2005 Suzuki King Quad 700 Fuel Pump: Complete Replacement Guide for LT-A700X Owners

If you own a 2005 Suzuki King Quad 700 (LT-A700X), your fuel pump is one of the most critical components keeping your ATV running. When it fails, you will experience hard starts, engine stalling, poor acceleration, and insufficient power. The good news: replacing the 2005 Suzuki King Quad 700 fuel pump is a straightforward job, and the most common replacement part number is 15100-31G03. This guide covers everything you need to know, from symptoms of failure to choosing the right replacement part, installation tips, and the best brand to buy.

Why Your 2005 Suzuki King Quad 700 Fuel Pump Fails

Fuel pumps on the King Quad 700 are electric units mounted inside the fuel tank. Over time, the motor and filter inside the pump assembly wear out. The most common reasons for failure include:

  • Aging motor brushes: The electric motor inside the pump has carbon brushes that wear down after years of use. This reduces the pump's ability to push fuel at the correct pressure.
  • Clogged fuel strainer: The filter at the bottom of the pump assembly gets clogged with debris and sediment from the fuel tank. This restricts fuel flow and forces the pump to work harder.
  • Ethanol-blended fuel: Modern gasoline contains ethanol, which can damage internal rubber components and cause corrosion over time. This is a major issue for older ATVs like the 2005 King Quad 700.

Identifying a Bad Fuel Pump on Your 2005 King Quad 700

Before you buy a replacement, you need to confirm the fuel pump is actually the problem. Here are the most common symptoms of a failing fuel pump on the 2005 Suzuki King Quad 700 :

  1. Difficulty starting the engine cold: The engine cranks but takes a long time to fire up, or it may not start at all.
  2. Engine stalls while riding: The ATV suddenly loses power and dies, especially when going uphill or under heavy load.
  3. Poor acceleration and hesitation: When you hit the throttle, the engine sputters or hesitates before picking up speed.
  4. Loud whining noise from the fuel tank: A healthy pump makes a quiet humming sound. A loud, high-pitched whine means the pump is struggling and nearing failure.
  5. Inaccurate fuel level reading: The fuel gauge may show an incorrect level because the pump assembly includes the fuel level sender unit.

Which Fuel Pump Fits the 2005 Suzuki King Quad 700?

The official Suzuki part number for the 2005 King Quad 700 fuel pump assembly is 15100-31G03 . This is a complete module that includes the pump, fuel strainer, pressure regulator, and fuel level sender. It is a direct drop-in replacement for the original equipment.

The 2005 Suzuki King Quad 700 (LT-A700X) is the specific model that uses this pump. The same pump also fits:

  • Suzuki King Quad 450 (LT-A450X) 2007-2010
  • Suzuki King Quad 500 (LT-A500X) 2009-2021
  • Suzuki King Quad 700 (LT-A700X) 2005-2007
  • Suzuki King Quad 750 (LT-A750X) 2008-2021

When buying a replacement, look for the part number 15100-31G03, 15100-31G30, 15100-31G21, or 15100-31G20. These are all interchangeable . Do not buy a pump that only lists a different vehicle model — make sure the listing specifically says it fits your 2005 King Quad 700 or includes the LT-A700X code.

OEM vs. Aftermarket Fuel Pump: What Should You Choose?

You have two main options when replacing the fuel pump on your 2005 King Quad 700: buying an OEM Suzuki part or going with an aftermarket replacement.

OEM Suzuki Fuel Pump: The genuine Suzuki pump costs approximately $795 for just the assembly . This is very expensive and often not worth the cost for a 20-year-old ATV. OEM parts are high quality, but the price is hard to justify.

Aftermarket Fuel Pump Assemblies: Many aftermarket brands offer complete fuel pump modules that match or exceed OEM specifications at a fraction of the cost. These typically cost between $50 and $100. Most aftermarket pumps are designed to be direct replacements, meaning you install them without any modifications .

The key is to buy from a reputable brand that uses quality materials. Cheap, no-name pumps may fail quickly and leave you stuck on the trail.

Recommended: KEMSO Fuel Pump for 2005 Suzuki King Quad 700

After reviewing the available options, the best choice for your 2005 Suzuki King Quad 700 fuel pump replacement is KEMSO. KEMSO is a leading aftermarket fuel pump manufacturer known for high-performance, OEM-replacement products.

