1978 Chevrolet Impala Differentials

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Keep Your 1978 Chevrolet Impala in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1978 Chevrolet Impala looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Rear Housing Cover Gaskets, and Differential Oil. 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, Felpro, and National. For example, Motive Gear Differentials start at just $3.99 with an average 4.1 star rating. Felpro and National offer similar pricing and quality, backed by strong customer feedback. With over 1,074 reviews and a solid 4.2 star average, you can shop with confidence knowing other Chevrolet Impala owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Chevrolet Impala Differential at Advance Auto Parts is around $205.55, with a range that starts at $0.91 and goes up to $1,015.00. With 257 options in stock from 15 trusted brands, finding the right fit is easy. Popular picks like Driveworks Taper Bearing Set, S-A-6, Dorman – Help Differential Shaft Lock Bolt, 81048, and Motive Gear Ring Gear Bolt, 14066913 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 1978 Chevrolet Impala in peak condition, inside and out.

Essential 1978 Chevrolet Impala Differentials

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 Rear Axle Shaft, Left Or Right, 630-114A (Part No.630-114A)

Dorman Rear Axle Shaft, Left Or Right, 630-114A

from

$129.99
This axle shaft is designed to match the performance of the original equipment shaft on specified vehicle makes, models and years. When a factory axle shaft fails or is damaged by rust or collision, this replacement is engineered to help restore and ensure the proper transfer of torque and rotational power from the differential or transmission to the wheel.
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National – National Shaft Repair Sleeve, 99170 (Part No.99170)

National Shaft Repair Sleeve, 99170

from

$47.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
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Pro-King – Pro-King Differential Pinion Shim Kit, 742G200A (Part No.742G200A)

Pro-King Differential Pinion Shim Kit, 742G200A

from

$18.49
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Yukon Gear – Yukon Gear Differential Cover B, 33572 (Part No.33572)

Yukon Gear Differential Cover B, 33572

from

$7.99
Yukon Gear Differential Cover B, 33572.
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National – National Bearing Race, LM501314 (Part No.LM501314)

National Bearing Race, LM501314

from

$11.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Yukon Gear – Yukon Gear Dura Grip Spider Gear Set for GM 12P/12T Diffs with 33 Spline Axles, 16040 (Part No.16040)

Yukon Gear Dura Grip Spider Gear Set for GM 12P/12T Diffs with 33 Spline Axles, 16040

from

$305.99
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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Yukon Gear – "Yukon Gear Posi Spring Kit for GM 7.5"", with Preload Plates, 33206" (Part No.33206)

"Yukon Gear Posi Spring Kit for GM 7.5"", with Preload Plates, 33206"

from

$153.99
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 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 Pinion Install Kit for GM 8.2"" Differential, 13066" (Part No.13066)

"Yukon Gear Pinion Install Kit for GM 8.2"" Differential, 13066"

from

$259.99
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 Depth Shim Kit for Toyota8"", GM 7.5"", 8.2"" & 12 Bolt Truck, 55064" (Part No.55064)

"Yukon Gear Pinion Depth Shim Kit for Toyota8"", GM 7.5"", 8.2"" & 12 Bolt Truck, 55064"

from

$39.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.
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Yukon Gear – "Yukon Gear Posi 12-Shim Kit, GM 8.2""/Gm 8.5""/12T/12P/Ford 8.8""/Cast Iron Vette, 16042" (Part No.16042)

"Yukon Gear Posi 12-Shim Kit, GM 8.2""/Gm 8.5""/12T/12P/Ford 8.8""/Cast Iron Vette, 16042"

from

$41.99
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 other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.
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Yukon Gear – "Yukon Gear Forged Yoke for GM 8.5"" with A 1350 U/Joint Size., 41093" (Part No.41093)

"Yukon Gear Forged Yoke for GM 8.5"" with A 1350 U/Joint Size., 41093"

from

$359.99
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.
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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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Yukon Gear – Yukon Gear Minor Install Kit for GM Chevy 55P and 55T Differential, 12047 (Part No.12047)

Yukon Gear Minor Install Kit for GM Chevy 55P and 55T Differential, 12047

from

$73.99
Yukon Minimum Installation Kits are a low-cost solution for ring and pinion gear changes in newer vehicles where the bearings can be reused. Kits include all high-quality components for a smooth differential set up.
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Yukon Gear – "Yukon Gear GM 55, 8.2"", 12P, and 12T Standard Open Cross Pin Bolt, 33068" (Part No.33068)

