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12_210955b5-fd66-496b-9012-d0ab1d87d996 - Northline Parts

Cummins 3903463 Gear Housing Access Hole Cover

SKU: NLT2T03149
$22.99 In Stock
$22.99
Sale price  $22.99 Regular price 
Ships for free in 2–4 business days.
This access-hole cover matches Cummins reference 3903463 and closes the service opening in compatible B/C/ISC-family engine gear housings.
Estimated delivery between
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
Compatible equipment / model
Cummins engine applications specifically cataloged for access cover 3903463, including selected 4B / 6B / 6C / ISC families

Product Overview

A missing or damaged access cover leaves the gear-housing service opening exposed to dirt, oil leakage and contamination.

Replacing the cover restores the removable closure used to seal the opening between service procedures.

Key Features & Performance

  • Cummins reference 3903463
  • Gear-housing access-hole cover
  • Used across several Cummins diesel-engine families
  • Removable maintenance access point
  • Seal/O-ring condition should be checked during installation

Replaces / Cross-References

  • 3903463

What Is Included

1 gear-housing access-hole cover.

Fitment Notes

Cummins identifies 3903463 as an access-hole cover. Verify engine/CPL and whether a separate seal or fastener is required for your application.

Frequently Asked Questions

Is this a genuine OEM part?
No, unless the product page specifically states otherwise. This listing is for a replacement, accessory, upgrade or repair component as described above. OE, Partslink and interchange numbers are provided for identification and fitment reference.

How should I verify fitment before ordering?
Match the year, model, engine, trim/body style, side or position, connector, mounting points and any reference numbers above against the original component. For industrial equipment, also verify the machine serial number or engine build/CPL when available.

Part Summary

Keywords: Cummins 3903463 Gear Housing Access Hole Cover, 3903463

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