1977 Pontiac Firebird Differentials

Essential 1977 Pontiac Firebird Differentials

Pro-King – Differential Cover Plug (Part No.742G484)

Differential Cover Plug

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$6.59
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.
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Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)

MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart

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$12.79
Product Features:
  • High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks
  • Long-life friction modifiers and premium base oils help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
  • Enhanced cleaning additives help reduce varnish formation and keep the transmission running properly longer
  • Engineered with a unique blend of viscosity modifiers and base oils to provide better oil flow at low temperatures and greater film protection at higher temperatures
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National – Bearings (Part No.M86649)

Bearings

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$18.79
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Yukon Gear – 18 Plate Steel Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron ‘Vette (Part No.16110)

18 Plate Steel Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron 'Vette

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$483.99
Product Features:
  • Clutch 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
  • 18 piece kit
  • Steel clutches
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Richmond Gear – RngPnnInstlKt (Part No.83-1022-1)

RngPnnInstlKt

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$199.99
RngPnnInstlKt

Yukon Gear – Carrier Installation Kit For GM 8.5" Differential With HD Bearings (Part No.57009)

Carrier Installation Kit For GM 8.5" Differential With HD Bearings

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$148.99
Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.5″ differential with HD bearings for large journal carrier. This kit contains carrier bearings, races and shims. This kit is used in 8.5″ differentials using a Yukon Dura Grip, Eaton posi, ValueTrac, True Trac, Pro-Series Auburn, Detroit Locker or standard carrier with large bearing journals.

Product Features:
  • Fits GM 8.5″ with aftermarket positraction
  • Works with Heavy Duty Bearings
  • Includes carrier bearings and races and “super” carrier shim kit
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USA Standard Gear – Master Overhaul Kit for the ’81 & older GM 7.5" Differential (Part No.37048)

Master Overhaul Kit for the '81 & older GM 7.5" Differential

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$169.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:
  • Fits 1981 and down GM 7.5″
  • Uses Koyo bearings and races
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, oil baffles and slingers, thread locker, marking compound with brush, silicone and gasket.
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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)

Positraction Shim Kit (18 Shims) For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron 'Vette

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$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
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Yukon Gear – 1541H Alloy Rear Axle For 8.2" And 8.5" GM Passenger (Part No.21244)

1541H Alloy Rear Axle For 8.2" And 8.5" GM Passenger

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$273.99
Yukon 1541H alloy rear axle for 8.2″ and 8.5″ GM passenger with a length of 30-1/4″ inches (2.780″ hub) and 28 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a C-clip axle.

Product Features:
  • Fits GM 8.2.” and 8.5″ passenger car
  • 28 spline
  • 30 1/8″ long
  • 2.780″ brake pilot
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Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

Differential Shaft Lock Bolt

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$5.99
This differential pinion shaft lock bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this differential pinion shaft lock bolt matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Pro-King – Differential Cross Shaft (Part No.742G673)

Differential Cross Shaft

from

$28.49
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.
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Yukon Gear – Bearing Race Driver (Part No.56017)

Bearing Race Driver

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$215.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits HM89410 race
  • All steel construction
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Yukon Gear – Positraction Pinion Gear Thrust Washer With Step-Lip Inside For GM 12P And 12T – Fits New Eatons (Part No.33382)

Positraction Pinion Gear Thrust Washer With Step-Lip Inside For GM 12P And 12T - Fits New Eatons

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$14.99
Positraction pinion gear thrust washer with step-lip inside for GM 12P and 12T. fits new Eatons.

Product Features:
  • Pinion gear thust washer for GM 12 bolt passenger car and truck
  • Fits positraction designs only
  • Has inside lip
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Yukon Gear – Replacement Bare Case For GM 8.5" & 8.6" Dura Grip (Part No.20107)

Replacement Bare Case For GM 8.5" & 8.6" Dura Grip

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$386.99
Replacement bare case for GM 8.5″ & 8.6″ Yukon Dura Grip. Fits both 28 & 30 spline applications. This carrier case is for a Yukon Dura Grip ONLY. It is NOT a replacement carrier for a stock positraction.

Product Features:
  • Dura Grip positraction carrier case
  • Does not include spider gears
  • Fits GM 8.5″ and 8.6″
  • Fits 2.76 and up ratios only
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Mr. Gasket – Differential Gasket (Part No.84)

Differential Gasket

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$21.79
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
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Yukon Gear – Posi Spring Kit For GM 7.5", With Preload Plates (Part No.33206)

Posi Spring Kit For GM 7.5", With Preload Plates

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$153.99
Product Features:
  • Positraction spring kit
  • Fits GM 7.5″ and 7.625″ Dura Grip
  • Includes preload plates
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Yukon Gear – Crush Sleeve Eliminator Kit For GM 12 Bolt Car (Part No.55045)

Crush Sleeve Eliminator Kit For GM 12 Bolt Car

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$48.99
12P solid crush sleeve replacement spacer, pinion preload.

