2007 Yamaha V Star 1300 Fuel Pump: What Riders Need to Know Before Replacing It
Why the 2007 V Star 1300 Fuel Pump Fails
The 2007 V Star 1300 (XVS1300) uses an in-tank electric fuel pump assembly that sits inside the fuel tank. Unlike older carbureted bikes, this EFI system relies on the pump to maintain constant fuel pressure—typically around 43 psi—to the injectors. Over time, several things go wrong:
1. Heat and ethanol damage. Modern gasoline containing ethanol attracts moisture and breaks down internal pump components. The stock pump's brushes and commutator wear prematurely under these conditions, leading to reduced flow and eventual failure .
2. Clogged strainer. The inlet strainer picks up sediment, rust particles, and varnish from old fuel. Once restricted, the pump works harder, overheats, and draws excessive current .
3. Check valve failure. The internal check valve that holds fuel pressure when the bike is off can leak. This forces the pump to re-prime every time you start, adding unnecessary wear .
Common Symptoms of a Failing Fuel Pump
You don't have to wait for a total breakdown. Here are the early warning signs, ranked from subtle to severe:
1. Long cranking times. The engine turns over for several seconds before firing. This happens because fuel pressure bleeds down overnight due to a leaking check valve .
2. Sputtering under load. The bike runs fine at idle but stumbles or surges when you open the throttle, especially on the highway. The pump can't keep up with demand.
3. Loss of power on hot days. Vapor lock or degraded flow at high temperatures causes intermittent hesitation.
4. Whining noise from the tank. A healthy pump is nearly silent. If you hear a high-pitched whine, the pump is struggling.
5. Complete no-start. The engine cranks but never fires, and you can't hear the pump prime when you turn the key. This is the final stage .
OEM Part Numbers and Compatibility
Before you order anything, you need to confirm which pump your bike uses. The 2007 V Star 1300 calls for one of these Yamaha OEM part numbers:
- 3D8-13907-00-00
- 3D8-13907-01-00
- 3D8-13907-02-00
- 3D8-13907-03-00
These numbers refer to the complete in-tank pump assembly . You can also cross-reference with other Yamaha models that share the same pump: the XJR1300 (2007–2015), the MT-01 (2005–2009), and the FZ1 (2006–2015) all use the same base pump design, so replacement options abound .
Replacement Options: OEM vs. Aftermarket
You have three basic routes when replacing the fuel pump on your 2007 V Star 1300:
1. Buy the factory Yamaha pump. This is the most expensive option—expect to pay $300 to $400 for the complete assembly from a dealer. It guarantees a perfect fit, but you're paying a premium for the Yamaha name, and you'll likely face the same failure after another 30,000 miles.
2. Buy a rebuild kit. All Balls and similar brands offer kits that include the pump, filter, hoses, clamps, and wiring harness needed to rebuild your existing fuel pump module . This is the budget route at around $100, but it requires careful work and doesn't address a cracked housing or corroded internal components.
3. Buy a high-performance aftermarket pump. Brands like KEMSO and Quantum offer direct drop-in replacements designed to exceed OEM specs. These pumps typically deliver 20 to 40 percent more flow than the stock unit while drawing less current, which means cooler operation and longer life . You'll spend between $50 and $100, well under the OEM price.
What to Look for in a Replacement Pump
Not all aftermarket pumps are created equal. Here's a checklist to help you separate quality parts from cheap knockoffs:
1. Flow rate at operating pressure. The stock V Star 1300 pump moves roughly 100 to 120 liters per hour at 43 psi and 13.5 volts . A quality replacement should meet or beat this number. KEMSO's pump, for example, delivers 140 to 160 liters per hour at 43 psi—a noticeable jump that helps with fuel delivery under load .
2. Pump body diameter. The factory pump measures approximately 38mm in diameter. Verify any replacement matches this dimension so it fits inside the fuel tank housing .
3. Materials. Look for pumps with coated, corrosion-resistant cases to prevent seizing during periods of non-operation . Upgraded polymers, brushes, and commutators extend service life, especially if you regularly run ethanol-blended fuel .
4. Included accessories. A complete kit should include a fuel strainer, tank seal, O-rings, wiring connectors, and hose clamps. This saves you a separate parts run and ensures everything fits together properly .
