Side Frame
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Western Star side frame
Top flange overhangs 5 3/8" towards engine with two5/16" N.C. threaded holes on a block that steps up3/16". Top and bottom flanges have 11 holes each, 5tapped 5/16" N.C. and 6 drilled clearance for 5/16"bolts. Various other holes for shroud, brackets, etc.NOTE: Side frame are not interchangeable. Order leftfor driver's side and right for passenger's side or pairs. Learn More -
Western Star side frame
Same as #520 except longer.
Note: frames are not interchangeable. Order left fordriver's side or right for passenger's side or pairs. Learn More -
Western Star side frame
Top flange is an "L" shape with 10 holes, two with5/16" N.C. threads and eight drilled clearance for5/16" bolts. Bottom flange has 12 holes, four with5/16" N.C. threads and eight drilled clearance for5/16" bolts. Various other holes for shroud andbrackets, etc.NOTE: Frames are not interchangeable. Order left fordriver's side or right for passenger's side or pairs. Learn More