1966 Pontiac GTO Differentials

Keep Your 1966 Pontiac GTO in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1966 Pontiac GTO looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Differential Cover Gaskets, Differential Pinion Seals, 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 DriveWorks, FELPRO, and National. For example, DriveWorks Differentials start at just $7.99 with an average 4.3 star rating. FELPRO and National offer similar pricing and quality, backed by strong customer feedback. With over 23 reviews and a solid 4 star average, you can shop with confidence knowing other Pontiac GTO owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Pontiac GTO Differential at Advance Auto Parts is around $193.54, with a range that starts at $0.91 and goes up to $1,020.00. With 129 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, and Ring Gear Bolt 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 1966 Pontiac GTO in peak condition, inside and out.

Looking for the perfect Differential for your 1966 Pontiac GTO? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your Pontiac GTO. Whether you’re driving a 1966 model or another popular model year like 1968, 1969, 1970, 1971, 1972, 1973, 2004, 2005, and 2006, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.

Essential 1966 Pontiac GTO Differentials

from

$74.99

Chrome cover for 8.6″, 8.5″ and 8.2″ GM rear.

Product Features:

Fits GM 8.2″, 8.5″ and 8.6″
Chrome

from

$282.99

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

Product Features:

Fits 8.2″ Buick, Oldsmobile and Pontiac
Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.

from

$104.99

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

Product Features:

GM 10 BOLT 8.5″ BRG KIT W/EATON OR AUBURN PRO

from

$281.99

MSTR KIT DANA 80

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$551.99

For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.

Powertrax® = Extreme Traction Systems!

from

$20.99

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

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

from

$98.99

Product Features:

MINI SPOOL GM 10 BOLT 8.2″ 28 SPLINE

from

$9.79

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$5.99

Star washer for GM 12 bolt posi cross pin bolt.

Product Features:

Star washer
Fits GM 12 bolt passenger car

from

$209.99

Yukon forged yoke for GM 12P and 12T with a 1350 U/joint size (stronger than billet). 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:

Fits GM 12 bolt passenger car and truck
30 spline
1350 u-joint size
3.625″ snap ring span
1.188″ cap diameter
Outside snap ring design
U-bolt style

from

$41.99

Product Features:

Shim kit
Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ Dura Grip positraction

from

$137.99

Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil

from

$109.99

Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.2″ & 8.5″ differential. This kit contains carrier bearings, races and shims.

Product Features:

Fits GM 7.5″, 7.625″ 8.2″ and 8.5″
Includes carrier bearings and races and “super” carrier shim kit

from

$62.99

Product Features:

8.5 “O” AXLE MINI INSTALLATION KIT

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$64.99

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!

Product Features:

For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.

from

$544.99

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.

Powertrax® = Extreme Traction Systems!

from

$43.99

We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$929.99

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 case is drilled for 3/8″ bolts. Some factory gears use 7/16″ bolts. If your factory gear uses 7/16″ bolts you will need to drill out the ring gear bolt holes.

Product Features:

Fits GM 8.2″ in Buick, Oldsmobile and Pontiac
3.31 ratio and up only
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA

from

$59.99

Product Features:

Super carrier shim kit for Ford 8.8″, GM 12 bolt passenger car and truck, GM 8.0″, 8.6″, 8.6″ IRS and 1963-1979 Corvette
Interlocking design makes installation much easier

from

$264.99

USA Standard axle shaft for 8.2″ Buick, Oldsmobile & Pontiac, bolt in axle. 29 7/8″ long, 28 spline.

Product Features:

Fits 8.2″ Buick, Oldsmobile and Pontiac
28 spline
29 7/8″ long

from

$209.99

Product Features:

Spider gear kit
Fits GM 8.5″ 28 spline open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

from

$544.99

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.

Powertrax® = Extreme Traction Systems!

from

$109.99

12P, 12T, CI VET, & 55GM 8460N REDI sleeve yoke saver.Yukon Mighty seal.

