1966 Chevrolet Biscayne Differentials

Keep Your 1966 Chevrolet Biscayne in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1966 Chevrolet Biscayne looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Rear Differential Cover Gaskets, and Rear Housing 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 National, FELPRO, and DriveWorks. For example, National Differentials start at just $7.99 with an average 4.3 star rating. FELPRO and DriveWorks offer similar pricing and quality, backed by strong customer feedback. With over 1,079 reviews and a solid 5 star average, you can shop with confidence knowing other Chevrolet Biscayne owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Chevrolet Biscayne Differential at Advance Auto Parts is around $209.97, with a range that starts at $2.79 and goes up to $1,675.00. With 161 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 Bearing Race start at just $7.99 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 Chevrolet Biscayne in peak condition, inside and out.

Looking for the perfect Differential for your 1966 Chevrolet Biscayne? 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 Chevrolet Biscayne. Whether you’re driving a 1966 model or another popular model year like 1963, 1964, 1965, 1967, 1968, 1969, 1970, 1971, and 1972, 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 Chevrolet Biscayne Differentials

from

$43.99

RngPnnInstlKt

from

$10.99

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.

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

$275.99

8.75″ Chrysler & 55P Chevy Power Lok clutches, Model 20 also, POSI.

Product Features:

Clutch kit
Fits Chrysler 8.75″, 1955-1964 GM passenger car and AMC Model 20 Powr Lok positraction

from

$242.99

Worn or damaged differential end yoke causing driveline vibrations? This direct replacement end yoke matches the original equipment part for a trustworthy repair and reliable performance.

Product Features:

Direct replacement – this differential end yoke matches the fit and construction of the original yoke
Excellent value – this replacement end yoke offers original equipment quality at a fraction of the price of dealer parts
Quality materials – this end yoke is machined from cast iron for strength and is precision machined for reliability
Validated fit – this differential end yoke has been tested to confirm accurate fit

from

$98.99

Product Features:

MINI SPOOL GM 10 BOLT 8.2″ 28 SPLINE

from

$216.99

Product Features:

GM 10BL 8.2 R/P 3.73 MGP

from

$386.99

GM 12P DURA GRIP case, bare, 3.08-3.90, 30spline & 33spline.

Product Features:

Dura Grip positraction carrier case
Does not include spider gears
Fits GM 12 bolt passenger car
3.08 – 3.90 ratios only

from

$30.99

Cross pin shaft for GM 8.2″ posi case. Will fit Yukon Dura Grip or Eaton posi. .749″ diameter.

Product Features:

Cross pin shaft
Fits GM 8.2″
Dura Grip positraction

from

$161.99

Product Features:

Spider gear kit
Fits GM 12 bolt passenger car and truck open differential with 30 spline axles
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

from

$8.99

Positraction clutch guide.

Product Features:

Clutch guide for Chrysler 9.25″, Dana Spicer 44, Dana Spicer 50, Ford 8.8″, GM 12 bolt passenger car, GM 8.2″, 8.5″ and 8.6″, 1963-1979 Corvette and Nissan Titan
Compatible with Dura Grip positractions only

from

$368.99

The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! 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

$8.99

High-quality Differential Carrier Shim Kit

Product Features:

CARRIER SHIMS 12 BOLT GM CAR & TRUCK ALSO GM8.6″ 99-ON

from

$7.99

Standard Open side gear thrust washer for 12P and 12T GM.

Product Features:

Side gear thust washer for GM 12 bolt passenger car and truck
Fits standard open differentials only

from

$804.99

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.

Product Features:

Fits GM 12 bolt passenger car with 30 spline axles
3.08-3.90 ratios 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

$215.99

Bearing race driver. No return.

Product Features:

Bearing race driver
Fits HM89410 race
All steel construction

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

$4.99

3/8″ ring gear bolt washer for GM 12 bolt car & truck, 8.2 BOP & more.

Product Features:

Ring gear bolt washer for GM 12 bolt car and truck, 1955-1964 passenger car, 1963-1979 Corvette and 8.2″ Buick, Oldsmobile and Pontiac

from

$59.99

Product Features:

Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
Interlocking design makes installation much easier

from

$73.99

Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush.

Product Features:

Fits 1955-1964 GM truck and passenger car
Included are a pinion seal, crush sleeve, complete shim kit, marking compound and brush.

from

$11.99

Pinion nut for GM 12 bolt car & truck, 55-62 car & truck, 8.2″, 8.2″ Buick/Olds/Pontiac & 63-79 Corvette. 1 1/8″ socket, 7/8″ x 16 thread.

