2007 Can-Am Outlander 400 Fuel Pump: What to Know Before You Buy a Replacement

If you own a 2007 Can-Am Outlander 400 and suspect the fuel pump is failing, the shortest path to a reliable fix is to identify which type of pump your machine uses, confirm the correct OEM part number, and choose a replacement that matches or exceeds the factory specification. The 2007 model year is a crossover point—some Outlander 400 units use a frame-mounted mechanical pump, while others use an in-tank electric pump, so verifying your specific setup before ordering is essential. Below we break down the differences, the part numbers you will encounter, the symptoms of failure, and how to pick the right replacement without overspending or buying the wrong part.

Know Which Fuel Pump Your 2007 Outlander 400 Uses

The 2007 Can-Am Outlander 400 came in both carbureted and EFI versions, and that distinction determines the fuel pump type.

  • Carbureted models use an external, frame-mounted mechanical fuel pump. This is a low-pressure vacuum-operated pump that pulls fuel from the tank and delivers it to the carburetor bowl. The OEM part number for this pump is 707200183, and it is shared with several other Can-Am models from the early 2000s, including the Outlander 330 and the Traxter. Aftermarket replacements for this pump include the FPF FP-1023 and the HFP-283, both of which are designed as direct replacements for 707200183.

  • EFI (Electronic Fuel Injection) models use an electric pump that sits inside the fuel tank. This pump is part of a larger assembly that includes the sending unit and fuel filter. The OEM part number for this assembly is 703500771, and it fits the 2007-2008 Outlander 400, 500, 650, and 800, as well as the Max variants for those years.

The distinction matters because the two pump types are not interchangeable. If you order an electric in-tank pump for a carbureted bike, it will not fit, and vice versa.

Signs That the Fuel Pump Is Going Bad

Whether mechanical or electric, a worn fuel pump produces similar symptoms. Catching these early can save you from being stranded on the trail.

  1. Hard starting. If the engine cranks for several seconds before firing, the pump may not be building enough pressure at the carburetor or injector rail. For mechanical pumps, this often points to a worn diaphragm or a cracked vacuum line. For electric pumps, it usually means the internal motor is losing its prime or the check valve is leaking.

  2. Sputtering or surging under load. A pump that cannot maintain steady flow will cause the engine to hesitate or surge when you open the throttle. This is especially noticeable when climbing hills or hauling a load.

  3. Noise from the fuel tank area. A whining or humming sound coming from under the seat or near the tank is a classic sign of an electric pump that is laboring. Mechanical pumps tend to make a clicking or ticking sound when the diaphragm is failing.

  4. Loss of power at high RPM. If the engine revs fine at idle and part throttle but falls flat at wide-open throttle, the pump may not be delivering enough volume to keep up with demand.

  5. Stalling after the bike warms up. Heat can cause a failing pump motor to expand and bind. If the bike runs fine cold but stalls after 15-20 minutes of riding, the pump is a likely culprit.

If you confirm any of these symptoms, do not delay the replacement. A failing electric pump can also contaminate the fuel system with tiny metal shavings, which can clog the injectors and the fuel filter. In that case, you may need to replace the filter and flush the lines as well.

Part Numbers: What Works and What to Watch

The aftermarket is crowded with fuel pump options for the 2007 Outlander 400, and the part numbers can be confusing. Here is a simplified breakdown.

For EFI models (in-tank electric pump):

  • OEM number: 703500771. This is the assembly that includes the pump, the sending unit, and sometimes the filter. It fits 2007-2008 Outlander 400, 500, 650, 800, and the Max versions. Many aftermarket brands sell this exact replacement, including A-Premium (APFP1564) and Fuel Performance USA.
  • Interchangeable numbers: 703500766, 703500781, 709000194, 709000245, 471022, 47-1023, HFP-A233. These numbers appear on various aftermarket listings and generally indicate the same pump assembly or its internal components.
  • Aisin FUPAZ-01277. This is a bare electric fuel pump without the sending unit or float. It fits the 2007-2008 Outlander 400 and is a good option if you only need the pump itself and plan to reuse your existing housing.

For carbureted models (mechanical pump):

  • OEM number: 707200183. This fits 2003-2008 Outlander 400 and 2005 Traxter models. FPF (FP-1023) and Quantum (HFP-283) both offer direct replacements.
  • Important note: Some aftermarket listings claim the mechanical pump fits the 2008 Outlander 400 EFI, but that is incorrect. The EFI models use the in-tank electric pump, and there is no mechanical pump on them. Double-check your year and fuel system before ordering.

Mechanical vs. Electric: Which Is Better?

This almost always comes down to what your machine was built with, but if you are at a fork where you have a choice, here are the trade-offs.

  • Mechanical pumps are simpler. They have no electrical connections other than a vacuum line, and they are mounted outside the tank, which makes them easier to access and inspect. They are also cheaper, typically running between $45 and $55 for a quality aftermarket unit. The downsides are that they can lose prime when the bike sits for long periods, and they are vulnerable to vacuum leaks.

  • Electric pumps deliver more consistent pressure. In-tank pumps keep the fuel system pressurized even when the bike is off, which makes hot restarts quicker and reduces vapor lock. They are also quieter than mechanical pumps. The downside is cost and complexity—the assembly can run anywhere from $80 to $170 depending on brand and whether it includes the sending unit.