Product Features:

Pinion Redi-sleeve
Fits GM 12 bolt passenger car, 12 bolt truck and 1963-1979 Corvette

from

$0.91

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

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

from

$6.99

Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses t

Product Features:

Pinion nut for Dana Spicer 25, 27, 30, 44, 50 and GM 7.75″
3/4″ x 16 thread

from

$16.99

GM 12 bolt passenger car crush sleeve. Approx 2.340″ long.

Product Features:

Crush sleeve for GM 12 bolt passenger car
2.340″ tall

from

$659.99

Yukon Master Overhaul kits give you all the high quality parts you need to start & finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses Timken bearings and races along with high quality seals and small parts. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), Thread locking compound, and marking compound with brush. Yukon’s Master Overhaul kits are the most comprehensive and complete kits on the market. They do extensive research to ensure that every kit is specially tailored to your application.

Product Features:

Fits 2003-2006 Pontiac GTO
Included are Timken bearings and races, pinion bearings and races, pinion seal, side seals, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush, and silicone.

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$24.29

With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Popular 1966 Pontiac GTO Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Differential Lock Assemblies

Differential Carrier Bearings

Differential Pinion Bearing Kits

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Pinion Shafts

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Lock Washers

Most Popular Rear Differential Cover Gaskets for 1966 Pontiac GTOs

Enhance your 1966 Pontiac GTO with one of the 6 Rear Differential Cover Gaskets we have in stock, starting at just $8.49.

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$11.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$20.99

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 1965-1972 Chevrolet/GM passenger car 12 bolt 8.875-inch ring gear 1965-72 Passenger Car.

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

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.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$24.99

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 1965-1970 Buick, Olds, Pontiac, 10 bolt 8.20 inch ring gear.

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

from

$13.99

8.5″ Oldsmobile 442 & Cutlas 10 bolt ring gear & 12 bolt cover.

Product Features:

Cover gasket
Fits 8.5″ Oldsmobile

from

$13.99

8.2″ Buick, Oldsmobile, Pontiac cover gasket, 10 bolt holes.

Product Features:

Cover gasket
Fits 8.2″ in Buick, Oldsmobile and Pontiac

Best-Selling 1966 Pontiac GTO Differential Pinion Seals

Upgrade your GTO with one of our 6 best-selling Differential Pinion Seals, earning an average 5 stars rating across 2 reviews.

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from

$7.99

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$9.79

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$4.99

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.

from

$9.99

Pinion seal for GM 8.5″, 8.2″, Buick, Oldsmobile, and Pontiac.Yukon Mighty seal.

Product Features:

Pinion seal
Fits GM 8.5″ rear, 8.2″ and 8.2″ in Buick, Oldsmobile and Pontiac

from

$8.29

All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!

from

$14.29

Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Quality Differential Oil for 1966 Pontiac GTOs

Choose a high-quality OEM or aftermarket Differential Oil for Pontiac GTOs and enjoy top-notch performance from $11.99.

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from

$14.49

Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.

Product Features:

Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
Enhanced anti-shudder protection for smooth shifting and maximum power transfer
Developed with anti-wear technology to help improve transmission durability
Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

from

$11.99

Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.

Product Features:

Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
Enhanced anti-shudder protection for smooth shifting and maximum power transfer
Developed with anti-wear technology to help improve transmission durability
Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

from

$148.99

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

Product Features:

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

from

$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

from

$137.99

Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil

Top Picks for 1966 Pontiac GTO Differential Covers

Invest in one of our 2 durable Differential Covers for your 1966 Pontiac, knowing you’re getting trusted brands and expert craftsmanship.

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from

$74.99

Product Features:

Fits 8.2″ Buick, Oldsmobile and Pontiac
Chrome

from

$334.99

Aluminum Girdle cover for 8.2″ Buick, Pontiac, Oldsmobile GM TA HD.

