Upgrade your ride with a 21″ wide black vinyl truck seat cushion designed for National Seating air suspension bases. This easy bolt-on replacement delivers superior comfort and durability—ideal for Freightliner, Kenworth, Peterbilt, International, and more.
21″ Wide Replacement Truck Seat Cushion in Black Vinyl
Description
Key Features & Benefits
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Durable Black Vinyl: Designed to withstand daily wear and tear in demanding driving environments.
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Wider Seat Width: 21″ wide design offers more comfort and support for long hauls.
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Bolt-On Replacement: Installs easily to your National Seating air suspension base with no modifications.
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Ergonomic Shape: Provides better lower back and leg support.
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Made in the USA: Quality craftsmanship and materials for long-lasting performance.
Why Choose This Replacement Truck Seat Cushion?
Whether you’re restoring an old rig or upgrading your current setup, this 21″ Black Vinyl Truck Seat Cushion is built to handle the miles. With a sleek look, extra width, and easy installation, it’s the ideal upgrade for fleet managers and solo operators alike. Backed by our commitment to quality and comfort.
Product Specifications
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Material: Heavy-duty black vinyl
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Width: 21 inches (extra wide comfort fit)
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Compatibility: Bolt-on replacement for National Seating air suspension seat bases
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Color: Black
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Installation: No tools required beyond base removal/install
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Made in: USA
⚠️ Important Note: This cushion is only compatible with National Seating air suspension seat bases. It will not fit Bostrom, Sears Seating, or Knoedler seats. If you’re unsure which base your truck has, please contact us before purchasing.
| Make | Compatible Models | Notes |
|---|---|---|
| Freightliner | Cascadia, Columbia, Century Class, FLD, M2 | Most equipped with National 2000 or Ensign air suspension seats |
| Kenworth | T660, T680, T800, W900 | Commonly use National Commodore or Ensign seating packages |
| Peterbilt | 379, 386, 389, 579 | Compatible with National aftermarket seats and air ride systems |
| Volvo | VNL, VNM, VNR, VT880 | Check for National aftermarket seat installation or factory upgrades |
| International | LT Series, ProStar, 9400, 9900, 8600 | Works with National Seating 2000 and Ensign models |
| Mack | Pinnacle, Granite, Anthem | Often spec’d with National Commodore or upgraded suspension seating |
| Western Star | 4700, 4900, 5700XE | Compatible when equipped with National air ride base |
| Sterlin | A-Line, L-Line | Some models include National Seating packages from factory |
Additional information
| Truck Make | Freightliner, International, Kenworth, Mack, Peterbilt, Volvo, Western Star |
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