Browse Peterbilt 337 Suspension Crossmembers / K-Frames for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 8 listings. Peterbilt 337 Suspension Crossmember / K-Frame pricing ranges from $225 to $475 based on recent marketplace data. Filter by condition, price, or year to find the right Peterbilt 337 Suspension Crossmember / K-Frame.