Product Features:

Fits 8.2″ Buick, Oldsmobile and Pontiac
Aluminum girdle cover

Top-Rated Differential Bearings for 1966 Pontiac GTOs

Make a smart move for your 1966 Pontiac GTO with products all priced from $4.49 to $27.99.

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from

$27.99

Product Features:

CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
OE-STYLE DESIGN: Engineered to meet OE specifications
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$4.49

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

Product Features:

PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION — Crowned raceways for even load distribution
OE-STYLE DESIGN — Engineered to meet OE specifications
COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$24.29

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Rated Differential Brands For Your 1966 Pontiac GTO

When it comes to finding the perfect Differential for your 1966 Pontiac GTO, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including FELPRO, DriveWorks, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 Pontiac GTO, providing peace of mind with parts that meet or exceed OEM standards.

Popular FELPRO 1966 Pontiac GTO Differentials

If you’re looking for a top-quality Differential for your 1966 Pontiac GTO, 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 $9.99, you’ll find the perfect Differential for your needs and budget. FELPRO Differentials for the 1966 Pontiac GTO come highly rated, with over 8 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.

from $8.49

(7)

Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket

“good”

from $11.49

(1)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

“Correct for 64-69 factory installed rear axle”

Top-Quality DriveWorks 1966 Pontiac GTO Differentials

For those in search of a high-quality Differential for their 1966 Pontiac GTO, 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 $7.99, with an average price of $8.89, giving you a range of options to suit your budget. Backed by over 2 customer ratings and an average rating of 4.3 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.

from $9.79

(1)

Oil Seal

“Great fitment”

from $7.99

(1)

Oil Seal

“Didn’t fit my 1992 K1500 10 bolt 8.5″ ring gear rear end. Was told wrong part.”

FAQs for 1966 Pontiac GTO Differentials

What are the best-selling Differentials for 1966 Pontiac GTOs?

Out of 129 Differentials that fit 1966 Pontiac GTOs, the following parts are the top sellers:

DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (12079201) – $14.49
DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
Ring Gear Bolt (20520168) – $2.99

What’s the price range for 1966 Pontiac GTO Differentials?

The prices of Differentials for the 1966 Pontiac GTO range from $0.91 up to $1,020.00 for the most premium parts.

What is the average price of a Differential for a 1966 Pontiac GTO?

The average price for Differentials for the 1966 Pontiac GTO is $193.54. 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 Pontiac GTO model years?

Yes, we carry Differentials for 11 model years of Pontiac GTOs between 1964 and 2006. The following model years are the most popular for Differential purchases: 2006, 2005, 2004, 1973, 1972, 1971, 1970, 1969, and 1968.

What are the cheapest Differentials for my 1966 Pontiac GTO?

The cheapest 1966 Pontiac GTO Differentials we carry are:

Differential Ring Gear Bolt (10282203) – $0.91
Crush Sleeve (10715252) – $2.79
Ring Gear Bolt (20520168) – $2.99
Differential Ring Gear Bolt (10282159) – $2.99
Bearing Race (3277461) – $4.49

Does Advance Auto Parts sell Differentials for any other 1966 Pontiac models?

Yes. We stock Differentials for 5 other popular 1966 Pontiac models. Some of the most popular are 1966 Grand Prix Differentials, 1966 Bonneville Differentials, 1966 LeMans Differentials, 1966 Catalina Differentials, and 1966 Tempest Differentials.

What are the top-rated Differentials that fit the 1966 Pontiac GTO?

Based on 23 reviews by customers, our 1966 Pontiac GTO Differentials have an average customer rating of 4 stars. These are the highest-rated categories of Differentials for the 1966 Pontiac GTO and their top-rated products:

Differential Oil
- DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (12079201) – $14.49
Differential Pinion Shims
- Differential Pinion Shim Kit (20520100) – $7.99

What types of Differentials do you sell for my 1966 Pontiac GTO?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1966 Pontiac GTO:

Can I get help with 1966 Pontiac GTO Differential orders?

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

What is your return policy for Pontiac GTO Differentials?

