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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 Standard Base For ProRide Seat

    Bostrom Standard Base For ProRide Seat

    BOSTROM TRUCK SEATS

    $766.99
    Standard Base For ProRide Seat* High Quality Standard Base * Sold Individually* Warranty On Standard Base S Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    2421553003
    SKU:
    2421553003
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $766.99
    Qty in Cart: 0
    Price:
    $766.99
    Subtotal:
  • Bostrom Patriot Series 914 High Back Truck Seat in Black Ultra-Leather with Dual Arms - Black Cordura Cloth

    Bostrom Patriot Series 914 High Back Truck Seat in Black Ultra-Leather with Dual Arms - Black Cordura Cloth

    BOSTROM TRUCK SEATS

    $1,080.99
    Black Cordura Cloth High Back Seat With Manual Lumbar, Dual Arm Rest* High Quality Seat* Made Of Cordura Cloth* Black* High Back * Manual Lumbar * Dual Arm Rest* Made In USA* Sold Individually*...
    2356001455
    SKU:
    2356001455
    Color:
    Black
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,080.99
    Qty in Cart: 0
    Price:
    $1,080.99
    Subtotal:
  • Bostrom Standard Base High Back Manual Lumbar Seat With Armrests - Gray Mordura Cloth

    Bostrom Standard Base High Back Manual Lumbar Seat With Armrests - Gray Mordura Cloth

    BOSTROM TRUCK SEATS

    $982.99
    Bostrom Standard Suspension Hi-Back Manual Lumbar Seat With ArmrestsThis Bostrom Standard Suspension seat is designed to give you a comfortable and reliable driving experience that lasts for miles...
    2349011552
    SKU:
    2349011552
    Truck Class:
    Heavy Duty
    Color:
    Gray
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $982.99
    Qty in Cart: 0
    Price:
    $982.99
    Subtotal:
  • High Back Standard Base Seat W/ Self Contained Air Compressor, Manual Lumbar, Gray Mordura Cloth

    High Back Standard Base Seat W/ Self Contained Air Compressor, Manual Lumbar, Gray Mordura Cloth

    BOSTROM TRUCK SEATS

    $1,231.99
    T-Series Bostrom Standard Suspension Seat, Air Ride, Hi Back Manual Lumbar - Gray Mordura Cloth* High Quality Suspension* Made Of Mordura Cloth* With Self Contained Air Compressor* Hi-Back* Standard...
    2349006552
    SKU:
    2349006552
    Color:
    Gray
    Truck Class:
    Heavy Duty
    Material Options:
    Cloth
    Style Options:
    High Back
    Make:
    Universal Items
    Type Options:
    Low Base
    Product Type:
    Seats
    $1,231.99
    Qty in Cart: 0
    Price:
    $1,231.99
    Subtotal:
  • Bostrom T-910 Low Base High Back Seat With Armrests

    Bostrom T-910 Low Base High Back Seat With Armrests

    BOSTROM TRUCK SEATS

    $788.99
    Bostrom T-Series LoPro 910 Air Suspension High Back Manual Lumbar Truck SeatEnjoy the T Series' proven durability and comfort. The Flex Support Cushion System reduces cushion compression enabling you...
    2343149455
    SKU:
    2343149455
    Color:
    Black
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Cloth
    Make:
    Universal Items
    Type Options:
    Low Base
    Product Type:
    Seats
    $788.99
    Qty in Cart: 0
    Price:
    $788.99
    Subtotal:
  • Bostrom Truck Seat Lopro 910 Air Suspension High Back Manual Lumbar Dual Arm Rest - Gray Vinyl

    Bostrom Truck Seat Lopro 910 Air Suspension High Back Manual Lumbar Dual Arm Rest - Gray Vinyl

    BOSTROM TRUCK SEATS

    $924.99
    Gray Vinyl Bostrom High Back Air Suspension Seat W/ Manual Lumbar & Dual Arm Rests* High Quality Seat* Lopro 910 * Air Suspension * High Back * Manuel Lumbar * Dual Arm Rest * Gray * Vinyl* Sold...
    2343083546
    SKU:
    2343083546
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Low Base
    Product Type:
    Seats
    $924.99
    Qty in Cart: 0
    Price:
    $924.99
    Subtotal:
  • Bostrom T-915 High Back Air Suspension Truck Seat, Manual Lumbar, Dual Armrests - Gray Vinyl

