Mercury – Throttle Position Indicator | 2-Stroke Performance Series | OEM Assembly | 8M6005165

Overview

When you spend your weekends running shallow rivers or stretching out the throttle on open water, you start to appreciate the little components that keep your engine perfectly in sync with your hand. The Quicksilver 8M6005165 Throttle Position Indicator (TPI) is one of those small but essential parts. It’s the quiet link between your throttle input and the engine’s response, letting you feel that clean, steady surge forward without hesitation. With the right TPI installed, acceleration feels smooth and predictable—something every boater can appreciate whether you’re creeping through the marina or jumping onto plane at first light.

Key Features

• Monitors throttle plate angle to ensure precise fueling and ignition timing
• Engineered for long-term reliability in harsh marine conditions
• Ready-to-install assembly compatible with standard shop tools
• Durable materials designed to resist moisture, vibration, and high engine heat
• Built to Mercury Marine OEM performance requirements for accuracy and durability

Engine & Boat Compatibility

The 8M6005165 TPI fits a wide range of high-performance Mercury and Mariner outboards, including:

• 75–300hp 2-Stroke engines (1.5L, 2.5L, 3.0L, 3.2L, and 3-cylinder)
• Pro XS, Sport XS, Jet, DFI, EFI, ProMax, Marathon, SeaPro, JP, Long, SST series
• Jet-Powered 200–250hp DFI and EFI engines
• M2 JetDrive SportJet models

These engines are found on everything from bass boats and center consoles to jet boats and lightweight performance hulls.

Performance & Practical Benefits

A properly functioning TPI makes a surprising impact on day-to-day boating. With this OEM unit installed, you’ll notice:

• Smoother throttle transitions when you ease forward from idle or push down hard to climb onto plane
• Tight, precise fueling that eliminates hesitation and flat spots during acceleration
• Improved idle stability, especially on high-output 2-Stroke models
• Consistent response across the full throttle range, even under heavy load or in rough chop

Because the part is calibrated to Mercury’s specifications, it communicates cleanly with the engine’s control system, keeping performance predictable and dependable.

Why Buy OEM

When it comes to sensors, accuracy is everything. That’s why sticking with a genuine Mercury Marine part is the smart choice:

• Designed specifically for your engine family—no guesswork, no fitment issues
• Built to survive years of heat, vibration, spray, and constant throttle movement
• Helps protect the engine by ensuring correct fueling under all operating conditions
• Avoids the risks of aftermarket sensors that drift out of calibration or fail early
• You get reliable performance the first time, without the hassle of troubleshooting cheap replacements

If you’re maintaining a hard-running 2-Stroke, OEM isn’t just a preference—it’s peace of mind.

FAQ Section

Q1: Which engines does the 8M6005165 TPI fit?

It fits Mercury and Mariner 75-300hp 2-Stroke models across Pro XS, Sport XS, Jet, DFI, EFI, ProMax, Marathon, SeaPro, and SportJet families.

Q2: What makes this part better than aftermarket versions?

OEM accuracy, calibration stability, and durability under marine heat and vibration set it apart.

Q3: How do I confirm this is the correct replacement?

Match your engine’s model and serial range with your owner’s manual or Mercury parts guide.

Q4: Can it be used in both saltwater and freshwater environments?

Yes—its materials are designed for long-term exposure to either environment.

Q5: Is installation simple?

Most boat owners with basic tools can install it. Just follow your service manual for proper alignment and calibration checks.