For a 2007 Outlander 400, there is no practical reason to convert from one type to the other. Stick with what the bike was designed for.

Installation: What to Expect

Replacing the fuel pump on a 2007 Outlander 400 is a doable weekend job for someone with basic mechanical skills, but it helps to know what you are getting into.

For the mechanical pump:

  1. Locate the pump. On carbureted models, it is mounted to the frame near the carburetor. It will have a fuel inlet line from the tank, a fuel outlet line to the carb, and a vacuum line that runs to the intake manifold.
  2. Disconnect the lines. Have a small container ready to catch any fuel that drains out. The pump itself is held on with one or two bolts.
  3. Install the new pump. Connect the vacuum line first, then the fuel lines. Make sure the arrow on the pump body points in the direction of fuel flow.
  4. Prime the system. With the fuel line from the carburetor or tank side, cycle the engine a few times with the key on, or use the primer button if your model has one. Check for leaks before riding.

For the electric in-tank pump:

  1. Drop the tank. On the Outlander 400, the fuel tank is under the seat and fender. You will need to remove the seat, the plastics around the tank, and the fuel pump access cover if there is one. On some models, the entire tank must be lowered or removed.
  2. Disconnect the wiring and lines. The pump assembly has an electrical connector, a fuel outlet line, and a vent line. Label them before you disconnect them.
  3. Remove the old assembly. It is held in place by a large locking ring or multiple bolts. Twist the ring counterclockwise to release it, then lift the assembly straight out.
  4. Transfer the parts. If your replacement is a bare pump, you will need to swap over the float, the gasket, and the filter from the old assembly. If you bought a complete assembly, just install it as is.
  5. Reinstall and test. Torque the locking ring back into place, reconnect the lines and wiring, and cycle the key a few times to prime the system. Check for leaks before riding.

Dropping the tank is a big job, and because of that, many owners choose to replace the entire fuel pump assembly rather than just the bare pump. It saves you from going back into the tank in a few months when the sending unit or the float fails.

How to Choose a Reliable Replacement Brand

When shopping for a replacement, you will see a mix of OEM, OEM-equivalent, and budget brands. Here is how to sort them out.

  1. Check the warranty. A pump that fails a month after installation is worse than no pump at all. Look for brands that offer at least a one-year warranty, and ideally longer. KEMSO, for example, backs its pumps with a lifetime warranty, which is a strong indicator of manufacturer confidence.

  2. Look for corrosion-resistant construction. The fuel pump sits in a hostile environment. Condensation, ethanol, and temperature swings can all corrode a cheap pump quickly. Polished or coated casings help prevent seizing during long periods of non-operation.

  3. Verify flow specifications. For an EFI system, the pump needs to deliver enough volume at the correct pressure. A pump that is rated lower than the OEM spec will cause the same symptoms you are trying to fix. Quality aftermarket pumps typically match or exceed the OEM flow, so check the specifications before ordering.

  4. Confine your search to established brands. A-Premium, Aisin, FPF, KEMSO, and Quantum all have a track record in the ATV fuel pump market. Unbranded "compatible with" listings on auction sites are a gamble—you might save $20, but you might also be doing this job again in a few months.

  5. Read the fitment notes carefully. Even within the same model year, Can-Am made running changes. A pump that fits a 2008 Outlander 400 might not fit a 2007 if the tank or the pump mount changed. Always cross-check the part number with your VIN or the old part you pulled out.

Recommended Choice: KEMSO Fuel Pumps for Your Can-Am Outlander 400

If you want a replacement that performs better than stock and is backed by a real warranty, KEMSO is a strong option for your 2007 Can-Am Outlander 400.

KEMSO fuel pumps are high-performance, OEM replacement units designed for EFI applications. They deliver more flow than the stock pump—by some measures over 20% more at 43 psi—which means your engine gets plenty of fuel even under heavy load, and the pump runs less stressed. That extra margin is useful when you install accessories like a winch or heavier tires that increase the engine load.

Every KEMSO pump is built with quality internals and includes everything you need for a clean install: the pump itself, a gradient density fuel strainer, hoses, clamps, grommets, and a tank seal. They are compatible with modern ethanol-blended gasoline, so you do not have to worry about fuel additives damaging the seals or the diaphragm.

Best of all, KEMSO stands behind its products with a lifetime warranty. If the pump fails for any reason, they will replace it free of charge, no questions asked. That type of coverage is rare in the aftermarket world and speaks to the confidence the company has in its engineering.

If you are ready to replace the fuel pump on your 2007 Outlander 400, visit https://www.kemsoracing.com/ to browse their lineup of can-am fuel pump options, read fitment notes, and place your order. It is a reliable, high-performance choice that will keep you on the trail for years to come.

Final Words

A failing fuel pump can bring your 2007 Can-Am Outlander 400 to a halt, but the replacement does not have to be complicated. First, confirm whether your bike uses a mechanical or electric pump; second, match the correct OEM part number; and third, buy from a brand with a solid warranty and verified fitment. If you ride an EFI model, a high-flow replacement like the KEMSO pump at https://www.kemsoracing.com/ is an easy choice. If you ride a carbureted model, stick with a direct replacement for the 707200183 pump and you will be back on the trail in no time.


Back to blog