    Bostrom T-915 High Back Air Suspension Truck Seat, Manual Lumbar, Dual Armrests - Gray Vinyl

    BOSTROM TRUCK SEATS

    $1,060.99
    Gray Vinyl T-915 High Back Air Suspension Truck Seat* High Quality Seat* Made Of Vinyl* Gray* Hi-Back* Air Lumbar* Sold Individually* Warranty On Seats Against Defects In Workmanship & Material From...
    2339252546
    SKU:
    2339252546
    Truck Class:
    Heavy Duty
    Color:
    Gray
    Style Options:
    High Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,060.99
    Qty in Cart: 0
    Price:
    $1,060.99
    Subtotal:
  • Bostrom High Base Truck Seat W/ Manual Lumbar, W/O Armrest - Tan Vinyl

    Bostrom High Base Truck Seat W/ Manual Lumbar, W/O Armrest - Tan Vinyl

    BOSTROM TRUCK SEATS

    $1,156.99
    Tan Vinyl Seat High Base Seat W/ Manual Lumbar* High Quality Seat* Made Of Vinyl* Tan* Standard Base* With Manual Lumbar* No Armrests* Bottom Skirt* Sold Individually* Warranty On Seats Against...
    2339131549
    SKU:
    2339131549
    Truck Class:
    Heavy Duty
    Color:
    Tan
    Style Options:
    High Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,156.99
    Qty in Cart: 0
    Price:
    $1,156.99
    Subtotal:
  • Bostrom Pro Ride Low Base Seat Assembly - Base Only

    Bostrom Pro Ride Low Base Seat Assembly - Base Only

    BOSTROM TRUCK SEATS

    $683.99
    Bostrom Pro Ride Low Base Seat Assembly - Base Only* High Quality Seat Assembly* Low Base* Base Only* Sold Individually* Warranty On Seat Assemblies Against Defects In Workmanship & Material From...
    2321258002
    SKU:
    2321258002
    Color:
    Black
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Type Options:
    Low Base
    Product Type:
    Seats
    $683.99
    Qty in Cart: 0
    Price:
    $683.99
    Subtotal:
  • Seat Base With Isolator For Bostrom T-Series LoPro 910 Driver Seat

    Seat Base With Isolator For Bostrom T-Series LoPro 910 Driver Seat

    BOSTROM TRUCK SEATS

    $1,036.99
    Seat Base For Bostrom T Series Low Profile 910 Driver SeatDo you need to replace the base to a T Series LoPro 910 seat? 4 State Trucks offers this high quality seat base with an isolator for the...
    2321222001
    SKU:
    2321222001
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Type Options:
    Low Base
    Product Type:
    Seats
    $1,036.99
    Qty in Cart: 0
    Price:
    $1,036.99
    Subtotal:
  • Bostrom Air Bolster Bag For Wide Ride II Seats

    Bostrom Air Bolster Bag For Wide Ride II Seats

    BOSTROM TRUCK SEATS

    $12.47
    Air Bolster Bag For Bostrom Wide Ride II SeatsIf the sides of your suspension seat does not inflate like it should it might be time to replace an air bolster bag. 4 State Trucks offers this quality...
    22980001
    SKU:
    22980001
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Seats
    $12.47
    Qty in Cart: 0
    Price:
    $12.47
    Subtotal:
  • Sears Seating C2 Air Suspension Seat For Class 6/7 Trucks - Black Vinyl

    Sears Seating C2 Air Suspension Seat For Class 6/7 Trucks - Black Vinyl

    SEARS SEATING

    $613.99
    C2 Black Vinyl Air Suspension Seat For Class 6/7 Trucks* High Quality Seat* Contoured Metal Backpan * 20 Inch Wide Seat And Back Cushions* Molded Vinyl Cushions* Black Vinyl * No Armrest * Sold...
    1C3211PNNNNN
    SKU:
    1C3211PNNNNN
    Color:
    Black
    Truck Class:
    Heavy Duty
    Material Options:
    Vinyl
    Make:
    Universal Items
    Product Type:
    Seats
    Ready To Ship:
    Yes
    $613.99
    Qty in Cart: 0
    Price:
    $613.99
    Subtotal:
  • Gray Vinyl Sentry High Back Seat Standard Base

