BLUE part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | FATBOOK UPDATE ENGINE ENGINE SECTION 7 FATBOOK DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 3-5 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. 78 PART # DESCRIPTION EMIS* W/ 496 CHAIN DRIVE CAM 0904-0185 Wrinkle black w/ highlighted fins and chrome pushrod tubes 3 0904-0181 Wrinkle black w/ highlighted fins and black pushrod tubes 3 0904-0180 Wrinkle black w/o highlighted fins and black pushrod tubes 3 PART # DESCRIPTION EMIS* W/ 496 GEAR DRIVE CAM 0904-0182 Wrinkle black w/ highlighted fins and chrome pushrod tubes 3 0904-0184 Wrinkle black w/ highlighted fins and black pushrod tubes 3 0904-0183 Wrinkle black w/o highlighted fins and black pushrod tubes 3 FOR 17-25 M-EIGHT OIL-COOLED 107” ENGINES 129” POWER PACKAGES FOR M-EIGHT • Big-bore bolt-on kit increases your 107” M-Eight to 129” with no case machining required • 4.32” bore cylinders with 11:1 forged pistons •S&S oil pump/cam plate with a blue anodized finish •Passage plugs are removable for servicing •Independent scavenge sections for flywheel cavity and cam chest •Debris screen in both scavenge pickups •Magnet in cam chest to help prevent debris from entering the oil pump •Increased oil flow capacity on both the oil feed and scavenge side •Adjustable pressure relief valve can be adjusted with the unit installed in the engine •Quickee pushrods with black pushrod tubes •S&S premium tappets • S&S hard-anodized, black coated tappet cuffs are billet aluminum construction • Improve tappet stability in high-lift, high-rpm situations •S&S 496 cams •S&S high-performance conical single-wire design valve springs • All necessary gaskets, bearings and hardware for bolt-on installation included •Made in the U.S.A. •See page 753 of the 2026 Drag Specialties FatBook for additional 129” Power Packages for M-Eight NOTE: Not for use with H-D FL Trike models. 0904-0183 0904-0181
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