Product Features:

Pinion nut for GM 12 bolt car and truck, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and 1963-1979 Corvette
7/8″ x 16 thread
1 1/8″ socket

from

$53.99

Product Features:

GM12 BOLT CAR SOLID SPACER & SHIMS

from

$20.99

Product Features:

CRUSH SLEEVE 8.2 GM OEM

from

$17.49

Product Features:

Brand may vary by location

from

$121.99

Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.6″, 12 bolt car and 12 bolt truck differential. This kit contains carrier bearings, races and shims.

Product Features:

Fits GM 12 bolt passenger car and truck and 8.6″
Includes carrier bearings and races and “super” carrier shim kit

from

$10.79

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

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

$11.99

Standard Open pinion gear thrust washer for GM 12P and 12T.

Product Features:

Pinion gear thust washer for GM 12 bolt passenger car and truck
Fits standard open differentials only

from

$4.99

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

$4.99

Dana 44, GM55P & 8.2″ GM pinion gear Thrust washer.

Product Features:

Pinion gear thrust washer for Dana Spicer 44, GM 8.2″ and 1955-1964 GM passenger car

Popular 1966 Chevrolet Biscayne Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Rear Differential Pinion Bearings

Differential Spools

Differential Carrier Bearings

Rear Housing Cover Gaskets

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 Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Gear Thrust Washers

Differential Ring and Pinion Kits

Limited Slip Differential Assemblies

Differential Lock Washers

Differential Clutch Pack Clips

Most Popular Differential Covers for 1966 Chevrolet Biscaynes

Enhance your 1966 Chevrolet Biscayne with one of the 5 Differential Covers we have in stock, starting at just $62.99.

show more show less

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

$255.99

Polished aluminum cover for 8.6″, 8.2″ and 8.5″ GM rear.

Product Features:

Fits GM 8.5″ and 8.6″
Finned polished aluminum

from

$123.99

Product Features:

Fits GM 8.2″, 8.5″ and 8.6″
Steel

from

$278.99

Polished aluminum cover for 12P GM.

Product Features:

Fits GM 12 bolt passenger car
Finned polished aluminum

from

$62.99

Chrome cover for GM 12P.

Product Features:

Fits GM 12 bolt passenger car
Chrome

Best-Selling 1966 Chevrolet Biscayne Rear Differential Cover Gaskets

Upgrade your Biscayne with one of our 4 best-selling Rear Differential Cover Gaskets, earning an average 4.75 stars rating across 8 reviews.

show more show less

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

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

$10.99

12P cover gasket.

Product Features:

Cover gasket
Fits GM 12 bolt passenger car

Top-Quality Rear Housing Cover Gaskets for 1966 Chevrolet Biscaynes

Choose a high-quality OEM or aftermarket Rear Housing Cover Gasket for Chevrolet Biscaynes and enjoy top-notch performance from $10.99.

show more show less

from

$10.99

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

Top Picks for 1966 Chevrolet Biscayne Differential Oil

Invest in one of our 5 durable Differential Oil for your 1966 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

show more show less

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-Rated Differential Bearings for 1966 Chevrolet Biscaynes

Make a smart move for your 1966 Chevrolet Biscayne with products all priced from $4.49 to $28.99.

show more show less

from

$9.29

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

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

$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

$19.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

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

$28.99

Positraction cross pin bolt for GM 12P and 12T.

Product Features:

Cross pin bolt for GM 12 bolt passenger car and truck
For OEM positraction applications only

from

$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

from

$11.29

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

from

$6.99

Cross pin bolt for Chrysler 8.25″, 9.25″ rear, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 7.2″ IFs, 7.5″, 7.6″, 8.0″, 8.25″ IFS & 8.5″.

Product Features:

Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 botl car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS

from

$6.69

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 Chevrolet Biscayne

When it comes to finding the perfect Differential for your 1966 Chevrolet Biscayne, 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, National, and DriveWorks, 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 Chevrolet Biscayne, providing peace of mind with parts that meet or exceed OEM standards.

Popular FELPRO 1966 Chevrolet Biscayne Differentials

If you’re looking for a top-quality Differential for your 1966 Chevrolet Biscayne, 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 $9.74, you’ll find the perfect Differential for your needs and budget. FELPRO Differentials for the 1966 Chevrolet Biscayne 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.

from $8.49

(7)

Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket

“good”

from $10.99

(195)

Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket

“Worked as described”

Top-Quality National 1966 Chevrolet Biscayne Differentials

For those in search of a high-quality Differential for their 1966 Chevrolet Biscayne, 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 $7.99, with an average price of $15.09, 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.

from $27.99

(1)

Multi-Purpose Bearing

“great price”

from $7.99

(4)

Bearing Race

“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”

from $9.29

(2)

Bearing Race

“Reasonable price and woks well. front diff 2006 Escalade esv”

FAQs for 1966 Chevrolet Biscayne Differentials

What are the best-selling Differentials for 1966 Chevrolet Biscaynes?

