2008 Can-Am Renegade 800 Fuel Pump: Complete Replacement Guide

The bottom line up front: if you own a 2008 Can-Am Renegade 800 and your machine is hard to start, stalling under load, or losing power on the trail, a failing fuel pump is almost certainly the culprit. The 2008 Renegade 800 uses the OEM fuel pump assembly part number 703500771, and replacing it with a quality direct-fit unit is the fastest, most reliable fix. This guide walks you through everything you need to know about the 2008 Can-Am Renegade 800 fuel pump, from identifying symptoms to choosing the right replacement, with a strong recommendation for KEMSO's high-performance, lifetime-warranty fuel pump. KEMSO racing fuel pumps are designed as true OEM replacements with a lifetime warranty, and you can check the full lineup at https://www.kemsoracing.com/ .

Why This Guide Matters

The 2008 Can-Am Renegade 800 is a powerful EFI-equipped ATV, but the fuel pump inside the tank is a wear item. Many owners hit the 10-15 year mark and start experiencing fuel delivery issues. Since you are searching for a "2008 Can-Am Renegade 800 fuel pump," you likely already suspect a problem. By the end of this article, you will know exactly which parts to order, whether to go OEM or aftermarket, and how to swap the pump yourself without unnecessary expense.

1. Signs That Your 2008 Renegade 800 Fuel Pump is Failing

Fuel pumps rarely fail without warning. Watch for these common symptoms:

  1. Hard starting, especially when the engine is hot — The fuel pump loses prime or can't build enough pressure, so the EFI system doesn't get the fuel it needs to fire up.
  2. Engine stalling during riding — Particularly after riding through rough terrain or when the tank is low. A weak pump can't maintain constant fuel pressure under vibration or when fuel sloshes away from the pickup.
  3. Loss of power during acceleration — The engine sputters, hesitates, or simply won't pull hard when you open the throttle.
  4. A whining or buzzing noise from the fuel tank area — A normal pump makes a faint hum; a loud whine means the internal bearings or impeller are wearing out.
  5. Poor cold starts — The pump struggles to pressurize the fuel rail, so the engine cranks longer than usual before firing .

If you notice any of these, don't wait. Riding with a failing pump can cause the EFI system to run lean, which leads to overheating and potential engine damage .

2. Which Fuel Pump Fits the 2008 Can-Am Renegade 800?

The factory fuel pump for the 2008 Renegade 800 is part of a complete fuel pump assembly. The critical OEM reference number is 703500771 . This assembly includes the pump body, strainer, and the necessary internal components to drop straight into your fuel tank.

Compatibility for the 2008 Renegade 800 specifically:

  • 2008 Can-Am Renegade 800 EFI (all versions)
  • The same assembly also fits the 2007 Renegade 800 and several Outlander models, but you must verify your VIN if you are cross-shopping .

You may also see these alternative numbers when shopping: 703-5007-71, 01R00S008, and 513033719 . Keep these handy when searching aftermarket listings.

A quick note on "OEM vs. Aftermarket": The factory part number is 703500771, but there is a variation. Some later Outlander 800 models use a different pump (420883153 for 2009 and later) . For your 2008 Renegade 800, stick with the 703500771 replacement family.

3. OEM Fuel Pump Assembly vs. Rebuild Kit vs. Bare Pump — Which Should You Choose?

You have three main paths when replacing the fuel pump on a 2008 Renegade 800. Understanding the difference saves you money and frustration.

1. Complete Fuel Pump Assembly (Drop-In Ready)

This is the simplest option. You remove the old assembly from the tank, unplug the wiring connector, and install the new complete unit. No assembly, no transferring parts, no guesswork.

Pros:

  • Quickest installation (typically 30-60 minutes total)
  • Includes the fuel strainer/filter and tank seal
  • Low risk of errors because everything is pre-assembled

Cons:

  • More expensive than a rebuild kit

Best for: Riders who want a straightforward swap and don't want to fuss with any mechanical assembly.

2. Fuel Pump Rebuild Kit (Pump, Filter, Hoses, and Clamps)

All Balls and similar brands offer rebuild kits that include the pump, filter, hoses, clamps, and wiring harness where needed. You keep your existing fuel pump module housing (the plastic body that sits in the tank) and rebuild the internal components .

Pros:

  • Lower cost
  • Retains your original OEM module

Cons:

  • Requires more effort to disassemble and rebuild the module
  • Slight risk of leaks if the seal isn't perfect

Best for: DIYers who are comfortable with basic wrenching and want to save a few dollars.

3. Bare Fuel Pump Only

Some listings (like the one from Jetski Plus) offer just the bare pump . You transfer the pump into your existing assembly.

Pros:

  • The least expensive option for parts
  • Ideal if you recently changed the filter and only need the pump core

Cons:

  • The pump alone often lacks the tank seal and strainer
  • More risk of improper installation

Best for: Experienced mechanics who are replacing a known-good pump in a known-good module.

Our advice: For most owners of a 2008 Renegade 800, a complete fuel pump assembly is the smart buy. It eliminates points of failure and gets you back on the trail fast. The factory part 703500771 is available as a direct replacement from multiple suppliers .