"Yukon Gear GM 55, 8.2"", 12P, and 12T Standard Open Cross Pin Bolt, 33068"

from

$7.99
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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National – National Bearing Race, HM89410 (Part No.HM89410)

National Bearing Race, HM89410

from

$11.49
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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USA Standard Gear – USA Standard Gear Differential Open Unit/Component, 59011 (Part No.59011)

USA Standard Gear Differential Open Unit/Component, 59011

from

$139.99
USA Standard Gear Differential Open Unit/Component, 59011.
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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 Ring Gear Bolt, 33049 (Part No.33049)

Yukon Gear Ring Gear Bolt, 33049

from

$6.99
“Ring gear bolt for GM 7.5″”, 7.6″”, 7.6″” IRS, 8.0″”, 8.25″” IFS, 8.5″”, 8.6″” & 8.6″” IRS. 7/16″” x 20.”
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Powertrax – Powertrax Differential Lock Assembly, 1931-LR (Part No.1931-LR)

Powertrax Differential Lock Assembly, 1931-LR

from

$444.99
For vehicles that are driven daily, the Power Trax 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 Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax 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 – "Yukon Gear Standard Open Carrier Case, GM 7.625"", 3.23 & Up, 20089" (Part No.20089)

"Yukon Gear Standard Open Carrier Case, GM 7.625"", 3.23 & Up, 20089"

from

$349.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.
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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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Motive Gear – Motive Gear Differential Pinion Nut, 1260823 (Part No.1260823)

Motive Gear Differential Pinion Nut, 1260823

from

$10.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Yukon Gear – "Yukon Gear 8.6"" GM 12P 12T & F8.8 Carrier Installation Kit, 57010" (Part No.57010)

"Yukon Gear 8.6"" GM 12P 12T & F8.8 Carrier Installation Kit, 57010"

from

$121.99
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 Crush Sleeve Eliminator Kit for GM 7.5"" & 8.2"", 55047" (Part No.55047)

"Yukon Gear Crush Sleeve Eliminator Kit for GM 7.5"" & 8.2"", 55047"

from

$40.99
Locking Hub Conversion Kit for ’00-’08 Dodge D60 & 9.25 front, dual rear wheel design. The Yukon worry free Spin Free Kit replaces the vulnerable and expensive factory unit bearings with tapered bearings and races. The result is not only a design which is easier and more economical to service, but one that offers significant increases in mileage per gallon. This hub kit also includes low-profile Yukon Hardcore premium locking hubs, giving you more driving select ability. This kit includes new wheel hubs, spindles, high strength Yukon 4340 Chrome-Moly outer axles, Yukon Hardcore premium locking hubs, Timken bearings, high quality seals and all hardware for installation.
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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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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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Most Popular Differential Bearings for 1978 Chevrolet Impalas

Enhance your 1978 Chevrolet Impala with one of the 2 Differential Bearings we have in stock, starting at just $7.99.

Driveworks – Driveworks Tapered Roller Bearing, S-LM-603012 (Part No.S-LM-603012)

Driveworks Tapered Roller Bearing, S-LM-603012

from

$7.99
Driveworks Tapered Roller Bearing, S-LM-603012.
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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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Best-Selling 1978 Chevrolet Impala Rear Housing Cover Gasket

Upgrade your Impala with our best-selling Rear Housing Cover Gasket.

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-Quality Differential Oil for 1978 Chevrolet Impalas

Choose a high-quality OEM or aftermarket Differential Oil for Chevrolet Impalas and enjoy top-notch performance from $35.99.

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 Picks for 1978 Chevrolet Impala Rear Differential Cover Gaskets

Invest in one of our 5 durable Rear Differential Cover Gaskets for your 1978 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

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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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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Yukon Gear – Yukon Gear 7.5 GM Cover Gasket, 23018 (Part No.23018)

Yukon Gear 7.5 GM Cover Gasket, 23018

from

$11.99
7.5 GM cover gasket. EXTERNAL SUPPLY>FDO>BACK ROOM-FDO>APPLICATION SPECIFIC from Yukon Gear
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Differential Covers for 1978 Chevrolet Impalas

Make a smart move for your 1978 Chevrolet Impala with products all priced from $29.99 to $371.99.

