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  • SG753R - black coated steering gear with a white background.
  • Front-mounted view of the BIG BORE XD Cylinder Assist Steering Gear illustrating the output shaft alignment and durable black finish for Ford Super Duty applications.
  • Angled side view of the Big Bore XD® Cylinder Assist® Steering Gear highlighting the precision-machined housing, sector shaft and hydraulic assist ports on a white background.
  • Side profile of the Big Bore XD® Cylinder Assist® Steering Gear for 2005–2009 Ford F-250 and F-350 models showing high-pressure hydraulic housing and bolt assembly.
  • Rear housing view of the Big Bore XD® Cylinder Assist® Steering Gear displaying the sealed cap, input shaft and reinforced cast construction.
  • Front view of the Big Bore XD® Cylinder Assist® Steering Gear for Ford F-250 and F-350 trucks, showing heavy-duty cast housing and machined sector shaft with nut and washer installed in a white background.
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BIG BORE XD® Cylinder Assist® Steering Gear – Ford F‑250/F‑350 Super Duty (2005–9/2007) – PSC Certified Refurbished

BIG BORE XD® Cylinder Assist® Steering Gear – Ford F‑250/F‑350 Super Duty (2005–9/2007) – PSC Certified Refurbished

$695.00
$1,095.00 $695.00
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Part Number: SD-SG753R

If you're running a 2005 to mid-2007 Ford F-250 or F-350 and upgrading to a PSC Cylinder Assist® system, this is the steering gear you need.

These are PSC BIG BORE XD® Cylinder Assist® Steering Gears, offered as PSC Certified Refurbished units.

Each unit has been inspected, rebuilt where needed, and tested to meet our performance standards. They may show minor cosmetic wear from prior use or handling, but they are fully functional and built to perform the same as our standard units.

This gear is built for Cylinder Assist® applications and designed to handle oversized tires, added weight, and real off-road use—while keeping steering smooth, controlled, and predictable.

It features a splined input shaft for direct compatibility with your factory setup, making installation straightforward.

If you're working on a 2007 model, make sure to check your build date—you’ll find it on the placard inside the driver’s side door B-pillar.

All refurbished unit sales are final.

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About:About:

Why you’ll love it

  • All-new construction—no remanufactured parts
  • Larger sector shaft and bearings for smoother steering
  • Works with OEM or aftermarket pitman arms
  • Designed specifically for PSC Cylinder Assist® systems
  • Built to handle big tires and heavy loads

Tech InfoTech Info

Heads‑up for installers

  • This gear has a splined input shaft—double-check compatibility
  • For 2007–2008 trucks, verify the production date before ordering
  • Check the placard on the driver’s side door B-pillar for build info
  • Works with factory-style pitman arms for this model range

Fitment

  • Ford F-250 / F-350 Super Duty
  • Model Years: 2005–Mid-2007
  • Input Shaft Type: Splined
  • OE Cross Reference:
    5C342504AB, 5C342504AE, 5C342504AF, 5C342504AG
    6C343504AA, 6C343504AB
    7C3Z3504A, 7C343504AB
    STG152

Specs

Input Shaft: Splined
Sector Shaft: Oversized for durability
Bearings: Upgraded for smoother feel
Compatibility: OEM and aftermarket pitman arms

What’s included

(1) Cylinder Assist® Steering Gear
(Pitman arm and assist components sold separately)

SupportSupport

OEM Cross Reference

Direct Replacement for Motorcraft:

  • 5C342504AB
  • 5C342504AE
  • 5C342504AF
  • 5C342504AG
  • 6C343504AA
  • 6C343504AB
  • 7C3Z3504A
  • 7C343504AB
  • 7C3Z3504BRM
  • STG152
  • Cardone 97-7621GB
California Prop 65 Warning

California Prop 65 Warning

This product can expose you to chemicals including lead and di (2-ethylhexyl) phthalate, which are known to the State of California to cause cancer, birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov