YFM350 Carburetor Replacement Kit for Yamaha 350/400 - Reliable Fit

In this review of the YFM350 Carburetor Replacement Kit the bottom line is simple: it is a practical, budget-friendly replacement for several older Yamaha ATV models and a good option for owners who need a full carb kit rather than a single part. The kit replaces carburetors for a range of Yamaha Moto-4, Warrior, Big Bear, Kodiak and Wolverine 350/400 models and includes an intake manifold, air filter and other accessories, which makes it appealing for DIY mechanics who want a mostly complete swap without sourcing multiple parts separately.

Key Features

• Model Compatibility: Covers a broad set of Yamaha ATVs from the late 1980s through early 2000s, reducing the chance of multiple returns when fitting older machines.
• Complete Kit: Ships with one carburetor, intake manifold, spark plug, air filter, intake boot and screw package so installers get most items needed for a straightforward swap.
• Measured Fit: The kit lists precise diameters for the intake manifold side and air filter side, helping users confirm physical compatibility before purchase.
• Fuel Management: The carburetor is built to mix fuel and air consistently, which helps alleviate lean or rich running issues when properly tuned.
• Warranty Support: A 12-month after-sales warranty gives buyers a clear path for help if parts arrive damaged or fail early.

Who It's For

This kit is best for owners of compatible Yamaha ATVs who need a full replacement carburetor and prefer receiving the majority of installation parts in one package. It suits mechanically capable riders who can verify the listed manifold and filter diameters and can perform basic carb adjustment after installation.

It is less appropriate for someone who needs a perfect OEM match out of the box or who cannot tune a carburetor; some customers reported fit issues and tricky screw threading so shops or experienced DIYers are a safer bet if precise factory fit and finish are essential.

Pros & Cons

Pros

• Good value: includes multiple accessories so buyers do not need to source small parts separately.
• Wide compatibility: replaces carbs for many Yamaha 350 and 400 models spanning several years.
• Clear dimensions: published inner and outer diameters let users check fit before installation.

Cons

• Mixed quality reports: some customers experienced leakage, screw threading problems or required additional tuning to achieve ideal performance.
• May not fit every year/model without minor adjustment; verify measurements carefully to avoid compatibility issues.

Specifications

Brand	ATRACYPART
Compatible Models	Moto-4 350, Warrior 350, Big Bear 350, Kodiak 400, Wolverine 350 (listed years)
Intake Manifold Side	Inner 36mm (1.41in) / Outer 40mm (1.57in)
Air Filter Intake Side	Inner 47mm (1.85in) / Outer 50mm (1.96in)
Package Contents	Carburetor, intake manifold, spark plug, air filter, intake boot, screw package, oil filters and accessories
Warranty	12 months after-sales warranty

Our Verdict

The ATRACYPART YFM350 carb kit is a sensible, cost-effective choice for owners of older Yamaha ATVs who want a largely complete replacement delivered in one box. It offers good value and clear fit dimensions, but buyers should be prepared to perform adjustments and to verify fit for late-model variants; it is recommended for DIY mechanics and repair shops rather than strictly OEM-seekers.

Frequently Asked Questions

Will this carb fit my 1998 Big Bear 350?
Check the listed intake and filter diameters against your bike; some customers reported fit problems with certain 1998 models so physical verification is advised.

Does the kit include everything for installation?
The package includes the carburetor, intake manifold, spark plug, air filter, intake boot and a screw package plus some accessories, but you may still need gaskets or tuning tools depending on your project.

What if the carb leaks or arrives damaged?
The product carries a 12-month warranty and the seller provides after-sales support to help resolve early failures or shipping damage.