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Quick Coupler Cylinder Seal Kit for Komatsu WB140 & WB150 Backhoes

SKU:
42N-879-1980
FitsModel:
WB150AWS-2, WB150-2, WB140PS-2N, WB140-2N (after serial # A20001), WB150AWS-2N (after serial # A40001, 150F80001)
ListDescription:
Quick Coupler Cylinder Seal Kit
Komatsu WB140-2N WB150-2 backhoe quick coupler cylinder seal kit 42N-879-1980
Part # 42N-879-1980

Fits Models At A Glance:

  • Komatsu Backhoes:
  • WB140-2N (After Serial Number A20001)
  • WB140PS-2N
  • WB150-2
  • WB150AWS-2 & WB150AWS-2N (After Serial Number A40001 & 150F80001)

Key Notes:

  • Part Number: 42N-879-1980
  • Weight: 0.34 lbs (0.15 kg)
  • Application: Quick coupler cylinder seal kit — replaces worn or damaged seals in the quick coupler cylinder to restore proper locking force and eliminate external hydraulic leaks on the bucket quick coupler system
  • Cylinder Number: 200060282
  • Rod Diameter: 18mm (11/16")
  • Bore Diameter: 30mm (1-3/16")
  • Manufacturer: Bulldog / Hercules Hydraulics — Made in USA
  • Condition: Aftermarket replacement part
  • Note: Confirm serial number before ordering — WB140-2N fitment begins After Serial Number A20001 and WB150AWS-2N fitment begins After Serial Numbers A40001 and 150F80001

Common Use Case or Symptoms: Use when the quick coupler cylinder is leaking externally, the coupler fails to lock or unlock the bucket attachment reliably, or the coupler loses holding pressure — all common signs of worn quick coupler cylinder seals on Komatsu WB140 and WB150 series backhoes.

Why Choose Broken Tractor:

  • Made in the USA by Bulldog / Hercules Hydraulics: Precision-engineered seal kit manufactured to exact OEM rod and bore specifications for a leak-free, direct-fit installation
  • Cylinder Cross-Reference Included: Confirmed for use with Komatsu quick coupler cylinder 200060282 — no guesswork on compatibility
  • Fast Shipping from a U.S.-Based Team: In-stock and ready to ship same day from our U.S. warehouses
$24.00

Shipping charges are calculated at checkout.
Items are NOT guaranteed to be in stock at the time of order.
Refunds are offered if the item is on back-order.

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Product: Category: Brand: Head Title: Komatsu Backhoe Cylinder Seal Kit | Broken Tractor | 42N-879-1980