    Gray Vinyl Sentry High Back Seat Standard Base

    SEARS SEATING

    $824.99
    Sentry Standard Seat Gray Vinyl* High Quality Seat* Single Locking Slides With 9 Inch Travel* Isolator With 1.25 Inch Travel* Standard Togglelink Air Suspension With 6 Inch Travel And Integrated...
    1A111WSBNNNN
    SKU:
    1A111WSBNNNN
    Color:
    Gray
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    Vinyl
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $824.99
    Qty in Cart: 0
    Price:
    $824.99
    Subtotal:
  • Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests, Heated - DuraLeather Gray

    Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests, Heated - DuraLeather Gray

    SEATS INC

    $1,460.99
    Gray DuraLeather High Back Suspension Truck Seat W/ Fully Reclining Backrest* High Quality Seat* 18 Inch Ez Adjust Armrest * Heated Seat Cushion And Back * Standard Features * Enhanced Shoulder And...
    188900MWH65
    SKU:
    188900MWH65
    Color:
    Gray
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,460.99
    Qty in Cart: 0
    Price:
    $1,460.99
    Subtotal:
  • Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests, Heated - DuraLeather Brown

    Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests, Heated - DuraLeather Brown

    SEATS INC

    $1,460.99
    Brown DuraLeather High Back Suspension Truck Seat W/ Fully Reclining Backrest* High Quality Seat* 18 Inch Ez Adjust Armrest * Heated Seat Cushion And Back * Standard Features * Enhanced Shoulder And...
    188900MWH63
    SKU:
    188900MWH63
    Color:
    Brown
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,460.99
    Qty in Cart: 0
    Price:
    $1,460.99
    Subtotal:
  • Brown Leather Legacy Silver High Back Seat Standard Base W/ Bellows

    Brown Leather Legacy Silver High Back Seat Standard Base W/ Bellows

    SEATS INC

    $1,468.99
    Legacy Silver Standard Seat Brown Leather* High Quality Seat* High Back* Standard Base* Brown * Duraleather With Armrests And Suspension Cover* 18 Inch Ez Adjust Armrest* Bellow Style Suspension...
    188900MWB63
    SKU:
    188900MWB63
    Color:
    Brown
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,468.99
    Qty in Cart: 0
    Price:
    $1,468.99
    Subtotal:
  • Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests - DuraLeather Gray

    Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests - DuraLeather Gray

    SEATS INC

    $1,297.99
    Gray DuraLeather High Back Suspension Truck Seat W/ Fully Reclining Backrest* High Quality Seat* 18 Inch Ez Adjust Armrest * Standard Features * Enhanced Shoulder And Back Support And Cushion Comfort...
    188900MW65
    SKU:
    188900MW65
    Color:
    Gray
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    Ready To Ship:
    Yes
    $1,297.99
    Qty in Cart: 0
    Price:
    $1,297.99
    Subtotal:
  • Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests - DuraLeather Brown

    Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests - DuraLeather Brown

    SEATS INC

    $1,499.99
    Brown DuraLeather High Back Suspension Truck Seat W/ Fully Reclining Backrest* High Quality Seat* 18 Inch Ez Adjust Armrest * Standard Features * Enhanced Shoulder And Back Support And Cushion...
    188900MW63
    SKU:
    188900MW63
    Color:
    Brown
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,499.99
    Qty in Cart: 0
    Price:
    $1,499.99
    Subtotal:
  • Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests - DuraLeather Black

    Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Armrests - DuraLeather Black

    SEATS INC

    $1,198.99
    Black DuraLeather High Back Suspension Truck Seat W/ Fully Reclining Backrest* High Quality Seat* 18 Inch Ez Adjust Armrest * Standard Features * Enhanced Shoulder And Back Support And Cushion...
    188900MW61
    SKU:
    188900MW61
    Color:
    Black
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,198.99
    Qty in Cart: 0
    Price:
    $1,198.99
    Subtotal:
  • Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Bellows - DuraLeather Black

    Seats Inc. Legacy Silver Seat W/ High Back, STD Base, Bellows - DuraLeather Black

    SEATS INC

    $1,246.99
    Black DuraLeather High Back Suspension Truck Seat W/ Fully Reclining Backrest* High Quality Seat* Bellow Style Suspension Cover * Standard Features * Enhanced Shoulder And Back Support And Cushion...
    188900MNB61
    SKU:
    188900MNB61
    Color:
    Black
    Truck Class:
    Heavy Duty
    Style Options:
    High Back
    Material Options:
    DuraLeather
    Make:
    Universal Items
    Type Options:
    Standard Base
    Product Type:
    Seats
    $1,246.99
    Qty in Cart: 0
    Price:
    $1,246.99
    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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