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Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Reference numbers
Primary number
8N1187
Formatting alias
8N-1187
Other documented relationship
242-3435
4N7446
6N8120
6N8889
Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.
Product summary
Loaded Cylinder Head Assembly
Category
Excavator Engine Parts
Catalog ID
77741492
Photo views
3
Before ordering
Confirm these details
Match the complete part number on the original component.
Compare connectors, mounting points and visible dimensions with the product photos.
Confirm the exact machine or engine model and serial range before ordering.
Machine fitment
Compatible model references
2 model references
Engine family: Caterpillar 3306PC / 3306
Cataloged equipment: D6D / D7G tractors, 235 excavator, 966C loader and related 3306 machines
Fitment / evidence notes
Fitment limitation: Confirm engine serial prefix and bare-versus-loaded assembly content
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Common questions about 8N1187
Which machines use 8N1187?
Recorded compatible model references include Engine family: Caterpillar 3306PC / 3306, Cataloged equipment: D6D / D7G tractors, 235 excavator, 966C loader and related 3306 machines. Recorded fitment/evidence notes: Fitment limitation: Confirm engine serial prefix and bare-versus-loaded assembly content. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for 8N1187?
Formatting aliases for the same number: 8N-1187.
How do I confirm 8N1187 before ordering?
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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