1974 Buick Regal Differentials

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Keep Your 1974 Buick Regal in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1974 Buick Regal looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Differential Oil, and Rear Differential Cover Gaskets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like Motive Gear, Driveworks, and Felpro. For example, Motive Gear Differentials start at just $3.99 with an average 4.1 star rating. Driveworks and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 864 reviews and a solid 4.1 star average, you can shop with confidence knowing other Buick Regal owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1974 Buick Regal Differential at Advance Auto Parts is around $200.29, with a range that starts at $2.59 and goes up to $865.99. With 161 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like Driveworks Taper Bearing Set, S-A-6, Motive Gear Ring Gear Bolt, 14066913, and Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 start at just $2.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Differential, don’t forget to check out other key components like Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1974 Buick Regal in peak condition, inside and out.

Essential 1974 Buick Regal Differentials

USA Standard Gear – USA Standard Gear Differential Rebuild Kit, 37049 (Part No.37049)

USA Standard Gear Differential Rebuild Kit, 37049

from

$209.99
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.
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Driveworks – Driveworks Tapered Roller Bearing, S-M-802048 (Part No.S-M-802048)

Driveworks Tapered Roller Bearing, S-M-802048

from

$17.99
Driveworks Tapered Roller Bearing, S-M-802048.
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Yukon Gear – "Yukon Gear Dura Grip Positraction For GM 8.5"" With 28 Spline Axles, 26015" (Part No.26015)

"Yukon Gear Dura Grip Positraction For GM 8.5"" With 28 Spline Axles, 26015"

from

$859.99
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 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects. This unit has larger bearing journals for added strength & uses heavy-duty carrier bearings & races.
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Dorman – Dorman Differential Cover, 697-701 (Part No.697-701)

Dorman Differential Cover, 697-701

from

$28.99
This direct replacement differential cover matches the fit and function of the original equipment diff cover for a reliable, leak-free repair. It features a durable design, made to strict specifications, to help ensure reliable service life.
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Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55072 (Part No.RDS 55072)

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55072

from

$9.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Yukon Gear – "Yukon Gear 14 Plate Carbon Clutches, GM 8.2""/GM 8.5""/12T/12P/Ford 8.8""/Cast Iron Vette, 16041" (Part No.16041)

"Yukon Gear 14 Plate Carbon Clutches, GM 8.2""/GM 8.5""/12T/12P/Ford 8.8""/Cast Iron Vette, 16041"

from

$404.99
Yukon Gear & Axle clutch kits fit popular GM diffs outfitted with a Yukon Dura Grip positraction unit feature 14 advanced carbon clutch plates, ensuring total traction and long-lasting performance.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, CSPGM75 (Part No.CSPGM75)

Richmond Gear Differential Pinion Shaft, CSPGM75

from

$26.49
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND.
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USA Standard Gear – USA Standard Gear Differential Spider Gear Kits, 39024 (Part No.39024)

USA Standard Gear Differential Spider Gear Kits, 39024

from

$156.99
“Standard Open side gear thrust washer for 7.5″” Ford.”
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Driveworks – Driveworks Wheel Bearing Kit, S-RA-321 (Part No.S-RA-321)

Driveworks Wheel Bearing Kit, S-RA-321

from

$141.99
Driveworks Wheel Bearing Kit, S-RA-321.
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Yukon Gear – "Yukon Gear 8.5"" & 8.2"" GM carrier installation kit, 57008" (Part No.57008)

"Yukon Gear 8.5"" & 8.2"" GM carrier installation kit, 57008"

from

$109.99
Yukon Carrier Installation Kits are a convenient and low-cost solution for carrier changes in cases where one is upgrading to a positraction limited slip differential, a mechanical locker, or an air operated locker. These kits contain carrier bearings and races and a carrier shim kit.
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Yukon Gear – "Yukon Gear 8.5"" GM Extra HD Standard Open Case (Uses Larger Bearings), 20084" (Part No.20084)

"Yukon Gear 8.5"" GM Extra HD Standard Open Case (Uses Larger Bearings), 20084"

from

$232.99
“8.5”” GM EXTRA HD standard Open case (uses larger bearings).”
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Pro-King – Pro-King Differential Cross Shaft, 742G673 (Part No.742G673)

Pro-King Differential Cross Shaft, 742G673

from

$28.49
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Yukon Gear – Yukon Gear 7.5 & 7.625 Standard Open Pinion gear Thrust Washer, 33390 (Part No.33390)

Yukon Gear 7.5 & 7.625 Standard Open Pinion gear Thrust Washer, 33390

from

$8.99
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, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Motive Gear – Motive Gear Differential Master Bearing Kit – Timken, R10REMKT (Part No.R10REMKT)

