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Seats Base Adapters & Covers

We offer a wide range of premium semi-truck seating options from industry leaders like Bostrom, Seats Inc., and Knoedler. Elevate your driving experience with our luxurious choices, including air ride, legacy, and aftermarket truck seats, all designed for maximum comfort during long hauls. Whether you drive a Peterbilt, Kenworth, Freightliner, or any major make, we have a variety of seats to choose from.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Bostrom Gray Ultra-Leather Wide Ride+Serta HiPro Suspension Hi Back Seat W/ Heat & 16 Inch Armrests, Air Lumbar Support

    Bostrom Gray Ultra-Leather Wide Ride+Serta HiPro Suspension Hi Back Seat W/ Heat & 16 Inch Armrests, Air Lumbar Support

    BOSTROM TRUCK SEATS

    $2,166.99
    Gray Ultra-Leather Wide Ride +Serta HiPro Suspension Hi Back W/ Heat & Armrests* High Quality Seat* Wide Ride * Serta Hipro Base * High Back * Gray * Ultra-Leather* Dual 16 Inch Armrests And Seat...
    5300011902
    SKU:
    5300011902
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Ultra Leather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $2,166.99
    Qty in Cart: 0
    Price:
    $2,166.99
    Subtotal:
  • Bostrom Black Ultra-Leather Wide Ride +Serta HiPro Suspension Hi Back Seat W/ Heat & 16 Inch Armrests, Air Lumbar Support

    Bostrom Black Ultra-Leather Wide Ride +Serta HiPro Suspension Hi Back Seat W/ Heat & 16 Inch Armrests, Air Lumbar Support

    BOSTROM TRUCK SEATS

    $2,168.99
    Black Ultra-Leather Wide Ride +Serta HiPro Suspension Hi Back W/ Heat & Armrests* High Quality Seat* Wide Ride * Serta Hipro Base * High Back * Black * Ultra-Leather* Dual 16 Inch Armrests And Seat...
    5300011900
    SKU:
    5300011900
    Truck Class:
    Heavy Duty
    Color:
    Black
    Style Options:
    High Back
    Material Options:
    Ultra Leather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $2,168.99
    Qty in Cart: 0
    Price:
    $2,168.99
    Subtotal:
  • Bostrom Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests - Red/Tan Ultra-Leather

    Bostrom Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests - Red/Tan Ultra-Leather

    BOSTROM TRUCK SEATS

    $1,980.99
    Red/Tan Ultra-Leather Wide Ride +Serta HiPro Suspension Hi Back W/ Armrests* High Quality Seat* Made Of Ultra Leather* 16 Inch* Wide Ride* Std Base* High Back* Bellow Style Suspension Cover* Dual...
    5300001N02
    SKU:
    5300001N02
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Ultra Leather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,980.99
    Qty in Cart: 0
    Price:
    $1,980.99
    Subtotal:
  • Bostrom Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests - Black/Gray Titan Cloth

    Bostrom Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests - Black/Gray Titan Cloth

    BOSTROM TRUCK SEATS

    $1,778.99
    Black/Gray Titan Cloth Wide Ride +Serta HiPro Suspension Hi Back W/ ArmrestsThis Serta Wide Ride Seat features a standard base with a high back and dual armrests in black/gray Endura cloth. It...
    5300001L84
    SKU:
    5300001L84
    Color:
    Black
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,778.99
    Qty in Cart: 0
    Price:
    $1,778.99
    Subtotal:
  • Bostrom Black/Gray Ultra-Leather Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests

    Bostrom Black/Gray Ultra-Leather Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests

    BOSTROM TRUCK SEATS

    $1,977.99
    Black/Gray Ultra-Leather Wide Ride +Serta HiPro Suspension Hi Back W/ ArmrestsThis seat's ultra leather and bellow style suspension cover provides ultimate comfort. With dual chamber air lumbar...
    5300001L77
    SKU:
    5300001L77
    Color:
    Black
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Ultra Leather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,977.99
    Qty in Cart: 0
    Price:
    $1,977.99
    Subtotal:
  • Bostrom Black Endura Cloth Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests

    Bostrom Black Endura Cloth Wide Ride +Serta HiPro Suspension High Back Seat W/ Armrests

    BOSTROM TRUCK SEATS

    $1,666.99
    Black Endura Cloth Wide Ride +Serta HiPro Suspension Hi Back W/ ArmrestsThis Wide Ride Serta Seat features dual 16-inch armrests, a bellow style suspension cover, dual chamber air lumbar support, and...
    5300001K85
    SKU:
    5300001K85
    Color:
    Black
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,666.99
    Qty in Cart: 0
    Price:
    $1,666.99
    Subtotal:
  • National Captain Seat Cushion Replacement - Blue Mordura Cloth

