Fuel Rail Diaphragms 8M6002988 Tracker Diaphragm 804533 Tool Kit 889431 Replacement for Mercury 47509534

OEM Part Number

Fuel Rail Diaphragms: 2PCS 8M6002988

Tracker Diaphragm: 1PCS 804533

Tool kit: 889431

Fit For the Following Models

8M6002988 – Air/Fuel Regulator Diaphragm

Type: Flat top diaphragm
Internal Structure: With steel balls inside
Application 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 engines
Fits fuel regulator only on 2.5L engines

804533 - Tracker Diaphragm

Design Feature: Short knob on top (tracker style)
Engine Compatibility:

Replacement for Optimax 2.5L Engines: 135–175 HP

Replacement for Optimax 3.0L Engines: 200–300 HP

Installation Location: Starboard fuel rail
Used as tracker diaphragm on both 2.5L and 3.0L engines
Identification: Easily identified by the short knob on the top of the diaphragm

This 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