1979 Mercury Grand Marquis Performance Driveline & Axles

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    • (0 reviews)
      # mpn1269721501
      Mercury Grand Marquis with 31 Spline with Ford 9" Series Axle 1979, Rear Zip Locker by Yukon Gear & Axle®. The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential...
      Air operated locker provides on-demand tractionForged case & 8620 internals for added strength
      $839.93
    • (0 reviews)
      # 68628500
      Mercury Grand Marquis 1979, Rear Axle Shaft Kit by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance axles for passenger car, truck and SUV applications. High quality alloys and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $159.99
    • (0 reviews)
      # 503311339
      Mercury Grand Marquis with Ford 7.5" Series Axle with 10 Bolt 1979, Rear Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent replacements for OE. Experienced installers prefer ring and...
      Quiet operationComputer controlled heat treatment
      $227.48 - $232.42
    • (0 reviews)
      # 68628163
      Mercury Grand Marquis 1979, Rear Grizzly Locker by Yukon Gear & Axle®. The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street, off-road, and drag racing. Grizzly Lockers provide 100% power to both tires,...
      Available for many popular off-road & performance applicationsPatent pending design reduces common failures
      $584.48 - $773.39
    • (0 reviews)
      # 503454408
      Mercury Grand Marquis 1979, Rear Dura Grip Positraction by Yukon Gear & Axle®. The Yukon Dura Grip an example of the popular clutch plate limited slips that appeared as OE equipment. Steel clutch plates, half of which are covered with a...
      Provides aggressive yet smooth traction to give you the confidence and performance you needFully rebuildable 4 spring design with composite clutches
      $461.23 - $499.01
    • (0 reviews)
      # mpn2151980348
      Mercury Grand Marquis with Ford 7.5" Series Axle / with Ford 8.8" Series Axle 1979, Rear Axle Shaft by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities....
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $119.75
    • (0 reviews)
      # 503686329
      Mercury Grand Marquis 1979, Rear Standard Open Carrier Case by Yukon Gear & Axle®. Without Spider Gears. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $159.16 - $304.99
    • (0 reviews)
      # mpn2741037526
      Mercury Grand Marquis with Ford 7.5" Series Axle / with Ford 8.8" Series Axle with 28 Spline 1979, Excel™ Rear Axle Shaft Assembly by Richmond®. Manufactured from the highest-quality steel, rear axle shafts are proven to meet or...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $101.68
    • (0 reviews)
      # 68628390
      Mercury Grand Marquis 1979, Rear Differential Master Overhaul Kit by Yukon Gear & Axle®. Yukon Master Overhaul kits give you all the high quality parts you need to start and finish every differential job. Yukon offers more tailor-made...
      Most complete kits on the marketComplete overhaul package to rebuild differential
      $163.38 - $371.58
    • (0 reviews)
      # 503469167
      Mercury Grand Marquis with 28 Spline / with 31 Spline with Ford 9" Series Axle 1979, Rear Dropout Housing by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $386.60 - $442.82
    • (0 reviews)
      # mpn730868151
      Mercury Grand Marquis with 28 Spline with Ford 8.8" Series Axle 1979, Rear Dura Grip Carrier Case by Yukon Gear & Axle®. Without Spider Gears. Dominate the track or hit the trails with confidence by fine tuning your vehicle for...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $240.53
    • (0 reviews)
      # 68628483
      Mercury Grand Marquis 1979, Rear High Performance Ring and Pinion Gear Set by Yukon Gear & Axle®. Yukon Ring and Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether...
