1981 Mercury Grand Marquis Differentials
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Richmond®Excel™ Rear Ring and Pinion Gear SetMercury Grand Marquis with 10 Bolt 1981, Excel™ Rear Ring and Pinion Gear Set by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised. Perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$189.65 - $269.99 - Motive Gear®Rear A-Line Ring and Pinion Gear SetMercury Grand Marquis with 10 Bolt, Ford 8.8" Series Axle 1981, Rear A-Line Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent replacements for OE. Experienced installers prefer ring...Quiet operationComputer controlled heat treatment$180.88 - $187.32
- Auburn Gear®Grip-N-Loc™ DifferentialMercury Grand Marquis 1981, Grip-N-Loc™ Differential by Auburn Gear®. Auburn Gear’s most advanced limited slip differential, the Grip-N-Loc™, builds upon exclusive technologies found in the previous limited slip line, but is...Upgrades vehicles for safe transfer of increased power/torque across the axleCase material is up to 50% stronger than OE cases$639.73 - $726.02
- Dorman®OE Solutions™ Rear Differential Ring and PinionMercury Grand Marquis 1981, OE Solutions™ Rear Differential Ring and Pinion by Dorman®. The gears of Dorman’s Differential Ring and Pinion are engineered to effectively transfer torque from the driveshaft to the axles. It's robust...Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit$173.61 - $761.61
- Yukon Gear & Axle®Dura Grip™ Rear DifferentialMercury Grand Marquis 1981, Dura Grip™ Rear Differential 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...Provides aggressive yet smooth traction to give you the confidence and performance you needFully rebuildable 4 spring design with composite clutches$761.89 - $799.89
- Yukon Gear & Axle®High Performance Ring and Pinion Gear SetMercury Grand Marquis 1981, 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 it’s on...Smooth finishEasy Set-Up$344.89 - $637.89
- Richmond®Rear Mini SpoolMercury Grand Marquis with Ford 8.8" Series Axle 1981, Rear Mini Spool by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$88.94
- Spicer®SVL™ Rear Ring and Pinion Gear SetMercury Grand Marquis 1981, SVL™ Rear Ring and Pinion Gear Set by Spicer®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...High quality at an affordable priceExpertly made from premium materials$197.10 - $218.93
- Yukon Gear & Axle®DifferentialMercury Grand Marquis 1981, Differential by Yukon Gear & Axle®. Yukon Gear and Axle manufactures a full line of standard open carrier cases for your vehicle. The castings and machining are kept to the highest of standards to produce a...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$383.89 - $389.89
- Yukon Gear & Axle®Grizzly Locker™ Front and Rear DifferentialMercury Grand Marquis with Ford 8.8" Series Axle 1981, Grizzly Locker™ Front and Rear Differential by Yukon Gear & Axle®. The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street, off-road, and drag...Available for many popular off-road & performance applicationsPatent pending design reduces common failures$1,076.89 - $1,099.89
- Yukon Gear & Axle®Rear Mini SpoolMercury Grand Marquis with Ford 8.8" Series Axle 1981, 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...Provides 100% traction to both wheels at all timesInstalls into standard open carrier case$210.89
- Richmond®Excel™ Rear Differential CarrierMercury Grand Marquis Empty Case Housing with 10 Bolt, Ford 7.50" Series Axle 1981, Excel™ Rear Differential Carrier by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality and will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$103.49
- Richmond®Rear Street Gear Ring and Pinion Gear SetMercury Grand Marquis with 10 Bolt 1981, 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 first-run steel, never...Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability$349.99 - $436.99
- Motive Gear®Performance Rear Ring and Pinion Gear SetMercury Grand Marquis with 10 Bolt 1981, Performance Rear 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 made from first-run steel,...Central contact patternCNC start to finish$333.99 - $468.99
- Motive Gear®Performance Rear Ring and Pinion Gear SetMercury Grand Marquis with 10 Bolt 1981, Performance Rear 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 made from first-run steel,...Central contact patternCNC start to finish$333.99 - $468.99
- Motive Gear®Rear Mini SpoolMercury Grand Marquis with 28 Spline, Open Differential, 10 Bolt, GM 8.8" Series Axle 1981, Rear Mini Spool by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$87.81
- Motive Gear®Rear Ring and Pinion Gear SetMercury Grand Marquis 1981, 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 pinions for easy setup, superior...Quiet operationComputer controlled heat treatment$258.93 - $476.99