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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B & M – "B & M Cast Aluminum Differential Cover For Gm 8.875"" 12 Bolt Car, 70500" (Part No.70500)

"B & M Cast Aluminum Differential Cover For Gm 8.875"" 12 Bolt Car, 70500"

from

$371.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings. Additional features include a magnetic drain plug for catching ferrous metal particles, a machined B&M logo and all necessary hardware, and easy-to-follow detailed instructions for a quick and simple installation you can do at home. Note: Gasket not included
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B & M – "B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt – Black, 71502" (Part No.71502)

"B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt - Black, 71502"

from

$349.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the bearings, the ring and pinion gears. Additional features include a magnetic drain plug for catching ferrous metal particles, MIL-Spec (MIL-A-8625) black anodized finish, machined B&M logo, and all necessary hardware and easy-to-follow detailed instructions for a quick and simple installation you can do at home.
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B & M – "B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt, 70502" (Part No.70502)

"B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt, 70502"

from

$334.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings. Additional features include a magnetic drain plug for catching ferrous metal particles, a machined B&M logo and all necessary hardware, and easy-to-follow detailed instructions for a quick and simple installation you can do at home.
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Yukon Gear – "Yukon Gear Steel Cover for GM 7.5"" & 7.625"", 32331" (Part No.32331)

"Yukon Gear Steel Cover for GM 7.5"" & 7.625"", 32331"

from

$67.99
These Yukon replacement diff covers are a direct bolt-on.
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Yukon Gear – "Yukon Gear Chrome Cover for 7.5"" GM, 32014" (Part No.32014)

"Yukon Gear Chrome Cover for 7.5"" GM, 32014"

from

$67.99
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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Pro-King – Pro-King Differential Carrier Cover, 741A758 (Part No.741A758)

Pro-King Differential Carrier Cover, 741A758

from

$29.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Top-Rated Differential Brands For Your 1978 Chevrolet Impala

When it comes to finding the perfect Differential for your 1978 Chevrolet Impala, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 15 trusted brands. We carry the most popular Differential brands including Felpro, National, 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 1978 Chevrolet Impala, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1978 Chevrolet Impala Differentials

If you’re looking for a top-quality Differential for your 1978 Chevrolet Impala, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 3 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 $9.99, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1978 Chevrolet Impala come highly rated, with over 247 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”
Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55072
from $9.49
(45)
Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55072
“Some say no need for a gasket and to use gasket sealer only its just as good. I like to make sure that the cover is installed properly to avoid any l”

Top-Quality National 1978 Chevrolet Impala Differentials

For those in search of a high-quality Differential for their 1978 Chevrolet Impala, Advance Auto Parts offers a great selection of National Differentials. With 3 National 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 $11.99, with an average price of $18.59, giving you a range of options to suit your budget. Backed by over 7 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
National Multi-Purpose Seal, 8610
from $18.29
(4)
National Multi-Purpose Seal, 8610
“Perfect”
National Bearing Race, LM501314
from $11.99
(2)
National Bearing Race, LM501314
“good quality & price”
National Tapered Roller Bearing Cone, HM89449
from $25.49
(1)
National Tapered Roller Bearing Cone, HM89449
“This Is The One That Fit My 1971 CHEVY TRUCK 12 BOLT PINION REAR BACK BEARING”

FAQs for 1978 Chevrolet Impala Differentials

What are the best-selling Differentials for 1978 Chevrolet Impalas?

Out of 257 Differentials that fit 1978 Chevrolet Impalas, the following parts are the top sellers:

What’s the price range for 1978 Chevrolet Impala Differentials?

The prices of Differentials for the 1978 Chevrolet Impala range from $0.91 up to $1,015.00 for the most premium parts.

What is the average price of a Differential for a 1978 Chevrolet Impala?

The average price for Differentials for the 1978 Chevrolet Impala is $205.55. 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 Chevrolet Impala model years?

Yes, we carry Differentials for 50 model years of Chevrolet Impalas between 1958 and 2020. The following model years are the most popular for Differential purchases: 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, and 2010.

What are the cheapest Differentials for my 1978 Chevrolet Impala?

The cheapest 1978 Chevrolet Impala Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1978 Chevrolet models?

Yes. We stock Differentials for 23 other popular 1978 Chevrolet models. Some of the most popular are 1978 Malibu Differentials, 1978 Camaro Differentials, 1978 Monte Carlo Differentials, 1978 Corvette Differentials, and 1978 Caprice Differentials.

What types of Differentials do you sell for my 1978 Chevrolet Impala?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1978 Chevrolet Impala:

Can I get help with 1978 Chevrolet Impala Differential orders?

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

What is your return policy for Chevrolet Impala Differentials?

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