    National Captain Seat Cushion Replacement - Blue Mordura Cloth

    NATIONAL SEATING

    $229.99
    Blue Mordura Cloth National Captain Seat Cushion ReplacementDo you have a Captain Seat by National Seating that needs a new bottom cushion? Since the Captain seat has a two part cushion and a small...
    51200500R
    SKU:
    51200500R
    Truck Class:
    Heavy Duty
    Color:
    Blue
    Material Options:
    Cloth
    Make:
    Universal Items
    Product Type:
    Seats
    $229.99
    Qty in Cart: 0
    Price:
    $229.99
    Subtotal:
  • National Semi-Truck Seat - Ensign Standard Base Mid-Back Air W/ Armrests - 2 Tone Black & Gray

    National Semi-Truck Seat - Ensign Standard Base Mid-Back Air W/ Armrests - 2 Tone Black & Gray

    NATIONAL SEATING

    $751.99
    Ensign HiPro 95 Air Suspension Mid-Back Air Lumbar Seat With Dual ArmrestsAre you looking for an affordable mid-back suspension seat that provides great support? 4 State offers this quality Ensign...
    51113396
    SKU:
    51113396
    Truck Class:
    Heavy Duty
    Color:
    Black
    Style Options:
    Mid Back
    Make:
    Universal Items
    Material Options:
    Vinyl
    Type Options:
    Standard Base
    Product Type:
    Seats
    $751.99
    Qty in Cart: 0
    Price:
    $751.99
    Subtotal:
  • Black & Medium Gray 2 Tone Mordura Cloth Engsign Air Mid-Back Driver Seat Standard Base W/ Bellows, & W/O Arm Rests & Back Cycler

    Black & Medium Gray 2 Tone Mordura Cloth Engsign Air Mid-Back Driver Seat Standard Base W/ Bellows, & W/O Arm Rests & Back Cycler

    NATIONAL SEATING

    $768.99
    2 Tone Mordura Cloth Engsign Air Seat Black & Medium Gray* High Quality Seat* Ensign* Medium Gray* Made Of Vinyl* Mid Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows*...
    51113096
    SKU:
    51113096
    Truck Class:
    Heavy Duty
    Color:
    Black
    Style Options:
    Mid Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $768.99
    Qty in Cart: 0
    Price:
    $768.99
    Subtotal:
  • National Semi-Truck Seat - Ensign Standard Base High Back Air W/ Armrests - Black Vinyl & Gray Mordura Cloth

    National Semi-Truck Seat - Ensign Standard Base High Back Air W/ Armrests - Black Vinyl & Gray Mordura Cloth

    NATIONAL SEATING

    $748.99
    Ensign HiPro 95 Air Suspension Hi-Back Air Lumbar Seat With Dual ArmrestsThe Ensign Air Seat provides ultimate comfort and support with its high back and standard base. Equipped with armrests and a...
    51112396
    SKU:
    51112396
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    Ready To Ship:
    Yes
    $748.99
    Qty in Cart: 0
    Price:
    $748.99
    Subtotal:
  • Black & Medium Gray 2 Tone Mordura Cloth Engsign Air High Back Driver Seat Standard Base W/ Bellows, & W/O Arm Rests & Back Cycler

    Black & Medium Gray 2 Tone Mordura Cloth Engsign Air High Back Driver Seat Standard Base W/ Bellows, & W/O Arm Rests & Back Cycler

    NATIONAL SEATING

    $632.99
    2 Tone Mordura Cloth Engsign Air Seat Black & Medium Gray* High Quality Seat* Ensign* Medium Gray* Made Of Vinyl* High Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows*...
    51112096
    SKU:
    51112096
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $632.99
    Qty in Cart: 0
    Price:
    $632.99
    Subtotal:
  • National Ensign Mid-Back Air Seat W/ Armrests - Black Vinyl

    National Ensign Mid-Back Air Seat W/ Armrests - Black Vinyl

    NATIONAL SEATING

    $669.99
    Ensign Air Standard Seat Rascal Black Vinyl* High Quality Seat* Ensign* Rascal Black* Made Of Vinyl* Mid Back* Standard Base* With Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51111305
    SKU:
    51111305
    Truck Class:
    Heavy Duty
    Style Options:
    Mid Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $669.99
    Qty in Cart: 0
    Price:
    $669.99
    Subtotal:
  • National Ensign Mid-Back Air Seat W/ Armrests - Opal Gray Vinyl

