1977 Mercury Cougar Differentials

Essential 1977 Mercury Cougar Differentials

Motive Gear – Differential Bearing Kit – Koyo (Part No.R9R325)

Differential Bearing Kit - Koyo

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$117.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • 9″ BEARING KIT FOR 3.25 HOUSING
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Yukon Gear – Trac Loc Clutch Guide For 9" Ford (Part No.33250)

Trac Loc Clutch Guide For 9" Ford

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$4.99
Trac Loc clutch guide for 9″ Ford.

Product Features:
  • Clutch guide
  • Fits Ford 8″ and 9″
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Yukon Gear – Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25" (Part No.33022)

Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25"

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$8.99
Replacement outer oil slinger for Ford 7.5″, 8.8″, 9″, 10.25″, Nissan Titan rear, Dana 44 Rubicon & 44 JK non-Rubicon.

Product Features:
  • Outer oil slinger for Ford 10.25″, 7.5″, 8.8″ and 9″ also Jeep JK and Nissan Titan rear
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Yukon Gear – Ford 9" 3.250" Aluminum Case, HD Dropout Housing (Part No.32035)

Ford 9" 3.250" Aluminum Case, HD Dropout Housing

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$679.99
9″ Yukon 3.250″ aluminum case, HD dropout housing with forged caps. The Yukon aluminum dropouts feature a adjuster lock which is offset 90 degrees, offering an uninterrupted bearing cap for higher strenth. Made from A356-T6 aluminum and featuring a through-bolt desgin, this dropout is built for high horsepower & tall tires.Rated up to 1000HP!

Product Features:
  • Fits Ford 9″
  • 3.250″ carrier race diameter
  • A356-T6 aluminum
  • Thru-bolt design added strength
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Powertrax – Grip LS Traction System (Part No.LS108831)

Grip LS Traction System

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$463.99
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!
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Yukon Gear – Trac Loc Clutch Hub For 9" Ford With 28 Splines (Part No.16159)

Trac Loc Clutch Hub For 9" Ford With 28 Splines

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$139.99
Trac Loc clutch hub for 9″ Ford with 28 splines.

Product Features:
  • Clutch hub
  • Fits Ford 8″ and 9″ 28 spline Trac Loc
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Yukon Gear – Pinion Nut (Part No.33154)

Pinion Nut

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$7.99
Pinion nut for Ford 7.5″, 8″, 8.8″, 9 3/8″ & 9″. 1 1/6″ socket, 3/4″ x 20 thread.

Product Features:
  • Pinion nut for Ford 7.5″, 8″ and 9″
  • 3/4″ x 20 thread
  • 1 1/6″ socket
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Yukon Gear – Ford 7.5" & 8.8" Ring Gear Bolt, Standard Open & Tracloc (Part No.33053)

Ford 7.5" & 8.8" Ring Gear Bolt, Standard Open & Tracloc

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$5.99
Ford 7.5″ & 8.8″ ring gear bolt, standard Open & TracLoc. 7/16″ x 20.

Product Features:
  • Ring gear bolt for Ford 7.5″ and 8.8″
  • 7/16″ x 20
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Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

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$148.99
Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
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Powertrax – Lock Right Locker (Part No.1830-LR)

Lock Right Locker

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$444.99
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!
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    Yukon Gear – Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1330 U/Joint Size (Part No.41055)

    Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1330 U/Joint Size

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    $203.99
    Yukon yoke (short, for Daytona support) for Ford 9″ with 28 spline pinion and a 1330 U/joint size. 4″ length. 3.625″ snap ring span, 1.125″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

    Product Features:
    • Fits Ford 9″
    • 28 spline
    • 1330 u-joint size
    • Outside snap ring design
    • 3.625″ snap ring span
    • 1.125″ cap diameter
    • U-bolt style
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    Yukon Gear – Bearing Race Driver (Part No.56017)

    Bearing Race Driver

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    $215.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits HM89410 race
    • All steel construction
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    Yukon Gear – One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout (Part No.32157)

    One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout

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    $51.99
    One (1) specialty bearing race to adapt small bearing journal into a 3.250″ dropout. This adapter allows the use of a 28 or 31 spline carrier, positraction or locker in a 3.250″ dropout. This is a perfect solution if you are currently running 28 or 31 spline axles but are looking to upgrade to 35 spline later, or are stepping down from 35 spline but don’t want to buy a new dropout.