- Timken®Rear Differential Bearing and Seal KitMercury Grand Marquis 1981, Rear Differential Bearing and Seal Kit by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all...Designed to effectively reduce frictionUltimate load handling capability$75.19 - $152.67
- SKF®Rear Differential Pinion SealMercury Grand Marquis without 9.0" Ring Gear 1981, Rear Differential Pinion Seal by SKF®. Designed utilizing the latest technology, this product by SKF features premium quality and will perform better than advertised. Perfect for your...Superior protection against dirt and waterManufactured with high-quality tested design and materials for correct fit$8.90
- Yukon Gear & Axle®Rear Differential Bearing Installation KitMercury Grand Marquis 1981, 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$199.89
- DT Components®Rear Master Differential Bearing KitMercury Grand Marquis with 7.5" Ring Gear 1981, Rear Master Differential Bearing Kit by DT Components®. Designed utilizing the latest technology, this product by DT Components features premium quality and will perform better than...Direct-fit OE-quality replacement for your factory partHelps restore the proper functionality of your vehicle$137.76
- Timken®Rear Differential Pinion SealMercury Grand Marquis with 7.5" Ring Gear / with 8.0" Ring Gear / with 8.5" Ring Gear 1981, Rear Differential Pinion Seal by Timken®. Timken offers the right seal to keep your vehicle running optimally. Timken seals provide ultimate...Machined rubber sealing edge provides greater accuracy and consistency and a better sealing surfaceAn extra dust lip helps keep harmful contaminants out and protects against rust and corrosion$17.13
- Timken®Rear Differential RaceMercury Grand Marquis 1981, Rear Differential Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by many carmakers, the Timken race is the right choice if you opt for a highly durable...OE quality fit, performance, and reliabilityCost-effective friction management solution$6.76 - $9.92
- SKF®Rear Differential Pinion BearingMercury Grand Marquis without 9.0" Ring Gear 1981, Rear Differential Pinion Bearing by SKF®. When it comes to a top-notch replacement for your worn out factory part, this OE-quality differential component is right what the doctor...Excellent replacement for your worn out or faulty partDesigned to restore original performance and reliability$11.92 - $16.32
- National®Rear Differential Master Bearing KitMercury Grand Marquis with 8.5" Ring Gear, Ford Series Axle 1981, Rear Differential Master Bearing Kit by National®. Designed utilizing the latest technology, this product by National features premium quality and will perform better...Spindle bearing and seal kitIncludes all components required to complete the repair$95.95
- National®Rear Outer Differential Pinion SealMercury Grand Marquis with 7.5" Ring Gear / 8.5" Ring Gear, Ford Series Axle 1981, Rear Outer Differential Pinion Seal by National®. This product is made of high-quality materials to serve you for years to come. Designed using...National oil seals are recognized worldwide for their quality and reliable performance for every type of repair.Design Type: Spring Loaded; Multi-Lip$13.77
- Dorman®OE Solutions™ Rear Differential Bearing KitMercury Grand Marquis with 8.8" Ring Gear 1981, OE Solutions™ Rear Differential Bearing Kit by Dorman®. Do you hear a humming or growling sound as you drive, or a clicking or clunking noise when cornering? If so, your vehicle may need...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$172.41
- Dorman®OE Solutions™ Rear Ring and Pinion Bearing Installation KitMercury Grand Marquis with 8.8" Ring Gear 1981, OE Solutions™ Rear Ring and Pinion Bearing Installation Kit by Dorman®. Dorman’s Differential Bearing Kit allows you to keep all the necessary components for installation of the...Replacement eliminates driveline grinding and whining soundsRobust steel construction ensures durability for years of service$144.67
- ACDelco®Gold™ Differential Carrier Bearing with RaceMercury Grand Marquis with 8.5" Ring Gear / with 8.8" Ring Gear 1981, Gold™ Differential Carrier Bearing With Race by ACDelco®. Designed utilizing the latest technology, this product features premium quality and will perform better...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.89Save: $3.44 (15%)$19.45
- ACDelco®Gold™ Differential Pinion SealMercury Grand Marquis with 7.5" Ring Gear / with 8.5" Ring Gear / with 8.8" Ring Gear 1981, Gold™ Differential Pinion Seal by ACDelco®. Designed utilizing the latest technology, this product features premium quality and will perform...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.35Save: $1.07 (15%)$6.28
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1981 Mercury Grand Marquis Models
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