International Truck Seats

Get set for a smooth ride with a GRA-MAG aftermarket seat for International truck seats. These aftermarket semi-truck seats bring comfort and durability for those long hauls, giving you support where it counts. A GRA-MAG to replace an International truck seat isn’t just any seat—it’s built for the real road warriors out there. If you’re looking for an upgrade, our seats for International trucks deliver that extra cushion, so you can roll on without those backaches. Ready to roll? Check out our GRA-MAG aftermarket International truck seats for sale and see the difference they can make on the open road.

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GraMag Cloth Aftermarket Seat

MSRP:

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Now: $1,565.00 - $1,715.00
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GraMag Leather Aftermarket Seat

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Now: $1,805.00 - $2,015.00
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GraMag Mid Back Aftermarket Seat

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Now: $1,805.00 - $2,015.00

International Truck Seats Built for the Long Haul

If you've spent any real time behind the wheel of an International, you already know the seat isn't just another part of the cab — it's where you live for hours at a stretch. The right International truck seat can make the difference between ending the day stiff and worn out or stepping out of the cab feeling steady and ready for tomorrow. Whether you're running local routes or stacking long highway miles, a properly fitted seat helps support your back, reduce vibration, and keep fatigue from creeping in when it matters most.

Truck Driver Sitting in the Cab of an International Truck, Focused on the Road

Finding the Right Seat for Your International Truck

From older International Harvester models to newer vocational and highway trucks, seat fit, mounting, and ride quality all matter more than most people realize. A seat that looks fine on paper can feel completely wrong after a ten-hour shift if it doesn't match your cab setup or driving style.

If you're shopping for an International truck seat replacement, it's worth thinking beyond just padding. Suspension type, adjustability, and how the seat handles vibration all play a role in how your body feels at the end of the day. A quality seat for International truck applications should bolt in cleanly, support proper posture, and hold up to daily use without breaking down halfway through the season.

Built To Match Your Cab and Your Driving Style

The best International truck seats for sale fit whoever's behind the wheel. Drivers running an International on regional routes have different needs than someone spending weeks at a time on the interstate. That's why customization matters — not for looks, but for comfort and control where it counts.

With the right setup, you can fine-tune your seat to fit both your body and your truck, whether you're upgrading from a worn factory driver seat or dialing in a new cab interior.

Customization options can include:

Air ride or mechanical suspension configurations
Adjustable lumbar and backrest support
Ergonomic seat cushions to reduce pressure points
Multiple adjustment points, including armrests, seat height, and fore-aft positioning
Upholstery and trim options available by seat model

When It's Time To Replace Your International Truck Seat

Most drivers don't replace a seat until it's long overdue. If you're noticing more aches, less support, or constant readjusting throughout the day, your seat is probably telling you something. Even a well-built seat breaks down over time, especially in high-use vehicles like International pickup trucks and medium-duty rigs.

A fresh aftermarket seat can restore comfort, improve posture, and reduce the fatigue that sneaks up on you mile after mile.

Common signs it's time for a replacement include:

Sagging or uneven seat cushion support
Excessive vibration or bouncing while driving
Limited adjustability or broken controls
Increased back, hip, or leg discomfort
Visible wear that affects comfort or safety

Explore the Best Semi-Truck Seats at GRA-MAG

Browse our full selection of aftermarket semi-truck seats to see what fits your cab and driving needs best. We also offer leather truck seat options and our seats fit other major semi-truck fleets including Freightliner, Kenworths, Peterbilt, and Volvo. Get a seat that's built to keep you comfortable, supported, and focused — mile after mile.

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Frequently Asked Questions About International Truck Seats

Got questions about International truck seats? The following FAQs cover several common questions, but you're welcome to contact us if you need additional information.

Will these GRA-MAG seats fit my International truck?

Yes, GRA-MAG aftermarket seats are engineered to be compatible with many International models, including popular medium-duty and vocational trucks like the International 4300, 4700, and 4900. Because cab designs and mounting points can vary by year and trim, some installations may require an adapter bracket or hardware kit. Check the fitment notes on each product page or contact our team with your truck's details to confirm the best match.

Are these OEM International truck seats?

No, these are GRA-MAG aftermarket seats designed as a direct replacement for an International truck seat. They are not manufactured by or affiliated with Navistar or International, but they are built for professional use and long-term durability. Many drivers choose aftermarket options for added comfort, adjustability, and overall value when replacing worn factory seating.

How do I choose the right International truck seat replacement for my routes and body type?

Start by thinking about how and where you drive. Long-haul drivers often prefer air-ride suspension with enhanced lumbar support, while regional or vocational trucks may benefit from a durable mechanical base with fewer maintenance needs. Cushion support, armrests, cab height, and seatbelt configuration all matter. Taking a few measurements and understanding your daily driving conditions will help narrow down the best option.

How hard is it to install a seat for an International truck?

Most seat replacements can be handled by an experienced DIYer or shop technician using basic tools. Installation usually involves removing the old seat, installing any required adapter bracket, securing the new seat, and reconnecting air or electrical components if equipped. Always follow product instructions and torque specs, and disconnect vehicle power or air systems before starting.

Do you have options specifically for the International 4300 driver seat?

Yes. Many GRA-MAG models are compatible with the International 4300 driver seat position. Fitment depends on model year and cab configuration, so reviewing the product notes is important. If you operate multiple truck brands, you can also compare options across other makes like Freightliner, Kenworth, Peterbilt, and Volvo to keep comfort consistent across your fleet.

Will these seats work in older International Harvester or Lodestar trucks?

Many seats can work in older International Harvester or Lodestar trucks, but these cabs often have unique floorpans and mounting patterns. Adapter brackets and seatbelt considerations are common with older trucks. Sharing photos and basic measurements helps ensure a safe, compatible installation before ordering.

What cushion materials and finishes are available for International truck seats?

Available materials vary by seat model and are made for durability and daily use. Options may include heavy-duty cloth, vinyl, or premium trim selections, paired with high-density foam cushions built to reduce pressure points. Some models also offer added lumbar adjustment, armrests, or heated features for improved comfort over long shifts.