Motive Gear Differential Master Bearing Kit - Timken, R10REMKT

from

$137.99
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
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Yukon Gear – "Yukon Gear 1541H Alloy Rear Axle for GM 7.5"" Passenger, Monte Carlo and El Camino, 21288" (Part No.21288)

"Yukon Gear 1541H Alloy Rear Axle for GM 7.5"" Passenger, Monte Carlo and El Camino, 21288"

from

$273.99
Yukon Gear & Axle offers an extensive line of general replacement and high-performance axles for passenger car, truck and SUV applications. High quality alloys and the latest in heat-treating technologies provide a stronger-than-stock axle for off-road, on the street, or at the track.
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Yukon Gear – "Yukon Gear Pinion Install Kit for GM 8.5"" Differential, 13069" (Part No.13069)

"Yukon Gear Pinion Install Kit for GM 8.5"" Differential, 13069"

from

$173.99
Yukon Pinion Installation Kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings and races can be reused. This kit features Timken bearings and races along with high-quality seals and small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your gear set.
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Yukon Gear – Yukon Gear Pinion Nut, 33152 (Part No.33152)

Yukon Gear Pinion Nut, 33152

from

$9.99
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, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Pro-King – Pro-King Differential Pinion Gear Washer, 742G216 (Part No.742G216)

Pro-King Differential Pinion Gear Washer, 742G216

from

$2.59
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Richmond Gear – Richmond Gear Differential Mini Spool, 78-1028-1 (Part No.78-1028-1)

Richmond Gear Differential Mini Spool, 78-1028-1

from

$124.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
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Yukon Gear – "Yukon Gear Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2""/8.5""/8.6""/Nis M226, 33352" (Part No.33352)

"Yukon Gear Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2""/8.5""/8.6""/Nis M226, 33352"

from

$8.99
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, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Motive Gear – Motive Gear Differential Gear Install Kit, GM8.5IK (Part No.GM8.5IK)

Motive Gear Differential Gear Install Kit, GM8.5IK

from

$65.99
Motive Gear Differential Gear Install Kit, GM8.5IK.
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Yukon Gear – "Yukon Gear Dura Grip Spider Gear Set for 7.5"" & 7.625"" GM Diff. with 28 Spline Axles, 16117" (Part No.16117)

"Yukon Gear Dura Grip Spider Gear Set for 7.5"" & 7.625"" GM Diff. with 28 Spline Axles, 16117"

from

$279.99
Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
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Pro-King – Pro-King Differential Cover Plug, 742G484 (Part No.742G484)

Pro-King Differential Cover Plug, 742G484

from

$6.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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Yukon Gear – "Yukon Gear Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5"", 8.2"", 8.5"", 12P, 12T, C9.25 Rear Cover Bolt, 33286" (Part No.33286)

"Yukon Gear Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5"", 8.2"", 8.5"", 12P, 12T, C9.25 Rear Cover Bolt, 33286"

from

$9.99
“5/16″”-18 cover bolt, Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, Chrysler 9.25 rear, GM 7.5″”, 7.625″”, 8.2″”, 8.5″”, 12 bolt passenger car and truck.”
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Dorman – Help – Dorman – Help Pinion Crush Sleeves, 81057 (Part No.81057)

Dorman - Help Pinion Crush Sleeves, 81057

from

$5.99
This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.
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Yukon Gear – "Yukon Gear Standard Open Cross Pin (0.795"" Diameter) for 8.5"" GM – Some Eaton Positractions, 33401" (Part No.33401)

"Yukon Gear Standard Open Cross Pin (0.795"" Diameter) for 8.5"" GM - Some Eaton Positractions, 33401"

from

$49.99
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, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Redi Sleeve for GM 8.5"", 9.5"" & 8.2"" BOP Yokes, 30229" (Part No.30229)

"Yukon Gear Redi Sleeve for GM 8.5"", 9.5"" & 8.2"" BOP Yokes, 30229"

from

$57.99
Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.
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Most Popular Differential Bearing for 1974 Buick Regals

Enhance your 1974 Buick Regal with this popular Differential Bearing we have in stock, for $141.99.

Driveworks – Driveworks Wheel Bearing Kit, S-RA-321 (Part No.S-RA-321)

Driveworks Wheel Bearing Kit, S-RA-321

from

$141.99
Driveworks Wheel Bearing Kit, S-RA-321.
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Best-Selling 1974 Buick Regal Differential Oil

Upgrade your Regal with one of our 3 best-selling Differential Oil.

Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)

Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891

from

$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it€™s designed to help prevent leaks, reduce wear and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
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Top-Quality Rear Differential Cover Gaskets for 1974 Buick Regals

Choose a high-quality OEM or aftermarket Rear Differential Cover Gasket for Buick Regals and enjoy top-notch performance from $8.49.

