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SKU:
NLT2T00127
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Gear Housing Access Hole Cover 3903463 for Cummins B / C / ISC Series Diesel Engines
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
This is an engine gear-housing access cover referenced by Cummins 3903463 for compatible diesel engine applications.
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
| Brand | Model / Engine | Application Notes |
|---|---|---|
| Cummins | 4B / 6B families | Verify by engine serial number |
| Cummins | 6C / ISC families | Verify by engine serial number |
Product Overview
The cover closes a service opening in the front gear housing, helping keep oil inside and dirt, water and debris away from the timing-gear area. A damaged or missing cover should be corrected before contamination reaches the gear train.
Parts catalogs identify 3903463 as an access-hole cover, and the number is commonly cross-listed across several Cummins B/C-series service applications. Exact engine fitment should be confirmed from the engine serial number or the existing cover reference.
Key Features & Performance
- Closes the front gear-housing service opening
- Helps protect timing gears from outside contamination
- Direct service replacement identified by Cummins reference 3903463
- Simple part-number-based match for engine repair and overhaul work
Technical Specifications
| Part type | Gear housing access-hole cover |
|---|---|
| Primary reference | 3903463 |
| System | Front gear housing / timing gear service access |
Part Numbers & Cross-References
3903463
Frequently Asked Questions
What should I verify before ordering?
Use the Cummins engine serial number or the number on the original cover to confirm application.
Is this an OEM part?
No. This listing is a replacement component. Manufacturer names, model names and reference numbers are used for identification and compatibility; compare the original part and equipment details before ordering.