Out of 161 Differentials that fit 1966 Chevrolet Biscaynes, 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
Bearing Race (3277585) – $7.99

What’s the price range for 1966 Chevrolet Biscayne Differentials?

The prices of Differentials for the 1966 Chevrolet Biscayne range from $2.79 up to $1,675.00 for the most premium parts.

What is the average price of a Differential for a 1966 Chevrolet Biscayne?

The average price for Differentials for the 1966 Chevrolet Biscayne is $209.97. 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 Biscayne model years?

Yes, we carry Differentials for 13 model years of Chevrolet Biscaynes between 1958 and 1972. The following model years are the most popular for Differential purchases: 1972, 1971, 1970, 1969, 1968, 1967, 1965, 1964, and 1963.

What are the cheapest Differentials for my 1966 Chevrolet Biscayne?

The cheapest 1966 Chevrolet Biscayne Differentials we carry are:

Crush Sleeve (10715252) – $2.79
Bearing Race (3277461) – $4.49
Pinion Seal (10751052) – $4.99
Dana 44 Pinion Gear Thrust Washer (11642998) – $4.99
3/8" Ring Gear Bolt Washer For GM 12 Bolt Car & Truck, 8.2 Bop & More (11642511) – $4.99

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

Yes. We stock Differentials for 21 other popular 1966 Chevrolet models. Some of the most popular are 1966 Impala Differentials, 1966 Malibu Differentials, 1966 Corvette Differentials, 1966 Caprice Differentials, and 1966 El Camino Differentials.

What types of Differentials do you sell for my 1966 Chevrolet Biscayne?

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

Can I get help with 1966 Chevrolet Biscayne 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 Biscayne Differentials?

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

1966 Chevrolet Biscayne Differentials

Richmond Gear – RngPnnInstlKt (Part No.83-1022-B)

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

Yukon Gear – 8.75" Chrysler & 55P Chevy Power Lok Clutches, Model 20 Also, Posi (Part No.16148)

Dorman – Differential Pinion Yoke Assembly (Part No.697-553)

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

Motive Gear – Performance Differential Ring and Pinion (Part No.G882373)

Yukon Gear – Dura Grip Case, GM 12 Bolt Car, 3 Series (Part No.20104)

Yukon Gear – Cross Pin Shaft For GM 8.2" Posi Case – Will Fit Dura Grip Or Eaton Posi (Part No.33204)

USA Standard Gear – Spider Gear Kit For GM 12 Bolt Car And Truck (Part No.39021)

Yukon Gear – Positraction Clutch Guide (Part No.33352)

Powertrax – Lock Right Locker (Part No.1921-LR)

Motive Gear – Differential Carrier Shim Kit (Part No.1101)

Yukon Gear – Standard Open Side Gear And Thrust Washer For GM 12 Bolt Car And Truck (Part No.33380)

Yukon Gear – Dura Grip Positraction For GM 12 Bolt Car With 30 Spline Axles, 3.08 To 3.90 Ratio (Part No.26011)

Yukon Gear – Bearing Race Driver (Part No.56017)

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 – 3/8" Ring Gear Bolt Washer For GM 12 Bolt Car & Truck, 8.2 Bop & More (Part No.33347)

Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

Yukon Gear – Minor Install Kit For GM Chevy 55P And 55T Differential (Part No.12047)

Yukon Gear – Pinion Nut (Part No.33150)

Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4101)

Motive Gear – Differential Crush Sleeve (Part No.3106)

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

Yukon Gear – 8.6" GM 12P 12T & F8.8 Carrier Installation Kit (Part No.57010)

National – Bearing Race (Part No.HM89410)

Yukon Gear – Standard Open Pinion Gear Thrust Washer For GM 12P And 12T (Part No.33381)

Pro-King – Differential Pinion Yoke Washer (Part No.742A215)

Yukon Gear – Dana 44 Pinion Gear Thrust Washer (Part No.33281)

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

Yukon Gear – Polished Aluminum Cover For 8.6", 8.2" And 8.5" GM Rear (Part No.32030)

Yukon Gear – Steel Cover For GM 8.2" & 8.5" Rear (Part No.32332)

Yukon Gear – Polished Aluminum Cover For GM 12 Bolt Car (Part No.32101)

Yukon Gear – Chrome Cover For GM 12 Bolt Car (Part No.32011)

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 – GM 12 Bolt Passenger Car Cover Gasket (Part No.23014)

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

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)

National – Bearing Race (Part No.LM501314)

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

National – Tapered Roller Bearing Cone (Part No.LM501349)

National – Bearing Race (Part No.LM67010)

Yukon Gear – Positraction Cross Pin Bolt For GM 12 Bolt Car And Truck (Part No.33344)

FAG US – Cone (Part No.KM86649)

FAG US – Cup (Part No.M88010)

Yukon Gear – Cross Pin Bolt (Part No.33067)

FAG US – Cup (Part No.LM67010)