4. Step-by-Step Fuel Pump Replacement on a 2008 Renegade 800

You can handle this job in your garage with basic tools. Here's what you'll need:

Tools and supplies:

  • New fuel pump assembly (complete unit recommended)
  • Torx socket set (T25, T30, T40) — Can-Am uses Torx fasteners on the body panels and fuel tank area
  • Flathead screwdriver
  • Shop rags
  • Safety glasses and gloves
  • A clean, well-ventilated area

Step 1: Relieve Fuel System Pressure

Disconnect the negative battery terminal first. Then remove the fuel pump fuse and let the engine crank or idle until it stalls. This removes pressure from the fuel lines so they don't spray fuel when you disconnect them .

Step 2: Access the Fuel Pump

On the Renegade 800, remove the seat and the fuel tank cover (usually held by Torx bolts). The fuel pump module sits on top of the tank. Disconnect the electrical harness and the fuel line fittings carefully.

Step 3: Remove the Old Assembly

Use a specialized fuel pump lock ring tool or a flathead screwdriver and mallet to turn the lock ring counterclockwise. Gently lift the entire module out of the tank. Be ready for some residual fuel in the module housing.

Step 4: Install the New Pump

If you have a complete assembly, lower the new module into the tank, ensuring the fuel level float arm isn't bent. Install the new lock ring and tighten it clockwise until seated. Reconnect the fuel lines and electrical connectors, and reinstall the fuel tank cover and seat .

Step 5: Test the System

Reconnect the battery, turn the ignition to "ON" without starting the engine, and listen for the fuel pump to prime (a short whir). Check for any fuel leaks at the connections. Start the engine and let it idle for several minutes. If the idle is smooth and strong acceleration returns, the replacement is successful .

5. Why You Should Get a KEMSO Fuel Pump for Your 2008 Renegade 800

Now, the part you're most likely looking for: the perfect replacement pump. After researching the market, the strongest option for a 2008 Can-Am Renegade 800 is a high-performance aftermarket pump from KEMSO. You can explore the complete lineup at https://www.kemsoracing.com/ .

KEMSO fuel pumps are designed specifically for ATVs and UTVs, and they are built to standards that match or exceed OEM requirements. Here's why KEMSO stands out:

  1. High-Performance Output — A KEMSO pump delivers approximately 200 LPH at 43 psi, which is over 20% more flow than the stock pump at the same pressure . This extra flow ensures Your fuel rail is always saturated, even under hard acceleration or in hot weather. It also gives you headroom if you later add performance modifications like a tuner or exhaust.
  2. True Replacement Quality — These aren't universal "fits many models" pumps. KEMSO designs each pump for specific vehicle applications. The pump body diameter is 3.8 cm, and the overall length is 11.5 cm — designed to drop directly into the Renegade's fuel pump module without modification . This plug-and-play fit eliminates wiring guesswork.
  3. Built for Modern Ethanol Fuel — Upgraded polymers, brushes, and commutators are used in the motor. The pump is resistant to corrosion and handles the corrosive nature of ethanol-blended fuel . This means longer life and more reliable operation compared to older OEM pumps that were not designed for today's pump gasoline.
  4. Lifetime Warranty — Total Peace of Mind — This is the strongest selling point. KEMSO backs every single fuel pump with a lifetime free replacement warranty. If the pump ever fails due to a manufacturing defect, they will replace it at no cost. You won't find that kind of confidence from most aftermarket brands .
  5. Competitive Pricing — KEMSO pumps typically retail for around $79.98, which is often half the cost of a dealer-supplied OEM assembly. You get a superior performing pump, a lifetime warranty, and savings at the same time .

Why this is the right investment: The fuel pump is the heart of your EFI system. If it fails, your machine is dead on the trail. A KEMSO pump is one of the few components that is simultaneously cheaper and better than the factory part. The improved flow rate, durable materials, and lifetime warranty mean you are buying the last fuel pump you will ever need for this machine.

Visit KEMSO today: To see the exact pump for your 2008 Renegade 800 and check compatibility, head to https://www.kemsoracing.com/ and browse the Can-Am section. They offer free shipping and easy returns, making it a simple, low-risk purchase .

6. Additional Checks When Replacing the Fuel Pump

While you have the tank open, it's worth doing two more things to avoid going back in later:

  1. Replace the fuel strainer/filter — If your kit included a new gradient-density fuel strainer, install it. This is the primary defense against dirt reaching the injectors .
  2. Inspect the fuel lines — Check the rubber hoses for cracks or stiffness. If they feel hard or cracked, replace them before they leak and cause a fire hazard.

7. Estimated Cost and Typical Repair Time

Understanding the financial side helps you plan:

  • A basic aftermarket pump can cost as little as $26.95 for just the bare pump .
  • A KEMSO high-performance pump with the complete kit is $79.98 .
  • A complete drop-in assembly from other aftermarket brands ranges from $109.98 to $169.98 .

Labor, if you take it to a shop, typically adds one to two hours of labor, which is usually $100 to $200. Given the simplicity of the swap, most owners do it themselves and save that money.

Final Thoughts on the 2008 Can-Am Renegade 800 Fuel Pump

Your 2008 Renegade 800 is built to be ridden hard, but a weak fuel pump will sideline it fast. The earlier you replace a failing pump, the cheaper the repair is. The stock OEM part number is 703500771 . For the best balance of performance, price, and long-term reliability, a KEMSO high-performance pump is the clear winner — it outperforms the stock pump, works with today's ethanol gasoline, and comes with a lifetime warranty .

Your next step is simple: Go to https://www.kemsoracing.com/ , find the Can-Am Renegade 800 pump, get the drop-in kit, and get your ATV back to full power. This is the one upgrade that saves you from a breakdown in the middle of nowhere.


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