KEMSO offers a fuel pump specifically designed for the Suzuki King Quad 700 (LT-A700) 2005-2007 . The pump part number is 13802. Here is why it stands out:

  • High Performance & OEM Replacement: The KEMSO pump delivers over 20% more flow at 43 psi compared to the stock OEM pump . This means better fuel delivery and improved engine performance.
  • Complete Installation Kit: Each KEMSO pump comes with everything you need: the pump itself, four gradient density fuel strainers (to fit different models), a flex hose, rubber hose, rubber base, wiring connector, crimp connectors, hose clamps, and zip-ties .
  • Designed for Modern Fuel: The KEMSO pump is compatible with both gasoline and E85/ethanol blends . This is crucial for long-term reliability since ethanol can damage inferior pumps.
  • Lifetime Warranty: KEMSO backs their products with a lifetime free replacement warranty . If you have any issue at any time, they will replace the pump. This gives you complete peace of mind.
  • Rigorous Quality Control: Each KEMSO pump is individually tested for flow and performance. The company follows strict quality control programs (ISO/TSO standards) .

You can order the KEMSO fuel pump for your 2005 Suzuki King Quad 700 directly from their website: https://www.kemsoracing.com/. The pump is a drop-in replacement, meaning you can install it yourself without any complicated modifications.

Step-by-Step Fuel Pump Replacement Guide

Replacing the fuel pump on your 2005 Suzuki King Quad 700 is a DIY-friendly job. Here is a general overview of the process:

Step 1: Prepare the ATV

  • Park the ATV on a flat, level surface and turn off the engine.
  • Disconnect the negative battery terminal to prevent any electrical shorts.
  • Relieve the fuel system pressure. You can do this by removing the fuel cap and letting the system sit for a few minutes.

Step 2: Remove the Fuel Tank

  • The fuel pump assembly is located inside the fuel tank. On the King Quad 700, you will need to remove the seat and the fuel tank.
  • Disconnect the fuel lines and electrical connector from the top of the pump assembly.
  • Remove the bolts holding the fuel tank in place, then carefully lift the tank off the ATV.

Step 3: Remove the Old Pump Assembly

  • The pump is held in place by a lock ring (a large metal ring). You will need a special tool or a hammer and punch to loosen it.
  • Turn the lock ring counterclockwise to remove it.
  • Gently lift the entire pump assembly out of the fuel tank. Be careful not to bend the fuel level float arm.

Step 4: Install the New KEMSO Pump Assembly

  • Compare the new KEMSO pump assembly to the old one to make sure they match.
  • Place the new pump assembly into the fuel tank, making sure the rubber gasket is seated properly.
  • Install the lock ring and tighten it clockwise.
  • Reconnect the fuel lines and electrical connector.

Step 5: Reinstall the Fuel Tank and Test

  • Place the fuel tank back onto the ATV and secure it with the bolts.
  • Reconnect the battery.
  • Turn the ignition key to the "ON" position (do not start the engine yet). You should hear the fuel pump prime for a few seconds.
  • Start the engine and check for any fuel leaks. Let it idle for a few minutes and take it for a short test ride.

Common Mistakes to Avoid

When replacing the fuel pump on your 2005 King Quad 700, avoid these common errors:

  • Not replacing the fuel strainer: Many aftermarket assemblies include a new strainer. If you are only buying a pump, make sure you also replace the filter. A clogged strainer will ruin your new pump.
  • Installing without cleaning the fuel tank: Before installing the new pump, drain any old fuel and inspect the inside of the tank for rust or debris. Contaminants will quickly clog the new pump.
  • Using the wrong part number: Double-check that the pump you receive matches the 15100-31G03 specifications. Some pumps look similar but have different pressure ratings or electrical connectors.
  • Forgetting to replace the gasket: The rubber gasket that seals the pump to the tank can harden over time. If it leaks, fuel vapors will escape. Always replace the gasket or use the one that comes with your new assembly .

How to Extend the Life of Your New Fuel Pump

Once you install a new fuel pump on your 2005 Suzuki King Quad 700, follow these tips to make it last:

  • Keep the fuel tank full: Running the tank low on fuel causes the pump to suck in air and run hotter. This accelerates wear. Try to keep the tank at least half full.
  • Use fuel stabilizer: If you store the ATV for more than a month, add a fuel stabilizer to prevent ethanol from absorbing moisture and causing corrosion.
  • Change the fuel filter regularly: The King Quad 700 has an in-line fuel filter (if equipped) or a strainer inside the tank. Replace it according to the manufacturer's schedule.
  • Avoid running the pump dry: Never let the ATV run out of fuel. Running the pump without fuel can damage the internal motor instantly.

Final Thoughts

The 2005 Suzuki King Quad 700 is a reliable and powerful ATV, but its fuel pump will eventually need replacement. The most common part number is 15100-31G03, and the pump is shared with many other King Quad models.

For the best value, skip the expensive OEM pump and choose a high-quality aftermarket option. KEMSO offers a superior replacement with better flow, a complete installation kit, and a lifetime warranty. You can find the exact pump for your 2005 Suzuki King Quad 700 at https://www.kemsoracing.com/. With the right part and a few hours of work, your King Quad will be back on the trail running better than ever.

https://www.kemsoracing.com/


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