Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | Source catalog | 190-0643 |
| Unverified Reference - Do Not Order By This Number Alone | Source catalog | 310-4027 |
5 product photos · Select a thumbnail to change the main view.
Excavator Engine Parts
190-0643 Belt Tensioner Pulley for CAT C9
OEM / reference190-0643
SpecificationBelt Tensioner Pulley
Catalog ID51039033
Belt Tensioner Pulley identified by primary reference 190-0643. The cited technical sources record 111 application references. Confirm the complete number, connector or mounting arrangement, and machine serial range before ordering.
Fitment status: Verified · Checked 2026-07-22- Product Type
- Belt Tensioner Pulley
- Product Brand
- EexcavaStart
- Model Number
- 190-0643 310-4027 3104027
- Engine Model
- CAT C9
- Condition
- New replacement part
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Evidence record
- Source
- parts.cat.com
- Evidence grade
- manufacturer-supported
- Checked
- 2026-07-22
- Source file
- data/fitment-evidence.json; data/product-details.json
Product fitment guide
Part numbers and compatible models
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Reference numbers
Primary number
Other documented relationship
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Belt Tensioner Pulley
- Category
- Excavator Engine Parts
- Catalog ID
- 51039033
- Photo views
- 5
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
80 model references
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 190-0643
Which machines use 190-0643?
Recorded compatible model references include Recorded application: C7, Recorded application: C9, Recorded application: C15, Recorded application: IT62G II, Recorded application: IT62H, Recorded application: IT38G II, Recorded application: 570B, Recorded application: 963C and 72 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for 190-0643?
190-0643 is the only classified number in the current evidence record. Send the original nameplate for an alternate-number check.
How do I confirm 190-0643 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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