      Smooth finishEasy Set-Up
      $208.97 - $970.10
    • (0 reviews)
      # 503344233
      Mercury Grand Marquis with Ford 9" Series Axle 1979, Rear Trac Loc Carrier Case by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $217.44 - $521.02
    • (0 reviews)
      # mpn730868157
      Mercury Grand Marquis with 2 Pinion Design / with 4 Pinion Design with 4 Tab Clutch Design with 28 Spline / with 31 Spline with Ford 9" Series Axle 1979, Rear Trac Loc Carrier Case by Yukon Gear & Axle®. Without Spider Gears. Dominate...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $217.44
    • (0 reviews)
      # 503613175
      Mercury Grand Marquis 1979, Rear Differential Carrier by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo rigid quality...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $87.53 - $289.17
    • (0 reviews)
      # mpn2151980122
      Mercury Grand Marquis with Ford 7.5" Series Axle with 10 Bolt 1979, Rear Performance Ring and Pinion Gear Set by Motive Gear®. Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicle. Gear sets are...
      Central contact patternCNC start to finish
      $203.94
    • (0 reviews)
      # 503368063
      Mercury Grand Marquis with Ford 7.5" Series Axle with 10 Bolt 1979, Rear Street Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and durability matters. Made from...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $212.41 - $214.67
    • (0 reviews)
      # 503620202
      Mercury Grand Marquis 5.0L with 28 Spline with 10 Bolt 1979, HP™ Rear Differential by Auburn Gear®. Type: Limited Slip. High Performance. Auburn Gear’s flagship limited-slip differential gives you smooth torque-sensing operation...
      Expertly crafted from superior materialsProvides exceptional reliability
      $416.16 - $434.52
    • (0 reviews)
      # 503517127
      Mercury Grand Marquis 5.0L with 28 Spline with 10 Bolt 1979, Pro™ Rear Differential by Auburn Gear®. Type: Limited Slip. Turns your torque up another notch, offering an even higher bias ratio and faster sensing reaction than HP for...
      Expertly crafted from superior materialsProvides exceptional reliability
      $474.91 - $506.74
    • (0 reviews)
      # mpn2500668291
      Mercury Grand Marquis 5.0L with 28 Spline with Ford 8.8" Series Axle with 10 Bolt 1979, Road Race™ Rear Differential by Auburn Gear®. Type: Limited Slip. Auburn Gear, LLC. Has developed a performance limited-slip differential...
      Expertly crafted from superior materialsProvides exceptional reliability
      $483.48
    • (0 reviews)
      # mpn2530909935
      Mercury Grand Marquis with Open Differential with 28 Spline with Ford 7.5" Series Axle 1979, Lock Right Locker by Powertrax®. Powertrax Lock-Right performance lockers’ straight-line performance is equal to a solid spool axle, yet they...
      Brute Force Devices For Rugged ApplicationsReplacement Of Differential Case Not Required
      $405.19
    • (0 reviews)
      # 693051981
      Mercury Grand Marquis 1979, Rear Conversion U-Joint by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance products for passenger car, truck and SUV applications. High quality...
      Designed to provide the ultimate in gearing to put all that power to the ground realiablyWill help you get astounding performance for extreme four-wheeling and rock crawling
      $29.19 - $58.03
    • (0 reviews)
      # 82565352
      Mercury Grand Marquis 1979, Rear U-Joint by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance products for passenger car, truck and SUV applications. High quality alloys and the...
      Designed to provide the ultimate in gearing to put all that power to the ground realiablyWill help you get astounding performance for extreme four-wheeling and rock crawling
      $19.28 - $30.75
    • (1 review)
      # 692982705
      Mercury Grand Marquis 1979, Grade Performance™ U-Joint by GMB®. Location: Rear Shaft All Joints. Drive shaft incorporated with universal joint is widely in use not only in automotive industry but also all other industrial scenes....
      Oversized Elliptical Shaped BearingsDesigned to Meet or Exceed O.E. Specifications
      $12.10
    • (0 reviews)
      # 68628516
      Mercury Grand Marquis 1979, Rear Differential Cover by Yukon Gear & Axle®. Yukon provides a full line of OEM style and chrome differential covers. Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $23.21 - $120.36
    • (0 reviews)
      # 68628394
      Mercury Grand Marquis 1979, Rear Flange Yoke by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance products for passenger car, truck and SUV applications. High quality alloys and...
