DiigParr 12V Starter Motor 129136-77011 129400-77012 Compatible with Yanmar Engine 3TN82E 4TN78 4TN82 Komatsu Excavator PC35 PC40 PC50

Replace Part Number:12125677010, 121256-77010, 12913077010, 129130-77010, 12913677010,129136-77010, 12913677011, 129136-77011, 12940077010, 129400-77010,12940077012, 129400-77012, YM12125677010, YM121256-77010, YM12913077010,YM129130-77010, YM12913677010, YM129136-77010, YM12913677011, YM129136-77011, YM12940077010, YM129400-77010, YM12940077011, YM129400-77011, YM12940077012, YM129400-77012 

Product type:Starter Motor for Yanmar Engine 3TN82E 4TN78 4TN82

Starter Motor for Komatsu Excavator PC35 PC40 PC50

Specification: Voltage: 12 Volts 

KW: 2 kW 

Rotation: CW 

Teeth/Splines: 15 Teeth/Splines 

Pinion/Splines OD: 43.7mm / 1.720in 

Mounting Hole 1: 13.0mm ID 

Unthreaded Mounting Hole 2: 13.0mm ID Unthreaded

Compatible with Engine: 

Compatible with Yanmar: 3TN82E, 4TN78, 4TN82 

Compatible with Komatsu: 3D78N-1E, 3D78N-1A, 3D78AE-3B, 3D78AE-3C, 3D84E-3D, 3D84N-2AA,4D88E-3B, 4D88E-3A, 4D84E-3B, 4D84E-3C, 4D84-2GA, 4D84-2B, 4D84-2A, S3D84E-3B,S3D84E-3A, S3D84E-3C, S3D84-2BA, 3D84E-5N-BA, 3D84E-5X-AB, 3D84E-3Q,3D88E-5P-BA, 4D88E-E1FD, 4D88E-3D, 4D88E-3GB, 4D88E-3C, 4D88E-3F, 4D88E-3H,4D88E-3C-04, S3D84-5X-AB, S3D84-5X-AC 

Applications:

Compatible with Komatsu Excavator: PC35, PC40, PC50, PC35MR-2, PC30MR-2, PC27MR-2 

Compatible with Komatsu Skid Steer Loader: SK820-5, SK818-5, SK815-5, SK714-5, SK05J-2

• Reliable 12V starter motor engineered for Yanmar 3TN82E, 4TN78, and 4TN82 engines, as well as Komatsu excavators including PC35, PC40, and PC50 models.
• Features robust construction designed to withstand demanding industrial and construction environments.
• Direct replacement for OEM part numbers 129136-77011 and 129400-77012, ensuring proper fitment and performance.
• Delivers consistent cold-start capability and dependable operation across extended duty cycles.
• Ideal for equipment maintenance, repairs, and rebuilds requiring authentic compatibility and durability.

Orders are delivered within 4–9 business days, including 1–2 business days for processing and 3–7 business days for shipping, depending on the destination and carrier.

We currently ship within the United States only.

Shipping Carriers
We ship via trusted carriers such as FedEx, DHL, and UPS.

Shipping Charges (USA Orders)

Orders over $299: Free shipping.

Orders $299 or below: Flat shipping fee of $28.99.

Return &Refund policy

We want you to be completely satisfied with your purchase. If for any reason you are not, you may request a return within 30 days from the date of delivery.

Return Conditions

• All returns require a Return Authorization Number (RAN), which you can obtain by contacting our customer service team.
• Items must be returned in their original condition and packaging.
• Returns must be shipped back within 30 days after the RAN is issued.
• Customers are responsible for return shipping costs unless the return is due to our error (e.g., incorrect or defective item).

Return Label

• Once your return request is approved, we will provide a return shipping label.
  
• The label can be downloaded and printed from the instructions sent to your email.
  
• The cost of return shipping is the customer’s responsibility, unless the return is due to our error (e.g., incorrect or defective item).

Restocking Fee

• A 10% restocking fee may apply to returns that are not the result of our error.

Defective or Damaged Items

• If your item arrives damaged or defective, please contact us immediately.
• Returned items will be inspected. If confirmed defective, we will, at our discretion:Replace the item at no cost, orIssue a full refund including shipping costs.
• If the item is found to be in working condition, the standard restocking fee may apply.

Non-Returnable Items

• Items damaged due to misuse, alteration, or improper handling cannot be returned or refunded.

How to Request a Return

To request a return, please contact our customer service team with:

• Order number
• Part number & product description
• Photos of the product and packaging
• Reason for return

Refund Processing

• Refunds are issued to the original payment method.
• Please allow 5–10 business days after we receive your return for processing.

Warranty: Our parts are covered for 6 months warranty without limitation on miles or hours of operation. Our parts are warranted on a parts-replacement-only basis. For more information, please view our warranty policy.