    Product Features:
    • Carrier race
    • Fits Ford 9″
    • Conversion race to install small bearing carrier into 3.250″ dropout
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    Yukon Gear – Pinion Install Kit For Ford 9" Differential (Part No.13042)

    Pinion Install Kit For Ford 9" Differential

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    $175.99
    Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

    Product Features:
    • Fits Ford 9″ without aftermarket Daytona pinion support
    • Included are pinion bearings and races, pinion seal, pilot bearing , crush sleeve , complete pinion shim kit, and marking compound with brush.
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    Yukon Gear – Side Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford (Part No.33298)

    Side Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford

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    $6.99
    Side gear thrust washer (0.750″ shaft) for 8.8″ Ford.

    Product Features:
    • Side gear thrust washer for Ford 8.8″
    • 0.750″ diameter cross pin shaft applications only
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    Yukon Gear – Trac Loc Positraction, Ford 8.8", 31 Spline, With Carbon Fiber Clutches (Part No.20130)

    Trac Loc Positraction, Ford 8.8", 31 Spline, With Carbon Fiber Clutches

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    $774.99
    Yukon Trac Loc positraction, Ford 8.8″, 31 spline, with Carbon Fiber clutches.

    Product Features:
    • Trac Loc positraction carrier case
    • Includes spider gears
    • Fits Ford 8.8″ with 31 spline axles
    • Carbon fiber clutches
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    Yukon Gear – Trac Loc For Ford 9" Wtih 31 Spline Axles – Aggressive Design (Part No.26009)

    Trac Loc For Ford 9" Wtih 31 Spline Axles - Aggressive Design

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    $784.99
    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 Trac Loc uses a nodular case, billet side hat, and forged internals for higher strength than stock Trac-Locs. The units use composite clutches for high performance and long life. All units are Rebuildable. Yukon offers a one year warranty against manufacturing defects.

    Product Features:
    • Fits Ford 9″ with 31 spline axles
    • Trac Loc positraction
    • Clutch style positraction
    • Aggressive design
    • 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 – Purple Aluminum Pinion Support For 9" Ford Daytona (Part No.32036)

    Purple Aluminum Pinion Support For 9" Ford Daytona

    from

    $264.99
    Product Features:
    • Fits Ford 9″ with 28 spline pinion
    • Larger inner pinion bearing reduces gear deflection under high load
    • Races installed
    • 6061 aluminum
    • Annodized purple
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    Yukon Gear – Crush Sleeve Eliminator Kit For Ford 9" (Part No.55041)

    Crush Sleeve Eliminator Kit For Ford 9"

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    $68.99
    9″ Ford 2 piece solid preload pinion spacer, Daytona or standard.

    Product Features:
    • Crush sleeve eliminator kit for Ford 9″ with 28 spline pinion
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    USA Standard Gear – Master Overhaul Kit for the Ford 9" LM603011 Differential with Daytona Pinion Support (Part No.37038)

    Master Overhaul Kit for the Ford 9" LM603011 Differential with Daytona Pinion Support

    from

    $273.99
    USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

    Product Features:
    • Fits Ford 9″ with LM603011 carrier races and Daytona pinion support
    • Uses Koyo bearings and races
    • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, pilot bearing, thread locker, marking compound with brush and gasket.
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    Motive Gear – Differential Mini Spool (Part No.MS9-31)

    Differential Mini Spool

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    $31.99


    Product Features:
    • MINI SPOOL 8″ & 9″ 31 SPLN STL 090431
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    National – Bearings (Part No.R-1535-TAV)

    Bearings

    from

    $41.99
    National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

    Product Features:
    • Premium bearing design matches OEM specifications
    • Precision manufactured using premium-grade steel for outstanding durability and performance
    • High radial load capacity makes them suitable for high speed applications
    • Industry leading coverage
    • Professional technicians know they can depend on National
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    Driveworks – Tapered Roller Bearing (Part No.S-LM-603012)

    Tapered Roller Bearing

    from

    $6.79
    Product Features:
    • Brand may vary by location
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    USA Standard Gear – Spartan Locker For Ford 9", 28 Or 31 Spline (Part No.17042)

    Spartan Locker For Ford 9", 28 Or 31 Spline

    from

    $579.99
    The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect. This unit uses the factory side gears.

