Intake Manifold Interface for Polaris Trail Boss 350L & Big Boss 6x6

Product Overview

Restore the legendary hauling power of your Polaris workhorse with this high-performance Carburetor Intake Manifold Interface. Specifically designed for the Trail Boss 350L and the heavy-duty Big Boss 6x6 350L, this component is the critical link for maintaining engine vacuum. Over years of farm work and trail riding, original boots can dry-rot and crack, leading to lean-running conditions that can seize an engine. This premium replacement features an optimized airflow design to ensure your Polaris delivers consistent torque and horsepower when you need it most.

Product Compatibility

Direct replacement for Polaris 350L liquid-cooled engines. Please verify your vehicle's model year and engine type before ordering.

Brand	Model	Fitment Series	Engine Type
Polaris	Trail Boss 350L	2x4 / 4x4	350cc Liquid-Cooled
Polaris	Big Boss 350L	6x6	350cc Liquid-Cooled
Polaris	Sportsman 350L	4x4	350cc Liquid-Cooled
Polaris	400L / Sport 400	Check Compatibility	400cc Series

Specifications

Feature	Detail
Material	High-Grade Reinforced Synthetic Rubber
Internal Design	Smooth-Bore Wide Runner Technology
Properties	Heat-Resistant, Fuel-Resistant, Anti-Aging
Installation	Direct Bolt-on Replacement
Benefit	Improved Throttle Response & Combustion Efficiency

Key Features

• Optimized High-Flow Airflow: Features an upgraded internal geometry with smoother and wider runners. This design significantly reduces air resistance, allowing for more efficient fuel combustion and a noticeable boost in horsepower.
• Superior Heat-Resistant Design: Manufactured from premium, heavy-duty rubber that resists heat soak. This ensures that the air-fuel mixture remains stable, providing consistent engine performance even during heavy towing or long-duration riding.
• Leak-Proof Vacuum Integrity: Provides a high-tension seal that eliminates air leaks—the number one cause of erratic idling and hard starting in older Polaris 350L models.
• Built for Heavy Duty: Engineered to withstand the extreme vibrations of the Big Boss 6x6 platform, ensuring the rubber won't delaminate or crack under the stress of professional utility use.
• Precision Factory Fit: Mirrors the dimensions of the original equipment for a seamless, "no-modification" installation, getting your ATV back to work in minutes.