8M6002988 – Diaphragm – Mercury Optimax

This genuine replacement Mercury Diaphragm 8M6002988 regulates fuel pressure to the engine, keeping your engine running strong. It fits a range of Mercury TwoStroke and Diesel outboards.

The diaphragm suits the following Mercury OptiMax TwoStroke outboards: 1.5 L 75–125 hp (serial No. 1B417702-2B112787), 2.5 L 115–150 hp (0G960500-0T178499), 2.5 L 125–175 hp (1B736885-2B112787), and 3.0 L 200–300 hp Pro XS and XS (1B504989-2B535571).

It also fits Mercury 3.0 L Diesel DSI (serial 1E052967 and up) and Jet-Powered 3.0 L DFI (serial 1E003046 and up) outboards.

This is the 8M6002988 diaphragm assembly itself — not a full kit — and includes the diaphragm and instruction sheet. The material has been tested for durability and longevity in tough marine environments. Mercury parts and accessories are backed by decades of experience in engineering, testing, and manufacturing to provide the best fit, function, and performance.

Shop at Arizona Outboard Dismantlers to keep your outboard running strong and ready for the water.