    Product Features:
    • Fits Ford 8″ and 9″ with 28 or 31 spline axles
    • Made from 9310 steel for added strength
    • Works with stock side gears in standard carrier case
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    Motive Gear – Differential Carrier Gear Kit (Part No.F9-IO28)

    Differential Carrier Gear Kit

    from

    $111.99


    Product Features:
    • INT KT 8″ AND 9″ OPEN 28 SPL FRD
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    National – Bearings (Part No.M88010)

    Bearings

    from

    $10.49
    National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

    Product Features:
    • Premium bearing design matches OEM specifications
    • Precision manufactured using premium-grade steel for outstanding durability and performance
    • Crowned raceways and rollers to ensure even load distribution for maximum life
    • Industry leading coverage
    • Professional technicians know they can depend on National
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    Pro-King – Shim Kit (Part No.741A200)

    Shim Kit

    from

    $19.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • All products are designed to meet or exceed OE quality, form, fit and funtion.
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    Pro-King – Differential Pinion Shim Kit (Part No.742G202)

    Differential Pinion Shim Kit

    from

    $5.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • All products are designed to meet or exceed OE quality, form, fit and funtion.
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    1977 Mercury Cougar Differentials

    Maybe you’re in the middle of a full rebuild of that 1977 Mercury Cougar. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 317 different Differentials in our inventory ranging from $1.99 to $1,211.99. That means you can find the exact parts or products you need to keep that 1977 Mercury Cougar running smoothly.

    Differentials are only as good as their brand. We stock 12 different brands to make sure you have plenty of trusted parts to choose from for your 1977 Mercury Cougar. National, Yukon Gear, and Dorman are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

    We know you’ll find the perfect Differentials for your 1977 Mercury Cougar, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 363 reviews in this category, some of the top rated parts include Multi Purpose Seal with 5.0 stars and Shaft Repair Sleeve with 5.0 stars.

    So if you’re in the market for aftermarket Differentials to keep your 1977 Mercury Cougar rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

    Differentials Brands To Make Your 1977 Mercury Cougar Last

    Simple repair, complete replacement, or a full rebuild. No matter the job, your 1977 Mercury Cougar demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Cougar the best it can be. Be sure to browse some of our top Differentials brands and parts.

    Popular Felpro Differentials

    We carry Felpro parts in our stock across Automatic Transmission Differential Carrier Gaskets categories, plus more. For a 1977 Mercury Cougar, our most popular Felpro Differentials include:
    Differential Carrier Gasket
    from $8.49
    (9)
    Differential Carrier Gasket
    Automatic Transmission Differential Carrier Gaskets

    Top 1977 Mercury Cougar Differentials from National

    National products are another trusted brand when it comes to Differentials for your 1977 Mercury Cougar. Popular National parts include:
    Bearings
    from $15.99
    (9)
    Bearings
    Front Differential Pinion Bearings
    Bearings
    from $6.99
    (6)
    Bearings
    Differential Bearings
    Bearings
    from $10.49
    (4)
    Bearings
    Rear Differential Pinion Bearings

    FAQs for 1977 Mercury Cougar Differentials

    What are the most purchased Differentials for the 1977 Mercury Cougar?

    Out of 317 Differentials for the 1977 Mercury Cougar, the most popular in our inventory are:
    3 Qt - Penzoil 80W90 Conventional Gear Oil
    from $44.99
    This product is not rated
    3 Qt – Penzoil 80W90 Conventional Gear Oil
    Differential Oil
    Pinion Crush Sleeves
    from $5.99
    This product is not rated
    Pinion Crush Sleeves
    Differential Crush Sleeves
    Tapered Cup Wheel Bearing Assembly
    from $8.49
    This product is not rated
    Tapered Cup Wheel Bearing Assembly
    Differential Bearings

    What are the top-rated 1977 Mercury Cougar Differentials?

    Top-rated Differentials for your 1977 Mercury Cougar based on customer reviews/ratings are:
    Multi Purpose Seal
    from $15.79
    (3)
    Multi Purpose Seal
    “good quality”
    Shaft Repair Sleeve
    from $37.99
    (1)
    Shaft Repair Sleeve
    “Very delicate piece, but came shipped quite safely and not damaged. High quality.”
    Differential Pinion Nut
    from $6.49
    (1)
    Differential Pinion Nut
    “If a pinion nut is ever removed from the pinion shaft, it is recommended NOT to reuse it. Replace it with a BRAND NEW nut, even if the old nut is rel”