2021-2025+
The Peterbilt 537 and 548 are part of Peterbilt’s latest medium- and heavy-duty vocational lineup, introduced in 2021. Both trucks share the 2.1-meter wide cab and are built for work truck versatility, with durable frame options and upgraded driver environments.
- Peterbilt 537: A Class 7 medium-duty truck, great for heavier regional and vocational work.
- Peterbilt 548: A more robust Class 8 vocational chassis, often spec’d with tandem axles and heavier-duty components.
These models are ideal for fleets and municipalities that need modern ergonomics in trucks that can still take a beating.
| Model | Typical Applications |
|---|---|
| Peterbilt 537 | Regional delivery, rollback/tow, dump, utility service, box truck |
| Peterbilt 548 | Heavy dump, vacuum trucks, refuse, crane, plow, municipal fleet use |
With a customizable frame, PTO options, and available all-wheel drive (on the 548), these trucks are purpose-built for vocational upfits.
Cab Type: 2.1-Meter Wide Cab
- Shared with: Peterbilt 535, 536, 567, and Kenworth T280, T380, T480
- Provides greater interior room, improved visibility, and better insulation
- Supports larger seats, premium trim, and digital dash options
Aftermarket Seat Compatibility
Because the 537 and 548 use the 2.1m wide-body cab, the seat bolt pattern is 6" x 12", not the standard vocational 4.68" x 12" - an adaptor plate is most likely needed.
- Seats Inc. Legacy series (High Back or LO) — with 2.1m cab adaptor
- National Admiral CT or Commodore — fits with 2.1m cab adaptor plate
- Knoedler Air Chief or Extreme LowRider — with 2.1m cab adaptor
- Gramag Smart MR or eVolution — adaptor available for 2.1m wide-body cabs
Installation Notes
- Always confirm your cab width (2.1m) using your build sheet or VIN data.
- Some wide-base suspensions may restrict travel due to proximity to door trim.
- Low-profile seats are often a better fit if your 537/548 is spec’d with a raised floor or center console.
- For electric features like heat, cooling, massage, or lumbar, confirm 12V power availability.
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Knoedler Air Chief Seat (choose your options)
Knoedler Manufacturers
Your Price: 1,733.77CAD - 2,670.20CADThe Knoedler Air Chief line offers a customizable seat to meet the individual needs of drivers rather than a one seat fits all solution. All seats come standard with the following features: Upper and Lower Air Adjustable lumbar Color Definition ...Air ChiefYour Price: 1,733.77CAD - 2,670.20CAD -
Knoedler NEW REVISION Power Chief (choose your options)
Knoedler Manufacturers
Your Price: 5,058.09CADThe Knoedler POWER Chief is pure handcrafted luxury. The powerchief is an excellent replacement for old Comfort Ride Seat or if you are looking for a move to luxury. Standard Features Power Electric Recline Function Power Electric Fore & Aft...98POYour Price: 5,058.09CAD -
National Admiral (choose your options)
National Seating
Your Price: 1,965.12CAD - 3,244.45CADThe Admiral is the top of the line seat from National for comfort behind the wheel. As a step up from the Commodore, the Admiral includes both swivel and heat as well as adjustable damper. This seat packs a lot of value for the price...40049/40079Your Price: 1,965.12CAD - 3,244.45CAD -
Prime Seating TC600 Series
Prime Seating
Your Price: 1,921.05CAD - 2,064.27CADReserve while you can!! Your Dream Seat is now available from “Prime Seating”. “Prime TC600LBK” has all the functions and features you are dreaming about. One of key feature on Prime TC600LBK model is...TC600Your Price: 1,921.05CAD - 2,064.27CAD