GOOFIT
Intake Manifold Interface for Polaris Trail Boss 350L & Big Boss 6x6
Intake Manifold Interface for Polaris Trail Boss 350L & Big Boss 6x6
Couldn't load pickup availability
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.
Share
Fitment FAQ
Will this part fit my specific model and year?
This intake manifold is intended for Direct replacement for Polaris 350L liquid-cooled engines. Please verify your vehicle's model year and engine type before ordering.; Fitment Series; Engine Type; Polaris; Trail Boss 350L; 2x4 / 4x4; 350cc Liquid-Cooled. Key physical/spec details from the product data include 350cc, 400cc. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this intake manifold, also compare the bolt spacing, intake port shape, carb-side inner diameter, vacuum nipple position, and gasket shape. This is especially important for Polaris models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this intake manifold for machines outside the listed compatibility, or for units with different port shapes, bolt spacing, carb-side diameter, or vacuum nipple locations. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the bolt spacing, intake port shape, carb-side inner diameter, vacuum nipple position, and gasket shape. Recheck listed specs such as 350cc, 400cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.