1985 Pontiac Firebird Drivetrains

Essential 1985 Pontiac Firebird Drivetrains

Dorman – Spindle Nut 3/4 In.-20 Hex Size 1-1/16 In. (Part No.615-065.1)

Spindle Nut 3/4 In.-20 Hex Size 1-1/16 In.

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$6.99
This spindle nut 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 spindle nut matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this nut 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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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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Pro-King – Differential Cross Shaft (Part No.742G930)

Differential Cross Shaft

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$2.79
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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Richmond Gear – Differential Cross Shaft (Part No.CSPGM12)

Differential Cross Shaft

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$27.49
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!

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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Yukon Gear – Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up (Part No.26018)

Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up

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$829.99
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 7.625″ with 28 spline axles
  • 3.23 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
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Yukon Gear – Mini Spool For GM 7.5" With 26 Spline Axles (Part No.32228)

Mini Spool For GM 7.5" With 26 Spline Axles

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$277.99
Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.

Product Features:
  • Fits GM 7.5″ with 26 spline axles
  • Provides 100% traction to both wheels at all times
  • Installs into standard open carrier case
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Yukon Gear – 1541H Alloy Rear Axle For ’82-’89 GM 7.5" Camaro (Drum Brakes) (Part No.21262)

1541H Alloy Rear Axle For '82-'89 GM 7.5" Camaro (Drum Brakes)

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$399.99
Yukon 1541H alloy rear axle for ’82-’89 GM 7.5″ Camaro (drum brakes) with a length of 30-5/16 inches and 26 splines. 2.775″ hub. 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:
  • 26 spline
  • 30 5/16″ long
  • Fits GM 7.5″ in 1982-1989 Camaro
  • Drum brakes only
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Yukon Gear – R1563Tav Rear Axle Bearing And Seal Kit (Part No.10004)

R1563Tav Rear Axle Bearing And Seal Kit

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$42.99
Yukon axle bearing & seal kits are specially designed for each application & use all high quality bearings & seals. R1563TAV axle bearing and seal kit, TorringtonBrand, 2.250″ OD, 1.400″ ID. This axle bearing & seal kit services one side only.

Product Features:
  • Includes axle bearing and seal
  • Services one side
  • Torrington Brand
  • 2.250″ O.D.
  • 1.400″ I.D.
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Motive Gear – Differential Carrier Gear Kit (Part No.GM7.6BI)

Differential Carrier Gear Kit

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$159.99


Product Features:
  • INTERNAL KIT-GM 7.6″ W/28 SPLINE
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Driveworks – Tapered Cup Wheel Bearing Assembly (Part No.S-LM-102910)

Tapered Cup Wheel Bearing Assembly

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$8.49
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Yukon Gear – Positraction Internals For 8.5" GM With 28 Spline Axles (Part No.16052)

Positraction Internals For 8.5" GM With 28 Spline Axles

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$336.99
Yukon positraction internals (0.795″ diameter) for 8.5″ GM with 28 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects. This kit is compatible with Yukon Dura Grip or Eaton positractions. It will not fit a factory Gov-Loc positraction.

Product Features:
  • Spider gear kit
  • Fits GM 8.5″ with 28 spline Dura Grip positraction
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Yukon Gear – C/Clip (Part No.33083)

C/Clip

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$8.99
C/Clip for Chrysler 8.25″, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 8.2″, 8.5″ & 8.6″.

Product Features:
  • c-clip for Chrysler 8.25″, Ford 8.8″, GM 12 bolt car and truck and GM 8.2″, 8.5″ and 8.6″
  • .150″ thick
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Yukon Gear – Pinion Nut Washer (Part No.33166)

Pinion Nut Washer

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$23.99
Pinion nut washer for GM 12 bolt car & truck, 55-62 GM car & truck, GM 8.2″ & 63-79 Corvette.

Product Features:
  • Pinion nut washer for GM 12 bolt car and truck, 1955-1964 GM car and truck, GM 8.2″ and 1963-1979 Corvette.
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National – Shaft Repair Sleeve (Part No.99125)

Shaft Repair Sleeve

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$27.49
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.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Yukon Gear – Bearing Race Driver (Part No.56023)

Bearing Race Driver

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$219.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M88010 race
  • All steel construction
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Yukon Gear – Billet Yoke For GM 12P And 12T With A 1350 U/Joint Size (Part No.41154)

Billet Yoke For GM 12P And 12T With A 1350 U/Joint Size

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$359.99
Yukon billet yoke for GM 12P and 12T with a 1350 U/joint size. 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
  • Outside snap ring design
  • 3.625″ snap ring span
  • 1.188″ cap diameter
  • U-bolt style
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Motive Gear – Performance Differential Ring and Pinion (Part No.G875456)

Performance Differential Ring and Pinion

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$222.99


Product Features:
  • GM 10BL 7.5 &7.625 R/P 4.56 MGP
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National – Multi Purpose Seal (Part No.5200)

Multi Purpose Seal

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$12.99
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.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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Yukon Gear – Set Up Bearing (Part No.56043)

Set Up Bearing

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$119.99
HM89249 set-up bearing (one bearing). No return.

Product Features:
  • Set up bearing
  • Fits HM89249 pinion bearing
  • Easily slips on and off pinion journal to allow for pinion depth adjustment
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MOOG Driveline Products – Greaseable Super Strength Universal Joint (Part No.232)

Greaseable Super Strength Universal Joint

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$36.99
Backed by superior materials and rigorous testing, MOOG Super Strength® universal joints deliver reliable performance you can count on. MOOG problem-solving innovations ensure fast, hassle-free installation.