Product Features:
  • Crush sleeve eliminator kit for GM 12 bolt passenger car
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Yukon Gear – Conversion Kit (Part No.41184)

Conversion Kit

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$289.99
Product Features:
  • Fits GM 8.2″ Buick, Oldsmobile and Pontiac
  • Adapt GM gears for BOP housing
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Motive Gear – Differential Carrier Gear Kit (Part No.GM7.6BI)

Differential Carrier Gear Kit

from

$159.99


Product Features:
  • INTERNAL KIT-GM 7.6″ W/28 SPLINE
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Yukon Gear – Clutch Guide For GM 7.5" & 7.6" Dura Grip (Part No.33251)

Clutch Guide For GM 7.5" & 7.6" Dura Grip

from

$10.99
Product Features:
  • Clutch guide
  • Fits GM 7.5″ and 7.625″ Dura Grip
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Yukon Gear – Adapter Sleeve Fro GM 7.2", 7.625" & 8.0" Yokes To Use Triple Lip Pinion Seal (Part No.41210)

Adapter Sleeve Fro GM 7.2", 7.625" & 8.0" Yokes To Use Triple Lip Pinion Seal

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$25.99
Yukon 4340 Chrome-Moly replacement outer stub for D44 ’87-’94 Wrangler with a length of 8.31″ and 27 splines. Yukon 4340 Chrome-Moly axles provide up to 50% increased strength over stock axles for use in extreme performance applications with large tires and high horsepower. Yukon’s 4340 axles are manufactured using the latest technologies and the highest quality materials to ensure high strength and long life. Limited Lifetime warranty covers manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through Randy’s ring & pinion) makes final determination on warranty considerations.

Product Features:
  • 27 spline
  • 8.31″ long
  • Fits Dana Spicer 30 in 1987-1994 Wrangler
  • Outer stub
  • 5-760X U-joint size
  • 4340 Chromoly
  • For WARN hub conversion only
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Yukon Gear – Standard Open Side Gear Thrust Washer For 8.5" GM (Part No.33304)

Standard Open Side Gear Thrust Washer For 8.5" GM

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$15.99
Standard open side gear thrust washer for 8.5″ GM.

Product Features:
  • Side gear thrust washer
  • Fits GM 8.5″
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Felpro – Differential Cover Gasket (Part No.RDS 55028-1)

Differential Cover Gasket

from

$9.99
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
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Richmond Gear – Differential Cross Shaft (Part No.80-0270-1)

Differential Cross Shaft

from

$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.
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USA Standard Gear – 12 Bolt GM Spartan Locker Cross Pin (Part No.17023)

12 Bolt GM Spartan Locker Cross Pin

from

$49.99
Product Features:
  • USA Standard Gear heavy-duty cross pin shaft
  • Fits GM 12 bolt car and truck and 9.5″ Toyota Landcruiser
  • Works with Spartan Locker or standard open spider gears
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Yukon Gear – Pinion Install Kit For GM 8.2" Differential For Buick, Pontiac, And Oldsmobile (Part No.13068)

Pinion Install Kit For GM 8.2" Differential For Buick, Pontiac, And Oldsmobile

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.
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Motive Gear – Performance Differential Ring and Pinion (Part No.G885488)

Performance Differential Ring and Pinion

from

$232.99


Product Features:
  • GM 10BL 8.5 R/P 4.88 FRT/REAR MGP
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Motive Gear – Differential Gear Install Kit (Part No.GM8.2IK)

Differential Gear Install Kit

from

$65.99


Product Features:
  • MINI INSTALL KIT GM 10BLT 8.2
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1977 Pontiac Firebird Differentials

Maybe you’re in the middle of a full rebuild of that 1977 Pontiac Firebird. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 256 different Differentials in our inventory ranging from $1.99 to $1,153.99. That means you can find the exact parts or products you need to keep that 1977 Pontiac Firebird running smoothly.

Differentials are only as good as their brand. We stock 13 different brands to make sure you have plenty of trusted parts to choose from for your 1977 Pontiac Firebird. Felpro, Driveworks, and National are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 1977 Pontiac Firebird, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 6,626 reviews in this category, some of the top rated parts include Differential Ring And Pinion with 4.2 stars and Differential Master Bearing Kit – Koyo with 3.8 stars.

So if you’re in the market for aftermarket Differentials to keep your 1977 Pontiac Firebird rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 1977 Pontiac Firebird Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1977 Pontiac Firebird demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Firebird the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular National Differentials

We carry National parts in our stock across Differential Pinion Pilot Bearings and Front Differential Pinion Bearings categories, plus more. For a 1977 Pontiac Firebird, our most popular National Differentials include:
Shaft Repair Sleeve
from $37.99
(1)
Shaft Repair Sleeve
Differential Pinion Pilot Bearings
Bearings
from $15.99
(9)
Bearings
Front Differential Pinion Bearings
Bearings
from $16.99
(25)
Bearings
Differential Bearings

Top 1977 Pontiac Firebird Differentials from Felpro

Felpro products are another trusted brand when it comes to Differentials for your 1977 Pontiac Firebird. Popular Felpro parts include:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets

FAQs for 1977 Pontiac Firebird Differentials

What are the most purchased Differentials for the 1977 Pontiac Firebird?

Out of 256 Differentials for the 1977 Pontiac Firebird, the most popular in our inventory are:
Taper Bearing Set
from $10.29
(38)
Taper Bearing Set
Differential Bearings
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
Differential Pinion Shaft Lock Bolts
Ring Gear Bolt
from $2.49
This product is not rated
Ring Gear Bolt
Differential Ring Gear Bolts

What are the top-rated 1977 Pontiac Firebird Differentials?

Top-rated Differentials for your 1977 Pontiac Firebird based on customer reviews/ratings are:
Differential Ring And Pinion
from $342.99
(23)
Differential Ring And Pinion
“So far so good.”
Differential Master Bearing Kit - Koyo
from $156.99
(5)
Differential Master Bearing Kit – Koyo
“was delivered as promised and on time”
Bearings
from $10.49
(4)
Bearings
“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”