    National Ensign Mid-Back Air Seat W/ Armrests - Opal Gray Vinyl

    NATIONAL SEATING

    $680.99
    Ensign Air Standard Seat Opal Gray Vinyl* High Quality Seat* Ensign* Opal Gray* Made Of Vinyl* Mid Back* Standard Base* With Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51111301
    SKU:
    51111301
    Truck Class:
    Heavy Duty
    Style Options:
    Mid Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $680.99
    Qty in Cart: 0
    Price:
    $680.99
    Subtotal:
  • National Ensign Mid-Back Air Seat - Black Cloth

    National Ensign Mid-Back Air Seat - Black Cloth

    NATIONAL SEATING

    $595.99
    Ensign Air Standard Seat Black Forever Cloth* High Quality Seat* Ensign* Black* Forever Cloth* Mid Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51111035
    SKU:
    51111035
    Truck Class:
    Heavy Duty
    Style Options:
    Mid Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $595.99
    Qty in Cart: 0
    Price:
    $595.99
    Subtotal:
  • National Ensign Mid-Back Air Seat - Gray Cloth

    National Ensign Mid-Back Air Seat - Gray Cloth

    NATIONAL SEATING

    $651.99
    Ensign Air Standard Seat Gray Forever Cloth* High Quality Seat* Ensign* Gray* Forever Cloth* Mid Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51111031
    SKU:
    51111031
    Truck Class:
    Heavy Duty
    Style Options:
    Mid Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $651.99
    Qty in Cart: 0
    Price:
    $651.99
    Subtotal:
  • National Ensign Mid-Back Air Seat - Rascal Black Vinyl

    National Ensign Mid-Back Air Seat - Rascal Black Vinyl

    NATIONAL SEATING

    $573.99
    Ensign Air Standard Seat Rascal Black Vinyl* High Quality Seat* Ensign* Rascal Black* Made Of Vinyl* Mid Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows* Without Back...
    51111005
    SKU:
    51111005
    Truck Class:
    Heavy Duty
    Style Options:
    Mid Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $573.99
    Qty in Cart: 0
    Price:
    $573.99
    Subtotal:
  • National Ensign Standard Base Mid-Back Air Seat - Opal Gray Vinyl

    National Ensign Standard Base Mid-Back Air Seat - Opal Gray Vinyl

    NATIONAL SEATING

    $623.99
    Ensign Air Standard Seat Opal Gray Vinyl* High Quality Seat* Ensign* Opal Gray* Made Of Vinyl* Mid Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51111001
    SKU:
    51111001
    Truck Class:
    Heavy Duty
    Style Options:
    Mid Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $623.99
    Qty in Cart: 0
    Price:
    $623.99
    Subtotal:
  • National Ensign High Back Air Seat W/ Armrests- Rascal Black Vinyl

    National Ensign High Back Air Seat W/ Armrests- Rascal Black Vinyl

    NATIONAL SEATING

    $681.99
    Ensign Air Standard Seat Rascal Black Vinyl* High Quality Seat* Ensign* Rascal Black* Made Of Vinyl* High Back* Standard Base* With Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51110305
    SKU:
    51110305
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $681.99
    Qty in Cart: 0
    Price:
    $681.99
    Subtotal:
  • National Ensign High Back Air Seat W/ Armrests - Gray Vinyl

    National Ensign High Back Air Seat W/ Armrests - Gray Vinyl

    NATIONAL SEATING

    $659.99
    Ensign Air Standard Seat Opal Gray Vinyl* High Quality Seat* Ensign* Opal Gray* Made Of Vinyl* High Back* Standard Base* With Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51110301
    SKU:
    51110301
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $659.99
    Qty in Cart: 0
    Price:
    $659.99
    Subtotal:
  • National Ensign High Back Air Seat - Black Cloth

    National Ensign High Back Air Seat - Black Cloth

    NATIONAL SEATING

    $584.99
    Ensign Air Standard Seat Black Forever Cloth* High Quality Seat* Ensign* Black* Forever Cloth* High Back* Standard Base* Without Arm Rests* Without Suspension Cover- Bellows* Without Back Cycler*...
    51110035
    SKU:
    51110035
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $584.99
    Qty in Cart: 0
    Price:
    $584.99
    Subtotal:
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Adding your products to cart

Here's the truth: investing those hard-earned dollars into aftermarket seating can fundamentally transform your driving experience. You can reduce your fatigue and get better lumbar support. That’s why we offer some of the best semi truck seats and accessories in the industry—built for comfort, durability, and long-haul performance. Whether you drive a Peterbilt, Kenworth, Freightliner, or another rig, you’ll find options that match your truck’s specs and your personal style.

