Mercury Cougar Engine Additives

Your One-Stop Shop For Trusted Mercury Cougar Engine Additives

If you’re in search of Mercury Cougar Engine Additives aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 6 Engine Additives from top brands with prices ranging from $17.99 to $931.99.

Beyond great prices, we stock trusted brands manufacturing all types of Engine Additives for your Mercury Cougar. Of the 2 OEM and aftermarket parts brands we carry, some of the most popular are Powertrax and Yukon Gear.

And don’t forget to read customer reviews across all Engine Additives categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Engine Additives have to cost top dollar, and we prove it. Browse our top Mercury Cougar Engine Additives below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Mercury Cougar Engine Additives

Powertrax – No-Slip Traction System (Part No.9206883108)

No-Slip Traction System

from

$544.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
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    Yukon Gear – Grizzly Locker For Ford 8" With 28 Spline Axles (Part No.28006)

    Grizzly Locker For Ford 8" With 28 Spline Axles

    from

    $931.99
    The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000!

    Product Features:
    • Fits Ford 8″ with 28 spline axles
    • Patented internal design reduces common locker failures
    • 8620 internals for added strength
    • Assembled in the USA
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    Powertrax – Lock Right Locker (Part No.1820-LR)

    Lock Right Locker

    from

    $442.99
    The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
  • See More

    Powertrax – Grip PRO Traction System (Part No.GT108028)

    Grip PRO Traction System

    from

    $537.99
    For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
    See More

    Yukon Gear – Dura Grip For Ford 7.5" (Part No.26034)

    Dura Grip For Ford 7.5"

    from

    $793.99
    The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 in

    Product Features:
    • Fits Ford 7.5″
    • 28 spline
    • 4-spring, clutch style positraction
    • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
    • Fully rebuildable
    • Assembled in the USA
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    Yukon Gear – Friction Modifier / Posi Additive (Part No.15018)

    Friction Modifier / Posi Additive

    from

    $17.99
    Help keep positraction chatter down with posi additive from Yukon Gear & Axle.

    Product Features:
    • positraction additive
    • For use in any clutch-style limited slip
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    Engine Additives Brands You Can Trust For Your Mercury Cougar

    2 trusted brands of Engine Additives line our shelves, ready to help keep your Mercury Cougar running smooth. Below are some of the most popular brands and their top Engine Additives offerings:

    Most Purchased Mercury Cougar Engine Additives from Yukon Gear

    When you buy the most frequently purchased Yukon Gear brand Engine Additives, you can be confident it will be the right part for your Mercury Cougar. Here are the Yukon Gear Engine Additives Advanced Auto customers buy the most:
    Dura Grip For Ford 7.5"
    from $793.99
    This product is not rated
    Dura Grip For Ford 7.5"
    Posi Units and Components
    Friction Modifier / Posi Additive
    from $17.99
    This product is not rated
    Friction Modifier / Posi Additive
    Friction Modifier
    Grizzly Locker For Ford 8" With 28 Spline Axles
    from $931.99
    This product is not rated
    Grizzly Locker For Ford 8" With 28 Spline Axles
    Posi Units and Components