protection and durability •Exceptional extreme pressure additive package •Provides smooth shifting across all rpms •Meets and exceeds API GL-5 classification • Available in quart bottles, 12 per case; sold each •Made in the U.S.A. PART # DESCRIPTION 3604-0016 Gear/chaincase oil, 1 quart bottle HIGH-PERFORMANCE MINERAL GEAR AND CHAINCASE OIL FOR SPORTSTERS •Recommended for use in 1971 and newer XR and XL Harley-Davidson motorcycles where transmission and primary chain case share a common lubricant supply •Formulated specifically for high-performance gear boxes •Outstanding film strength providing excellent wear protection and durability •Exceptional extreme pressure additive package •Provides smooth shifting across all rpms •Meets and exceeds API GL-4 classification • Available in quart bottles, 12 per case; sold each •Made in the U.S.A. PART # DESCRIPTION 3609-0140 20W, Heavy HIGH-PERFORMANCE MINERAL FORK OIL •Recommended for use in both OEM and aftermarket fork assemblies •Specially formulated for consistent damping action • Ideal in either hot or cold climates, without fading or surging • Available in quart bottles, 12 per case; sold each •Made in the U.S.A. PART # DESCRIPTION 3703-0058 DOT-5 brake fluid DOT-5 SILICONE BRAKE FLUID •A universal brake/c lutch fluid for systems requiring DOT 5 silicone fluid •500 °F (260 °C) dry boiling point, 356 °F (180 °C) wet boiling point • Available in 12 oz. (0.355L) bottle, 12 per case; sold each •Made in the U.S.A. PART # DESCRIPTION 3703-0057 DOT-4 brake fluid DOT-4 BRAKE FLUID •A universal brake/clutch fluid for all systems requiring DOT-4 fluid •470 °F (243 °C) dry boiling point, 311 °F (155 °C) wet boiling point • 12 oz. (.355L) bottle, 12 per case; sold each •Made in the U.S.A. PART # DESCRIPTION 3603-0072 Primary oil, 1 quart bottle HIGH-PERFORMANCE MINERAL PRIMARY OIL FOR BIG TWINS •Formulated for use in all 84 and newer Big Twin Harley-Davidson motorcycles equipped with a wet-type diaphragm spring clutch •Specifically made for high-performance primaries •Outstanding film strength provides excellent wear protection and durability •Fluid protects against high-temperature situations •Exceptional extreme pressure additive package •Meets and exceeds API GL-4 classification • Available in quart bottles, 12 per case; sold each •Made in the U.S.A.
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