Mercury – 90° Fitting | Pressure Port Elbow | 22-891533

Overview
This 90-degree fitting is the small elbow used on pressure-sensor setups for certain 2.5XS 2.5L DFI engines. It lets the hose or sensor make a clean turn off the block without getting pinched or forced into a bad angle. On the water, it helps keep the pressure connection tight so your readings stay steady and predictable. It’s a simple part, but on these engines, it’s the one that makes the routing work.

Key Features
    • 90° Elbow – Gives the hose a clean bend in tight spots.
    • OEM Thread Fit – Matches Mercury’s block port correctly.
    • Good Seal Surface – Helps prevent leaks at the pressure port.
    • Marine-Ready Metal – Handles vibration, spray, and heat.
    • Sensor Kit Component – Used in Mercury pressure-sensor kits.

Engine & Boat Compatibility
    • 2.5XS 2.5L DFI
    • Serial: 0T997974–1E000796
    • Block pressure-port fittings
    • Water-pressure or sensor-based systems

Performance & Practical Benefits
This elbow keeps the hose or sensor from fighting the space around the block. It reduces strain, stays tight when the engine vibrates, and helps the gauge or sensor hold a steady reading. If the old elbow is leaking or corroded, swapping in a new one usually clears up pressure issues right away.

Why Buy OEM
OEM elbows fit the port correctly and don’t loosen or leak as easily as generic versions. They’re built for the exact seat depth and thread style used on these engines. Most boaters stick with OEM because a poor seal at the block turns into bad readings fast.

FAQ
1. How do I know this is the right fitting?
If you’re working on a 2.5XS 2.5L DFI in the listed serial range, this is the correct elbow.

2. Do I need sealant?
A small amount of Mercury-approved sealant is fine if your setup calls for it.

3. What causes failure?
Corrosion, overtightening, or age are the usual culprits.

4. Anything to check before installing?
Make sure the port surface is clean and the elbow threads smoothly.

5. What does a bad elbow do on the water?
You’ll see low or inconsistent pressure readings, or notice moisture around the fitting.