      Designed to provide the ultimate in gearing to put all that power to the ground realiablyWill help you get astounding performance for extreme four-wheeling and rock crawling
      $87.86 - $184.93
    • (0 reviews)
      # 693092654
      Mercury Grand Marquis 1979, Rear Pinion Yoke by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance products for passenger car, truck and SUV applications. High quality alloys and...
      Designed to provide the ultimate in gearing to put all that power to the ground realiablyWill help you get astounding performance for extreme four-wheeling and rock crawling
      $85.80 - $262.81
    • (0 reviews)
      # mpn358493286
      Mercury Grand Marquis C6 Transmission 1979, Rapid Release™ Yoke by Mark Williams®. Designed utilizing the latest technology, this product by Mark Williams features premium quality and will perform better than advertised. Perfect for...
      Designed to ensure unparalleled performance of your vehicleCan handle tremendous power output from your modified engine
      $373.31
    • (0 reviews)
      # 585688312
      Mercury Grand Marquis with Ford 9" Series Axle with 28 Spline / with 31 Spline 1979, Rear Axle Housing End by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance axles for...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $169.70
    • (0 reviews)
      # 68628387
      Mercury Grand Marquis 1979, Rear Differential Bearing Installation Kit by Yukon Gear & Axle®. With Timken Bearings and Races. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $140.38 - $213.68
    • (0 reviews)
      # 87436311
      Mercury Grand Marquis 1979, Rear Differential Carrier Bearing Kit by Yukon Gear & Axle®. Includes: Carrier bearings, races and "super" carrier shim kit. Yukon Carrier installation kits are great, low cost kits for carrier changes such...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $64.70 - $79.20
    • (0 reviews)
      # 87436296
      Mercury Grand Marquis 1979, Rear Differential Mini Installation Kit by Yukon Gear & Axle®. Yukon Mini installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused and includes all high...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $31.31 - $35.01
    • (0 reviews)
      # 68628415
      Mercury Grand Marquis 1979, Rear Differential Pinion Installation Kit by Yukon Gear & Axle®. Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings and races can...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $98.08 - $295.90
    • (0 reviews)
      # 503451540
      Mercury Grand Marquis with Ford 9" Series Axle 1979, Rear Differential Pinion Support by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $94.32 - $417.25
    • (0 reviews)
      # 503322535
      Mercury Grand Marquis 1979, Rear Mini Spool by Yukon Gear & Axle®. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both...
      Provides 100% traction to both wheels at all timesInstalls into standard open carrier case
      $35.69 - $136.17
    • (0 reviews)
      # 503367176
      Mercury Grand Marquis 1979, Rear Spider Gear Set by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential component...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $134.89 - $323.63
    • (0 reviews)
      # 503375370
      Mercury Grand Marquis with Ford 9" Series Axle 1979, Rear Spool by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $199.87 - $229.74
    • (0 reviews)
      # mpn2151979709
      Mercury Grand Marquis with 7.5" Series Axle 1979, Differential Gear Installation Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $36.07
    • (0 reviews)
      # 503521373
      Mercury Grand Marquis with GM 7.5" Series Axle with 10 Bolt 1979, Rear Differential Bearing Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $72.50 - $76.32
    • (0 reviews)
      # mpn1578521304
      Mercury Grand Marquis with 28 Spline with 7.5" Series Axle with 10 Bolt 1979, Rear Differential Carrier Gear Kit by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $120.22
    • (0 reviews)
      # 503412269
      Mercury Grand Marquis with GM 7.5" Series Axle with 10 Bolt 1979, Rear Differential Master Bearing Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $80.43 - $90.29
    • (0 reviews)
      # 503682220
      Mercury Grand Marquis with 10 Bolt 1979, Rear Differential Super Bearing Kit by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $106.76 - $119.58
    • (0 reviews)
      # mpn2741036519
      Mercury Grand Marquis with Ford 7.5" Series Axle 1979, Differential Gear Installation Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $30.28
    • (0 reviews)
      # 68628260
      Mercury Grand Marquis 1979, Rear Differential Cover Gasket by Yukon Gear & Axle®. Yukon provides a full line of OEM style and chrome differential covers. Yukon Gear & Axle manufactures a full line of top quality small parts to complete...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $5.88
    • (0 reviews)
      # mpn2151980123
      Mercury Grand Marquis with Ford 7.5" Series Axle with 10 Bolt Cover 1979, Rear Differential Cover Gasket by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $2.59
    • (0 reviews)
      # 87436294
      Mercury Grand Marquis 1979, Rear Axle Bearing Kit by Yukon Gear & Axle®. With Seal. Upgrade your prized possession with extremely durable high performance axle shafts and components designed to maintain the high level of toughness and...
