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  1. Sinister Diesel Cat Fuel Filter Adapter for GM Duramax 2001-2016

    Prolong the Life of Your Fuel System!


    • Improved Filtration Efficiency
    • CNC Billet Aluminum Construction
    • Blue Anodized Finish
    • Covered by the Sinister Lifetime Warranty

    Kit Includes:

    • (1) Sinister Diesel CAT Fuel Filter Adapter
    • (1) Stand Off Space with hardware
    • (1) Ultra-fine 2 Micron CAT Fuel Filter
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  2. Sinister Diesel Passenger Side Up-Pipe for Duramax 6.6L 2001-16 (Ceramic Coated)
    Special Price $359.99 was $386.66

     Impeccable Design, Unsurpassed Quality, and Great Value


    • Designed to boost your vehicle's performance
    • Stainless steel tubes for longevity
    • Mandrel bent tubing for maximum flow
    • Ensures unrivaled durability
    • Provides reliable service for years ahead
    • Fits: GM Duramax 2001-2016 6.6L


    • Emissions: EPA compliant
    • Series: Race Series
    • Position: Driver Side
    • Material: Stainless Steel
    • Finish: Ceramic Coated
    This is a "RACE ONLY" product used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state and federal laws. Not for vehicles registered for use on the highway or street.
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  3. Sinister Diesel 320 Amp OEM High Output Alternator - Duramax 6.6L 2013-2017
    Special Price $599.00 was $778.70

    Sinister Diesel 320 Amp OEM High Output Alternator 

    Features and Benefits:

    • Cast Aluminum Chassis
    • Powder Coated in Sinister Blue
    • Upgraded High Output Regulator
    • Upgraded High-Temperature Bearings
    • 1 Year Warranty


    • High Output 320 Amp Alternator

    Note: When upgrading to a higher output alternator, we highly recommend upgrading your battery cables.

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