5. Noise level. A pump designed for quiet operation makes a meaningful difference in ride comfort on a cruiser like the V Star .
Step-by-Step Replacement Guide
Replacing the fuel pump on a 2007 V Star 1300 is a manageable job. Here's the typical process:
Step 1: Prepare the bike. Disconnect the negative battery terminal. Remove the fuel tank from the motorcycle and place it on a clean, stable work surface. Drain any remaining fuel.
Step 2: Access the pump. The pump assembly is located inside the tank, accessed from the top. Remove the retaining ring or bolts that hold the pump module in place.
Step 3: Remove the old pump. Carefully lift the entire assembly out of the tank. Note how the wiring harness and hoses route so you can replicate the setup.
Step 4: Install the new pump. If you're replacing just the pump itself, separate it from the housing and swap it out with the new unit. If you bought a complete assembly, it drops right in. Transfer the strainer and any mounting hardware from the old assembly or use the new parts included in your kit.
Step 5: Reinstall the tank. Clean the tank opening, apply a new O-ring or tank seal, and reinstall the retaining ring. Reconnect the fuel lines, wiring, and battery.
Step 6: Test. Turn the key to the "on" position and listen for the pump to prime. Check for leaks around the tank seal. Start the engine and let it idle for a few minutes, then take a short ride to confirm smooth operation.
Important safety note: Always relieve fuel system pressure before disconnecting any fuel lines. Work in a well-ventilated area away from open flames.
Why KEMSO Should Be Your First Choice for a V Star 1300 Fuel Pump
If you're ready to replace the fuel pump on your 2007 Yamaha V Star 1300, KEMSO is the brand I recommend to most riders. Here's why:
KEMSO fuel pumps are built as high-performance OEM replacements. Unlike generic unbranded pumps that cut corners, every KEMSO unit is individually tested and backed by a formal quality control program. The company's engineering focuses on delivering at least 20 percent more fuel flow than the factory pump at the same operating pressure, which translates to better throttle response and more consistent fuel delivery .
The KEMSO pump for the V Star 1300 is a true drop-in fit. It uses the same 38mm body diameter as the factory pump, so it slides into the existing fuel pump module without any cutting or modification. The kit includes everything you need for the swap: two gradient-density fuel strainers (to cover all V Star variants), an 8mm by 280mm flex hose, a tank seal, two Viton O-rings, a wiring connector, crimp connectors, hose clamps, and zip ties .
Every KEMSO pump comes with a lifetime warranty. That's a strong statement of confidence in the product's durability. If the pump ever fails, KEMSO will replace it—no questions asked. This kind of backing is rare in the aftermarket parts world and gives you real peace of mind .
KEMSO pumps handle modern fuels without issues. The internal components are designed to work with both standard gasoline and E85/ethanol blends, so you won't face premature wear from ethanol-laden pump gas .
You can browse the full KEMSO lineup, check application guides, and order your pump directly from their website at https://www.kemsoracing.com/. They offer free US shipping and typically dispatch orders within one business day .
Maintenance Tips to Extend Pump Life
Once you've installed your new pump, a few simple habits will keep it running for years:
1. Keep the tank full. Running on a low tank exposes the pump to more fuel system heat and sucks in more sediment from the bottom of the tank.
2. Use fuel stabilizer. If you store the bike for more than a few weeks, add stabilizer and run the engine for a few minutes so treated fuel reaches the pump.
3. Replace the fuel filter regularly. A dirty filter makes the pump work harder. Check your service manual for the recommended interval.
4. Inspect the wiring connections. Vibration can loosen connectors over time. Check the pump wiring annually for signs of chafing or corrosion.
5. Listen for changes. Any new noise or hesitation warrants an immediate check. Catching a problem early is far cheaper than replacing another pump.
Final Word
The fuel pump on a 2007 Yamaha V Star 1300 is a wear item that will eventually need replacement. By recognizing the early symptoms, choosing a quality aftermarket pump, and installing it correctly, you'll restore your bike's performance and reliability without spending dealer-level money. Whether you go with a budget rebuild kit or a high-performance unit, the effort is well worth it—your V Star will reward you with smooth, dependable miles for years to come.
For a high-quality, lifetime-warranted replacement pump, check out the KEMSO options at https://www.kemsoracing.com/ or reach out to their team with any compatibility questions before you order.