Luxury Big Rig Seating Options

From air ride seats to universal semi truck seats and custom seat bases, we’ve got your backside covered. Choose your style and setup: - High-back, mid-back, and low-profile seats for every body type and cab layout. - Air ride seats for long-haul comfort, smoother suspension, and adjustable positioning. - Heated and cooled seat options to beat the heat or fight off the chill on extreme routes. - Ergonomic designs to ease back discomfort and promote better posture.

The Top Features

Material Matters Pick from cloth, faux leather, or genuine leather depending on your budget and the kind of road life you live. All built to handle real miles—not showroom fluff. Stylish & Functional Covers Dress up your seat with sleek two-tone seat covers, stitched accents, and built-in back pockets for on-the-go storage. Custom Base Adapters Mount your seat the right way with base adapters built for Seats Inc. Legacy, Sears Atlas, Bostrom, and more. Available in billet aluminum, gloss black, chrome, and custom powder-coat finishes.

Comfortable Accessories

Small upgrades with big difference: - Armrest covers for all-day elbow comfort - Lumbar support cushions to save your spine - Seat organizers to keep your essentials right where you need them

Get the Perfect Commercial Truck Seat

Check out our complete aftermarket semi truck seating guide to learn how to choose the right seat for your setup. Almost every new seat is going to need an adapter, unless it's a standard base unit. Let's say you have a mid-range truck, like a Freightliner M2 model; typically, those don't have a flat floor but a bit of a hump in the middle. That means you'll need a specific adapter and commercial truck seat that has a low-profile midback so you don't hit the roof. Lucky for you, our product selection is vast!

Why Shop Our Semi Truck Seating?

- Wide compatibility with Peterbilt, Freightliner, Kenworth, Volvo, and more. - Universal fitment options for hard-to-match setups. - Direct replacement or upgrade-ready seats and hardware. - Everyday low prices without sacrificing quality. - Real support from truck parts experts who understand your cab setup.

Start Driving in Comfort

A high-quality seat isn’t a luxury—it’s a necessity. Upgrade your semi truck seat, mount it with confidence, and finish it off with stylish covers and accessories that last. Shop the best semi truck seats and seating accessories today—and take the pressure off your back for the long haul.

Frequently Asked Questions About Semi-Truck Seats, Base Adapters & Covers

Will these seats fit my specific truck model and year?

Most aftermarket semi-truck seats are designed with universal mounting patterns that fit standard truck bases from manufacturers like Peterbilt, Kenworth, Freightliner, Volvo, and Mack. However, some trucks require specific base adapters. Check your current seat's bolt pattern (typically measured center-to-center) and compare it to the seat specifications. Common patterns include 8" x 8" and 11" x 11". If you're unsure, measure your existing seat base or contact us with your truck's year, make, and model for verification.

How difficult is it to install a new seat or base adapter?

Installation typically takes 30-60 minutes per seat with basic hand tools. You'll need a socket set, wrenches, and possibly a drill for certain adapters. The process involves unbolting the old seat, potentially installing a base adapter if needed, and bolting in the new seat. Most seats come with installation instructions. Common challenges include accessing tight bolts and ensuring proper electrical connections for air-ride seats. Professional installation is recommended if you're uncomfortable working with air lines or electrical connections.

What's the difference between vinyl, cloth, and leather seat materials?

Vinyl seats are the most durable and easiest to clean, making them ideal for drivers who eat in their trucks or haul dirty loads. They resist stains and spills but can get hot in summer and cold in winter. Cloth seats breathe better and provide more comfort in extreme temperatures but require more maintenance and are harder to clean. Leather offers premium comfort and appearance but needs regular conditioning and costs more. Consider your climate, maintenance preferences, and how many hours you spend in the seat daily when choosing.

Do I need a suspension base or air-ride system for my seat?

If you drive more than 6 hours daily or frequently travel rough roads, a suspension or air-ride seat significantly reduces fatigue and back pain. Air-ride seats offer the best vibration dampening and adjustability but require an air supply connection. Mechanical suspension seats provide good comfort without needing air hookups. Static (non-suspension) seats work for local drivers or backup seats but aren't recommended for long-haul use. Consider your driving conditions and health needs when deciding.

Will aftermarket seat covers fit my existing seats properly?

Universal seat covers work for most standard semi-truck seats but may require some adjustment for a snug fit. Look for covers with elastic bands, drawstrings, or hook-and-loop fasteners for better fitment. Measure your seat's backrest height, width, and cushion dimensions before ordering. Custom-fit covers are available for popular seat models like Bostrom, National, and Sears seating. Avoid covers that interfere with seat adjustment controls or armrest movement. For air-ride seats, ensure covers don't block ventilation ports.


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