Brand new OEM and blueprinted units are available. The 525 steering box is a stout unit that has withstood the test of time. GM started producing this box in the 50’s and still uses versions of it for production vehicles today. The 525 steering box is available with a 1”or a 3-1/2” long input shaft with 16:1 or 24:1 steering ratios. All steering boxes have a 3-year warranty. Reversed boxes are also available.
525 STEERING BOX
'62-82 DODGE and PLYMOTH
'63-82 CORVETTE
MULLINS 122
Our 122 manual box is a rebuilt Saginaw box with a 3-3/4” long, 3/4-36 spline input shaft. It has a 24:1 ratio and 7/8-14 pitman nut thread.
65’–70 MUSTANG
• Original steering boxes with either long or short input shafts.
• Specify 16:1 or 20:1 steering ratio and 1” or 1-1/8”
sector shaft diameter
‘63–67 CHEVY II
• Original steering boxes with either long or short input shafts
‘55–57 CHEVY
• original long input shafts
• short input shaft for use
with aftermarket columns
• stock 22:1 ratio or a quick steer 16:1 ratio
Direct Replacements
NOTE: Most Vega 140, 525, 605, and 700 steering boxes use the same three hole mounting pattern.

NSRA