Fuel Rail Diaphragm Kit Replacement for Mercury Optimax 2.5L 135-175HP 3.0L 200-300HP 2PCS 8M6002988 1PCS 804533 Tool Kit 889431

Fuel Rail Diaphragms 8M6002988 + Tracker Diaphragm 804533 + Tool Kit 889431 Replacement for Mercury 2.5L 3.0L EnginesOEM Part NumberFuel Rail Diaphragms: 2PCS 8M6002988Tracker Diaphragm: 1PCS 804533Tool kit: 889431Fit For the Following Models8M6002988 – Air/Fuel Regulator DiaphragmType: Flat top diaphragmInternal Structure: With steel balls insideApplication Position:Fuel or air regulator on port side fuel rail (3.0L engines)Fuel regulator on port side fuel rail (2.5L engines)Compatible Engines:Replacement for Optimax 3.0L Models (200–300 HP)Replacement for Optimax 2.5L Models (135–175 HP)Notes:Fits both air and fuel regulators on 3.0L enginesFits fuel regulator only on 2.5L engines804533 - Tracker DiaphragmDesign Feature: Short knob on top (tracker style)Engine Compatibility:Replacement for Optimax 2.5L Engines: 135–175 HPReplacement for Optimax 3.0L Engines: 200–300 HPInstallation Location: Starboard fuel railUsed as tracker diaphragm on both 2.5L and 3.0L enginesIdentification: Easily identified by the short knob on the top of the diaphragmThis diaphragm kit serves as a replacement for Mercury Optimax engines, restoring proper fuel and air pressure regulation to ensure smooth idle, reliable starting, and stable engine performance.Package Includes: 2X Fuel Rail Diaphragms+1X Tracker Diaphragm+Tool Kit

• 1.【Precise Engine Compatibility】This fuel rail diaphragm kit is engineered for Mercury Optimax 2.5L 135-175HP and 3.0L 200-300HP engines, perfectly matching port side fuel rail fuel/air regulators for 3.0L models and fuel regulators only for 2.5L units, with the tracker diaphragm fitting starboard fuel rails on both engine sizes for a seamless fit.
• 2.【Genuine OE Part Number Match】Including 2PCS fuel rail diaphragms 8M6002988 with internal steel balls and flat top design, 1PCS tracker diaphragm 804533 featuring a distinctive short top knob for easy identification, plus a dedicated tool kit 889431, all crafted to replace original Mercury components with exact part number specifications.
• 3.【Restores Optimal Engine Performance】Replacing worn diaphragms with this kit revives proper fuel and air pressure regulation in Mercury Optimax engines, eliminating irregular idle and starting issues, and ensuring consistent power delivery and stable overall operation for marine engine applications.
• 4.【Durable Structural Design】The 8M6002988 flat top diaphragms come with integrated steel balls for enhanced structural strength and reliable pressure control, while the 804533 tracker style diaphragm’s short top knob ensures secure installation and easy recognition during maintenance and replacement work.
• 5.【Complete Replacement Solution】This all-in-one kit includes all essential components for a full fuel rail diaphragm replacement on compatible Mercury Optimax engines, with the included 889431 tool kit streamlining the installation process, no additional parts needed for a hassle-free repair of fuel and air regulator systems.