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Our FASS Signature Series Adjustable Diesel Fuel Pumps are designed to be the most versatile high performance fuel pump on the market that allows for adjustable fuel pressures to meet the demand of high performance GM Duramax 6.6L applications. Manufactured with the same motor used in our Titanium Signature Series pumps, this adjustable fuel pump is rated at 100 gallons of diesel fuel per hour and offers adjustable fuel pressure from 1-20 PSI to customize fuel delivery for race or competition diesel engines. To aid in proper performance we built in a boost compensation port, air pressure from your intake manifold raises fuel pressures while under full throttle, maintaining fuel pressure when it matters most.
This is a fuel pump only and must be used with your factory fuel filter. It is suggested that all pumps be adjusted only if you have installed a fuel pressure gauge, for questions please contact our technical support team.
Fitment Table:
2001 GMC Sierra Duramax Fass Fuel System | 2010 GMC Sierra Duramax Fass Fuel System |
2002 GMC Sierra Duramax Fass Fuel System | 2011 GMC Sierra Duramax Fass Fuel System |
2003 GMC Sierra Duramax Fass Fuel System | 2012 GMC Sierra Duramax Fass Fuel System |
2004 GMC Sierra Duramax Fass Fuel System | 2013 GMC Sierra Duramax Fass Fuel System |
2005 GMC Sierra Duramax Fass Fuel System | 2014 GMC Sierra Duramax Fass Fuel System |
2006 Chevy Silverado Duramax Fass Fuel System | 2015 Chevy Silverado Duramax Fass Fuel System |
2007 Chevy Silverado Duramax Fass Fuel System | 2016 Chevy Silverado Duramax Fass Fuel System |
2008 Chevy Silverado Duramax Fass Fuel System | |
2009 Chevy Silverado Duramax Fass Fuel System |
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.