Fuel filter illustration – not the actual part
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Fuel filter illustration – not the actual partDiesel Parts Direct logo

Aftermarket parts may appear slightly different, including the packaging.

Caterpillar3100 SeriesFuel Filters

DS-326-1644 Fuel/Water Separator Filter For Caterpillar Engines

Compatible With 3176, 3064, 3066, and C7 Engines

OEM #: 3261644SKU: DS3261644
$43.68

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

The DS-326-1644 water separator / fuel filter can be used in the following Caterpillar engine models:

  • 3064, 3066
  • 3176
  • C6.6, C7, C9, C11
SKU DS3261644
OEM Number 3261644
Part Type Filters, Fuel
OEM Brand CATERPILLAR

Aftermarket warranty

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  • Orders are processed the same or next business day
  • Expedited shipping options available at Checkout
  • If same-day shipping is critical, please call to confirm availability

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Call any of our friendly Parts Dept. Specialists with your engine serial number, and we can quickly verify whether this part is the correct part for your engine — no guesswork.

Phone: 888.687.0539

Don't know how to find your engine serial number? Go to our Engine Help Center for assistance.