Mr. Gasket – Mr. Gasket Differential Cover Gasket, 84B (Part No.84B)

Mr. Gasket Differential Cover Gasket, 84B

from

$22.19
Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit. Fits 1964-1970 Chevrolet 8.2 inch 10 bolt & 1970-1981 GM 8.5 inch ring gear.
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Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1 (Part No.RDS 55028-1)

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1

from

$11.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket, RDS 55029 (Part No.RDS 55029)

Felpro Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket, RDS 55029

from

$8.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Pro-King – Pro-King Differential Cover Gasket, 742G303A (Part No.742G303A)

Pro-King Differential Cover Gasket, 742G303A

from

$32.49
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Top Picks for 1974 Buick Regal Differential Covers

Invest in one of our 3 durable Differential Covers for your 1974 Buick, knowing you’re getting trusted brands and expert craftsmanship.

Yukon Gear – "Yukon Gear Chrome Cover for 8.6"", 8.5"" and 8.2"" GM Rear, 32017" (Part No.32017)

"Yukon Gear Chrome Cover for 8.6"", 8.5"" and 8.2"" GM Rear, 32017"

from

$74.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.
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Yukon Gear – "Yukon Gear Polished Aluminum Cover for 8.6"", 8.2"" and 8.5"" GM Rear, 32030" (Part No.32030)

"Yukon Gear Polished Aluminum Cover for 8.6"", 8.2"" and 8.5"" GM Rear, 32030"

from

$255.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design made from aluminum and polished to perfection.
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Yukon Gear – "Yukon Gear Steel Cover for GM 8.2"" & 8.5"" Rear, 32332" (Part No.32332)

"Yukon Gear Steel Cover for GM 8.2"" & 8.5"" Rear, 32332"

from

$123.99
These Yukon replacement diff covers are a direct bolt-on.
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Our Rear Housing Cover Gaskets for 1974 Buick Regals

Make a smart move for your 1974 Buick Regal with our Rear Housing Cover Gasket for $8.29.

Victor Reinz – Victor Reinz Axle Housing Cover Gasket, 71-14827-00 (Part No.71-14827-00)

Victor Reinz Axle Housing Cover Gasket, 71-14827-00

from

$8.29
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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Top-Rated Differential Brands For Your 1974 Buick Regal

When it comes to finding the perfect Differential for your 1974 Buick Regal, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 14 trusted brands. We carry the most popular Differential brands including Felpro, Driveworks, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $3.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1974 Buick Regal, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1974 Buick Regal Differentials

If you’re looking for a top-quality Differential for your 1974 Buick Regal, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 2 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $8.49 and an average cost of $10.24, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1974 Buick Regal come highly rated, with over 202 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1
from $11.99
(195)
Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1
“Product easy to put on and easy to work with worked great so far”

Top-Quality Driveworks 1974 Buick Regal Differentials

For those in search of a high-quality Differential for their 1974 Buick Regal, Advance Auto Parts offers a great selection of Driveworks Differentials. With 2 Driveworks Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $10.79, with an average price of $11.39, giving you a range of options to suit your budget. Backed by over 39 customer ratings and an average rating of 4.2 stars, Driveworks Differentials provide both reliability and excellent performance. Choosing a Driveworks Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Driveworks Oil Seal, S-2043
from $10.79
(1)
Driveworks Oil Seal, S-2043
“Didn’t fit my 1992 K1500 10 bolt 8.5″ ring gear rear end. Was told wrong part.”
Driveworks Taper Bearing Set, S-A-6
from $11.99
(38)
Driveworks Taper Bearing Set, S-A-6
“HELPFUL ASSOCIATE”

FAQs for 1974 Buick Regal Differentials

What are the best-selling Differentials for 1974 Buick Regals?

Out of 161 Differentials that fit 1974 Buick Regals, the following parts are the top sellers:

What’s the price range for 1974 Buick Regal Differentials?

The prices of Differentials for the 1974 Buick Regal range from $2.59 up to $865.99 for the most premium parts.

What is the average price of a Differential for a 1974 Buick Regal?

The average price for Differentials for the 1974 Buick Regal is $200.29. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Differentials for other Buick Regal model years?

Yes, we carry Differentials for 37 model years of Buick Regals between 1973 and 2017. The following model years are the most popular for Differential purchases: 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2004, and 2003.

What are the cheapest Differentials for my 1974 Buick Regal?

The cheapest 1974 Buick Regal Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1974 Buick models?

Yes. We stock Differentials for 5 other popular 1974 Buick models. Some of the most popular are 1974 Century Differentials, 1974 LeSabre Differentials, 1974 Riviera Differentials, 1974 Electra Differentials, and 1974 Estate Wagon Differentials.

What types of Differentials do you sell for my 1974 Buick Regal?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1974 Buick Regal:

Can I get help with 1974 Buick Regal Differential orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Buick Differentials and more.

What is your return policy for Buick Regal Differentials?

Advance Auto Parts keeps returns simple. For new Buick Regal Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.