Caterpillar publishes no replacement or superseding number for 5T-7161.
2D9600 (Caterpillar 2D-9600) is the master cylinder Caterpillar lists on the other end of this same 120B brake circuit, stocked separately - a soft pedal can be either end, so diagnose before ordering.
Caterpillar lists these related items in the same group: cylinder 5B-3217, hose assembly 4B-8761 and o-ring 5F-1678.
Key Notes:
Part Number: 5T7161 (Caterpillar reference 5T-7161)
Function: Receives pressure from the master cylinder and pushes the brake shoes out against the drum
Material: Alloy metal, corrosion resistant and brake fluid tolerant
Weight: 3.21 lbs.
Condition: Aftermarket replacement part
Application: Replaces a drum brake wheel cylinder on the Caterpillar 120B motor grader
Shipping Restrictions: Ships to the lower 48 US states only
Note: Cylinder only - hose, o-ring, shoes, springs and fluid are not included. Mounted inside the drum on the backing plate, so the drum has to come off to reach it. Count how many the machine needs before ordering.
Common Use Case or Symptoms:
Order this when one wheel is not contributing under the pedal, when a drum comes off wet with brake fluid, or when a piston has seized in the bore and left a shoe dragging - a grader with one dragging brake will cook a drum and pull off line on a finish pass.
Why Choose Broken Tractor?
✅ Inside The Drum: Backing plate mounted, which means it is only found once the drum is off - worth having on the shelf before the wheel comes apart.
✅ Brake Fluid Tolerant Alloy: The bore and pistons are what fail on a cylinder that has sat with old moisture-laden fluid in it.
✅ Master And Wheel Both Stocked: The 2D-9600 master cylinder on the same circuit is listed separately, so either end of a soft pedal can be sourced from one place.
$57.00/ea
Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.
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