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Fass 165GPH Duramax Lift Pump 2001-2010 Silverado Sierra 2500 3500 6.6L LB7 LLY LBZ LMM

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Fass 165GPH Duramax Lift Pump 2001-2010 Silverado Sierra 2500 3500 6.6L LB7 LLY LBZ LMM

(You save $94.82

 A Duramax Fass Fuel System is the most beneficial upgrade to the GM 6.6L diesel engine. The stock fuel system uses vacuum to draw fuel up to your injection pump or CP3 pump. The vacuum action is hard on a CP3 pump and usually allows for air to get into the fuel system. Air in a diesel fuel system will cause seriously expensive hard to injectors and the injection pump. Fass solves this by doing what they do best, using a Lift Pump Duramax diesels can now be force fed fuel, eliminating the need for vacuum to feed your injection pump.


Fass 165 lift pumps polish fuel, meaning when diesel fuel is circulated through the 2 micron filter and world class water/air separator, the Duramax Fass lift pump feeds the injection pump and whatever fuel is not consumed is sent back to the tank and processed back through the lift pump to continue to be polished. This Fass Lift Pump Duramax process protects your investment and keeps your truck on road. The TSC10165G Duramax Fass Fuel System comes with everything needed to install properly. 





  • New Bolt On Bracket Installation
  • Preset 8-10 PSI Fuel Pressure
  • Complete Replacement Pump
  • 165 Gallons Per Hour Flow Rating
  • Removes Water, Air and Debris From Diesel Fuel
  • 2 Micron Filtration Rating
  • Protects and Extends The Life Of Your Injectors
  • Improved Cold Weather Starts
  • Decreases Carbon Monoxide and Carbon Dioxide Emissions
  • ½ Inch Fuel Lines and Ports
  • Fuel Mileage Improvement
  • Improved Fuel Volume Delivery
  • Smoother Engine Idle
  • Optional Electric Heater Ports
  • Optional Fuel Pressure Gauge Port
  • Limited Lifetime Warranty
  • 30,000 Mile Filter Life Expectancy
  • Quietest Motor On The Market


Fitment Table:

2001 Duramax Fass Lift Pump System 2002 Duramax Fass Lift Pump System
2003 Duramax Fass Lift Pump System 2004 Duramax Fass Lift Pump System
2005 Duramax Fass Lift Pump System 2006 Duramax Fass Lift Pump System
2007 Duramax Fass Lift Pump System 2008 Duramax Fass Lift Pump System
2009 Duramax Fass Lift Pump System 2010 Duramax Fass Lift Pump System
LB7 Lift Pump Fass LLY Lift Pump Fass
LBZ Lift Pump Fass LMM Lift Pump Fass



Lifetime - Coops is an authorized Fass Dealer!
Coops shipping and returns policy is as customer freindly as we can make, We want our customers to trust if your part is not exactly what you want we will make it right.
Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Coops Custom offers custom products and custom bundles with certain products, if you have a major project and you need more than one part please contact us at 800-214-6218.

Fender Flares: Available in color match colors.
Colored Matched Bud Shields: Most of our AVS bug shield are avialble in color match.
Power Combos: We offer bundles of tuners, exhausts and air intakes.
wheels and Tires: Coops offers mounted and balanced Wheel and Tire Combos.

Coops Customs General Aftermarket Auto Part FAQ.

  • Will This Void My Warranty?
    Most aftermarket parts that do not delete emissions will not void any warranty under the Magnuson Moss Act.
  • Who is Coops Customs?
    Coops Customs is a family owned business since 2007. Zac Cooper started Coops with his knowledge of aftermarket accessories and love of customizing his vehicles.
  • Do you accept returns?
    Yes. We will take any return within reason. Coops wants our customers to shop with confidence knowing no matter what we will make sure your happy.
  • Do I have to pay for shipping if this part doesnt fit?
    No. If you have a problem with fitment Coops will provide customer service to get you the correct part and pay to return your incorrect part.
  • How fast do you ship out products?
    We do a amazing job of working on a 99% same day ship rate. If you order is in by 2PM CST you can expect a tracking number the same day.
  • What methods of payment do you take?
    We accept all major credit cards, paypal, google pay, amazon pay and apple pay.
  • Can I pick my item up?
    Yes. Unlike some other online retailers Coops Custom is a actually store.
    Coops Customs is located at 107 W Ryder St, Litchfield, IL 62056
  • Do you save my credit card info.
    No way. We do not store any customers personal payment info.
  • Why shop at Coops?
    We still believe in family businesss and supporting the smaller guys. Coops wants to earn your business with greats prices, in stock products and the best customer service around.

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