What is Cummins 3973511?

It is a filler oil cap / engine oil fill cap identified by multiple Cummins parts retailers as part number 3973511.

What part numbers replace 3973511?

Retail cross-references commonly list 3968202, 3945254, and 3937759 as superseded numbers.

Which engines does it fit?

Retailers commonly associate it with Cummins ISB and ISL family applications, including 5.9L and 6.7L truck setups.

Is this a genuine Cummins part?

Yes, the listed sources identify 3973511 as a Cummins part number and OEM component.

How should fitment be confirmed?

Confirm against your engine serial number or existing cap number before ordering, especially for mixed-fleet applications.

CUMMINS

3973511 Engine Caps by Cummins | Only 1 Left BC

Name: 3973511 Engine Caps by Cummins | Only 1 Left BC
Brand: Cummins
SKU: 3973511
Price: 117.99 CAD
Availability: InStock

Part number: 3973511

$117.99 In Stock Pre-Order Sold out

All-in pricing Shipping included Ships from BC

What you see is what you pay. No freight, no fuel surcharge, no handling fee.

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Shipping included Canada wide, no freight checkout. No fuel surcharge, no handling fee.

In stock, ships from BC Stocked locally in British Columbia, ships Canada-wide in 1 to 3 business days.

OEM and aftermarket Cummins genuine and equivalent options available.

CODE: 3973511

Categories: All Products, Cummins Parts, Dodge Ram 2500 Parts, Freightliner 2-Ton (USPS MT-45) Parts, Heavy equipment Parts, ISB 5.9 Parts, ISB 6.7 Parts, Ottawa Yardhorse Parts, Peterbilt 220 Parts, Peterbilt 337 Parts, Ram 2500 Parts

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Overview
Specs
Fitment
Shipping
Returns

The Cummins 3973511 is a engine cap that fits ISB 5.9. Cross-references include Mopar 68003321AA, Mopar 5014704AA. Stocked in Prince George, BC and ships Canada-wide.

Vendor: Cummins
Part number: 3973511
Type: Engine Cap
Quality: OEM-equivalent
Stocking location: Prince George, BC, Canada

Applications

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)

Cross References

Mopar 68003321AA
Mopar 5014704AA
Mopar 5014704AB
Mopar 5014704AC

Only 1 left in BC. Orders placed before 2:00 pm Pacific Time ship the same business day from Prince George, BC. Shipping included on most orders, Canada-wide.

30-day return window on unused parts in original packaging. See our refund policy for full terms. Defects or warranty claims: email sales@rentwithaim.com.