Genuine Cummins 3973511 Engine Oil Filler Cap | ISB 5.9 6.7 QSB
SKU 3973511
In stock: 1 available · Ships from Kelowna BC
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Match the listed SKU and verified cross-references to your current part number. If fitment is not listed, send AIM Rentals the machine details and current part number before ordering.
Genuine Cummins 3973511 Engine Oil Filler Cap | ISB 5.9 6.7 QSB
The Cummins 3973511 is a genuine Cummins engine oil filler cap (valve cover oil fill cap) used across the Cummins ISB 5.9L, ISB 6.7L, QSB 5.9, QSB 6.7, ISL9, QSL9, QSZ13, and related engine families. This is a direct-fit OEM replacement that threads into the valve cover oil fill opening. Stocked in Kelowna, BC and ships Canada-wide.
Specifications
- Part Number: 3973511
- Brand: Cummins (genuine OEM)
- Type: Engine Oil Filler Cap
- Superseded/related numbers: 3968202, 3942135, 3944736, 3945254, 3937759, 042163
Fitment
- Cummins ISB 5.9L and ISB 6.7L engines
- Cummins QSB 5.9, QSB 6.7
- Cummins ISL9 and QSL9
- Cummins QSZ13
- Dodge Ram 2500 (5.9L/6.7L Cummins diesel)
- Freightliner (2-ton USPS MT-45)
- Ottawa Yardhorse
- Peterbilt 220, 337
Cross-References
- Cummins: 3968202, 3942135, 3944736, 3945254, 3937759
- Cummins alternate number: 042163
FAQ
What Cummins engines use the 3973511 oil filler cap?
It fits ISB 5.9L, ISB 6.7L, QSB 5.9, QSB 6.7, ISL9, QSL9, and QSZ13 engines — a very broad range of Cummins B-series and related engines used in trucks and construction equipment.
Is 3973511 the same as 3968202?
3968202 is the most common alternate/superseded number. They are interchangeable for most applications. Confirm with the engine serial number if unsure.
Is this a genuine Cummins cap?
Yes. Confirmed as a genuine OEM Cummins oil filler cap from multiple authorized Cummins parts sources.
Available in Canada?
Yes, in stock at Kelowna, BC with Canada-wide shipping.
| Make | Model | Year | Engine / Spec |
|---|---|---|---|
| ["ISB 5.9","ISB 6.7","ISL9","QSB5.9","QSB6.7","QSL8.9","QSC9","Dodge Ram 2500","3500","Ram 2500","Peterbilt 220","Peterbilt 337","Ottawa Yardhorse","Freightliner 2-Ton (USPS MT-45)"] | |||
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