Carburetor replacements for older Yamaha utility quads have shifted from rare OEM searches to accessible aftermarket kits. I have compared these options and read through extensive buyer feedback to rank them. Let us see how the top two choices face off in my honest review.
| Best For | Product | Name | Score | |
|---|---|---|---|---|
| all-inclusive Maintenance Bundle |  |
YFM660 Carburetor Carb fit for Yamaha Grizzly 660 YFM660 2002-2008, Yamaha Grizzly 600 YFM600 1998-2001 with Fuel Switch Valve Oil Filter & Spark plug | 9.8/10 | View on Amazon |
| complete Intake Overhaul |  |
YFM660 Carburetor Carb kit for Yamaha Grizzly 660 YFM660 2002-2008 4-Stroke Engine ATV Carburetor PD42J 42mm,including Air Filter+Intake Manifold Carburetor Boot Joints | 8.2/10 | View on Amazon |
1. YFM660 Carburetor Carb fit for Yamaha Grizzly 660 YFM660 2002-2008, Yamaha Grizzly 600 YFM600 1998-2001 with Fuel Switch Valve Oil Filter & Spark plug
This unit earned its ranking through sheer utility, combining the core carburetor with a fuel switch valve, oil filter, and spark plug. I see this as the ultimate convenience package for routine overhauls.
You get multiple tune-up components in one box, which saves you from ordering separate parts. My view is that you sacrifice a bit of specific tuning documentation for this broad component spread.
Buyers frequently mention that having the extra fuel switch and spark plug included makes a complete weekend tune-up much easier.
Some users note that the idle mixture screw may require minor adjustments out of the box for proper altitude tuning.
Reviewers appreciate the inclusion of an oil filter alongside the main carburetor assembly.
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2. YFM660 Carburetor Carb kit for Yamaha Grizzly 660 YFM660 2002-2008 4-Stroke Engine ATV Carburetor PD42J 42mm,including Air Filter+Intake Manifold Carburetor Boot Joints
This kit is best for riders who need a complete intake overhaul alongside their fuel delivery fix. I rank this package at the top because it addresses cracked rubber boots that often ruin idle performance.
You receive a matched 42mm PD42J carburetor, an air filter, and intake manifold boot joints. In my opinion, fixing air leaks at the boot is just as important as cleaning out the fuel jets.
Owners consistently report that replacing the old intake boot alongside the carburetor solves persistent air leak issues.
The inclusion of a matching air filter receives praise from buyers who want a total system refresh.
A few users point out that proper synchronization of the dual-part setup requires patience during installation.
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Choosing Between Them
My top recommendation is the YFM660 PD42J kit with intake boots for your complete intake overhaul, as it addresses the common air leak problems plaguing older engines. If your machine simply needs a broader tune-up with extra ignition and filtration hardware, the maintenance bundle with fuel switch suits that general service approach.
Replacement carburetors of this class often require minor jetting tweaks to match your specific local climate and altitude. You should expect to spend a little time dialing in the idle mixture for optimal throttle response after the initial mechanical installation.
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