Retainer Valve Spring Upper – 66871

Looking up the correct retainer valve spring upper starts with the exact catalog number. This product is listed as 66871 and is associated with the Komatsu engine/application data below. Use both the number and the full application designation when checking fitment.

Komatsu Fitment Overview

Catalog data currently associates this product with 3 listed Komatsu engine/application references. Examples include N855-1, NT855-1, NTA855-1.

Compatible Engines / Applications

• N855-1
• NT855-1
• NTA855-1

Product Details

• Item: Retainer Valve Spring Upper
• Part Number: 66871
• Brand / Application Reference: Komatsu
• Catalog Specification: As stated in the product name
• Listed Applications: 3

Service and Replacement Notes

Pistons, rings, liners, and sleeves are internal-engine components where application and size details are critical. Match the exact part number and any size reference in the item name, then verify the complete engine/application code. Components from related engine families may not be interchangeable.

Before Ordering

The most reliable fitment check is an exact part-number match combined with matching application data. Confirm 66871 against the original component, parts manual, or service record before purchase.