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

1966 Pontiac GTO Differentials

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

Yukon Gear – Pinion Install Kit For GM 8.2" Differential For Buick, Pontiac, And Oldsmobile (Part No.13068)

Motive Gear – Differential Bearing Kit – Koyo (Part No.R10RE)

Motive Gear – Differential Master Bearing Kit – Timken (Part No.R80RMKT)

Powertrax – No-Slip Traction System (Part No.9207883005)

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

Motive Gear – Differential Mini Spool (Part No.MS10C-28)

Driveworks – Oil Seal (Part No.S-8460N)

Yukon Gear – Star Washer For GM 12 Bolt Posi Cross Pin Bolt (Part No.33348)

Yukon Gear – Forged Yoke For GM 12P And 12T With A 1350 U/Joint Size (Part No.41069)

Yukon Gear – Positraction Shim Kit (18 Shims) For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron ‘Vette (Part No.16042)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Yukon Gear – 8.5" & 8.2" GM Carrier Installation Kit (Part No.57008)

Motive Gear – Differential Gear Install Kit (Part No.GM8.5OIK)

Richmond Gear – Differential Cross Shaft (Part No.80-0269-1)

Powertrax – No-Slip Traction System (Part No.9207822805)

FAG US – Bearing – CRB (Cylindrical Roller Bearing) (Part No.FC67147)

Yukon Gear – Duragrip Posi For 8.2" Buicks, Olds & Pontiac With 28 Spline Axles (Part No.26024)

Yukon Gear – Super Carrier Shim Kit For Ford 8.8", GM 12 Bolt Car & Truck, 8.6 & Vette (Part No.55002)

USA Standard Gear – Axle Shaft For 82" Buick, Oldsmobile & Pontiac, Bolt In Axle 29 7/8" Long, 28 Spline (Part No.35060)

USA Standard Gear – Standard Spider Gear Set For GM 8.5", 28 Spline (Part No.39026)

Powertrax – No-Slip Traction System (Part No.9207853005)

Yukon Gear – 12P, 12T, CI Vet, & 55GM 8460N Redi Sleeve Yoke Saver (Part No.30225)

Pro-King – Differential Ring Gear Bolt (Part No.742J935)

Yukon Gear – Replacement Pinion Nut For Dana 25, 27, 30, 36, 44, 53 & GM 7.75" (Part No.33143)

Yukon Gear – GM 12 Bolt Passenger Car Crush Sleeve (Part No.33104)

Yukon Gear – Master Overhaul Kit For GM 7.75Irs Differential, ’04-’06 Gto (Part No.14167)

FAG US – Cone (Part No.KM86649)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 13410)

Mr. Gasket – Differential Gasket (Part No.84A)

Felpro – Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket (Part No.RDS 55029)

Mr. Gasket – Differential Gasket (Part No.84)

Yukon Gear – 8.5" Oldsmobile 442 & Cutlas 10 Bolt Ring Gear & 12 Bolt Cover (Part No.23022)

Yukon Gear – 8.2" Buick, Oldsmobile, Pontiac Cover Gasket, 10 Bolt Holes (Part No.23019)

Driveworks – Oil Seal (Part No.S-2043)

Driveworks – Oil Seal (Part No.S-8460N)

Motive Gear – Pinion Seal (Part No.8610)

Yukon Gear – Pinion Seal For GM 8.5", 8.2", Buick, Oldsmobile, And Pontiac (Part No.30017)

Motive Gear – Differential Pinion Seal (Part No.8460N)

FAG US – Shaft Seal (Part No.SS2983)

Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Yukon Gear – Chrome Cover For 8.2" Buick, Oldsmobile, And Pontiac GM (Part No.32015)

Yukon Gear – Aluminum Girdle Cover For 8.2" Buick, Pontiac, Oldsmobile GM Ta HD (Part No.32120)

National – Multi-Purpose Bearing (Part No.A-36)

National – Bearing Race (Part No.LM67010)

FAG US – Cone (Part No.KM86649)