      Designed for unprecedented off-road performance under harsh, unforgiving conditionsPerfect solution for building a solid axle assembly that will handle extreme loads
      $17.55
    • (0 reviews)
      # 68628134
      Mercury Grand Marquis with Ford 9" Series Axle with 28 Spline / with 31 Spline 1979, Rear Axle Bearing Retainer Plate by Yukon Gear & Axle®. Designed utilizing the latest technology, this product by Yukon Gear & Axle features premium...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $19.31 - $35.19
    • (0 reviews)
      # 68628525
      Mercury Grand Marquis 1979, Rear Axle Mighty Seal by Yukon Gear & Axle®. Designed utilizing the latest technology, this product by Yukon Gear & Axle features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $5.48
    • (0 reviews)
      # 585698923
      Mercury Grand Marquis 1979, Rear Axle Shaft C-Clip by Yukon Gear & Axle®. Yukon Gear and Axle offers an extensive line of general replacement and high performance axles for passenger car, truck and SUV applications. High quality alloys...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $3.61 - $23.21
    • (0 reviews)
      # 68628210
      Mercury Grand Marquis 1979, Rear Axle Stud by Yukon Gear & Axle®. Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs,...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $2.93 - $3.89
    • (0 reviews)
      # mpn730928729
      Mercury Grand Marquis with 28 Spline / with 31 Spline with Ford 9" Series Axle 1979, Rear Axle Bearing Puller by Yukon Gear & Axle®. Type: Clamshell. Dominate the track or hit the trails with confidence by fine tuning your vehicle for...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $336.99
    • (0 reviews)
      # 503606994
      Mercury Grand Marquis 1979, Rear Axle C-Clip by Yukon Gear & Axle®. Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs,...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $3.61 - $23.21
    • (0 reviews)
      # 503334998
      Mercury Grand Marquis 1979, Rear Differential Bearing Race Driver by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $111.18 - $120.06
    • (0 reviews)
      # 503591242
      Mercury Grand Marquis 1979, Rear Differential Bearing Race Punch by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $56.95
    • (0 reviews)
      # 503460494
      Mercury Grand Marquis 1979, Rear Differential Carrier Bearing Puller by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Works with an impact gun to safely and easliy remove carrrier bearingsEnables you to keep your engine in the powerband for more giddy-up and high speed
      $435.16 - $519.86
    • (0 reviews)
      # mpn730925773
      Mercury Grand Marquis with Trac Loc Locker with 28 Spline / with 31 Spline with Ford 9" Series Axle 1979, Rear Differential Clutch Guide by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $1.24
    • (0 reviews)
      # 503696782
      Mercury Grand Marquis 1979, Rear Differential Clutch Set by Yukon Gear & Axle®. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. Designed utilizing the latest technology,...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $119.20 - $295.97
    • (0 reviews)
      # 503300377
      Mercury Grand Marquis with Posi Differential 1979, Rear Differential Cross Pin Bolt by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $3.46
    • (0 reviews)
      # 503494215
      Mercury Grand Marquis 1979, Rear Differential Cross Pin Bolt Extractor Kit by Yukon Gear & Axle®. Designed utilizing the latest technology, this product by Yukon Gear & Axle features premium quality and will perform better than...
      Easily removes a broken cross pin bolt from a carrier caseDesigned to deliver trouble-free, consistent performance
      $46.60
    • (0 reviews)
      # 503575037
      Mercury Grand Marquis 1979, Rear Differential Cross Pin Shaft by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $9.59 - $128.72




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