Product Features:
  • BUILT TO LAST — Rugged design specifically engineered for applications with higher torque and horsepower
  • CORROSION PROTECTION — Exclusive MICRO SHIELD coating protects against rust and corrosion
  • STRONG AND DURABLE — Cold-forged, case-hardened and precision-ground alloy steel crosses for durability
  • KEEPS DIRT OUT — Abrasion-resistant nitrile seals provide ideal grease retention and protection from under-vehicle contaminants
  • GREASABLE DESIGN — Bearing cups feature a radial design to allow 360 Degrees lubricant distribution to all bearing surfaces
  • RIGOROUS TESTING — Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
  • COMPREHENSIVE COVERAGE — Available for foreign and domestic nameplates
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Motive Gear – Differential Super Bearing Kit – Timken (Part No.R12CRSKT)

Differential Super Bearing Kit - Timken

from

$156.99
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!
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Yukon Gear – Super Carrier Shim Kit For Ford 8.8", GM 12 Bolt Car & Truck, 8.6 & Vette (Part No.55002)

Super Carrier Shim Kit For Ford 8.8", GM 12 Bolt Car & Truck, 8.6 & Vette

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$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
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Pro-King – Differential Pinion Shim Kit (Part No.742G202)

Differential Pinion Shim Kit

from

$5.99
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.
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Yukon Gear – U/Joint Strap Bolt For 14T, 7.5", And 8.5" GM (Part No.33351)

U/Joint Strap Bolt For 14T, 7.5", And 8.5" GM

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$8.49
U/joint strap bolt for 14T, 7.5″, and 8.5″ GM.

Product Features:
  • u-joint strap bolt for GM 10.5″ 14 bolt truck, 7.5″ and 8.5″
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Yukon Gear – 8.2" Buick, Oldsmobile, Pontiac Cover Gasket, 10 Bolt Holes (Part No.23019)

8.2" Buick, Oldsmobile, Pontiac Cover Gasket, 10 Bolt Holes

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$13.99
8.2″ Buick, Oldsmobile, Pontiac cover gasket, 10 bolt holes.

Product Features:
  • Cover gasket
  • Fits 8.2″ in Buick, Oldsmobile and Pontiac
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Yukon Gear – Some 8.2 Buick, Oldsmobile, Pontiac, Some 8.5 Oldsmobile Axle Seal, Inner (Part No.30191)

Some 8.2 Buick, Oldsmobile, Pontiac, Some 8.5 Oldsmobile Axle Seal, Inner

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$9.99
SOME 8.2 Buick, Oldsmobile, Pontiac, SOME 8.5 Oldsmobile axle seal, inner.Yukon Mighty seal.

Product Features:
  • Rear axle seal
  • Fits GM 8.2″ in Buick, Oldsmobile and Pontiac
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Motive Gear – Ring Gear Bolt (Part No.14066913)

Ring Gear Bolt

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$2.49


Product Features:
  • RING GEAR BOLT 8.5″ 7.5″ 7/16 X 20 LEFT HAND
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ARP Auto Racing – For Use With General Motors, 0.800" Head L, 3/8" – 24 Thread Size, Chrome Moly (Part No.230-3001)

For Use With General Motors, 0.800"  Head L, 3/8" - 24 Thread Size, Chrome Moly

from

$40.49
The tremendous shock loads generated at launch by most any drag racing vehicle equipped with todays sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. They are forged from premium grade 8740 chrome moly steel and are heat treated to a nominal rating of 200,000 PSI tensile strength. Specially hardened, precision ground washers are included where required. Available to fit most any ring gear setup ranging from popular 9 Inch Ford GM 10 and 12 bolt rear ends to the beefy strange differentials found in top fuel and funny car applications.

Product Features:
  • Forged From Premium Grade 8740 Chrome Moly Steel
  • Heat Treated
  • Nominally Rated At 200,000 Psi Tensile Strength
  • Specially Hardened, Precision Ground Washers
  • 3/8″-24 RH Thread Size
  • 0.8″ Underhead Length
  • 200,000 PSI
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Popular 1985 Pontiac Firebird Drivetrains Categories

1985 Pontiac Firebird Drivetrains

You count on your 1985 Pontiac Firebird to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Drivetrains. With 204 Drivetrains ranging in price from $1.99 to $1,014.99, you’re sure to find everything you need for your 1985 Pontiac Firebird.

Brands matter. If you want to shop a specific Drivetrains brand, we stock 14 different brands like Moog, Driveworks, and National. 1985 Pontiac Firebird Drivetrains start as low as $1.99!

One of the best ways to find top quality OEM or aftermarket Drivetrains is by asking professionals. Short of that, you can shop with confidence thanks to our 4,552 extensive product reviews on 1985 Pontiac Firebird Drivetrains. Some of the top-rated Drivetrains products we carry are Oil Seal with 4.8 stars and Rear Differential Cover with 4.5 stars.

Did we mention you can order your Drivetrains from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Drivetrains inventory for your 1985 Pontiac Firebird below to get started!

Top-Rated Drivetrains Brands For Your 1985 Pontiac Firebird

Trusted Drivetrains OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1985 Pontiac Firebird running right for years to come. In our inventory you’ll find brands like Moog, Driveworks, National, and even more.

Popular Felpro Drivetrains

You’ll find popular Felpro brand products across Differentials. All are waiting to get your 1985 Pontiac Firebird back on the road. Some of the top-rated Felpro products in these categories are:
DIFFERENTIAL GASKET
from $7.99
(45)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets

FAQs for 1985 Pontiac Firebird Drivetrains

What are the most purchased Drivetrains for the 1985 Pontiac Firebird?

Out of 204 Drivetrains for the 1985 Pontiac Firebird, the most popular in our inventory are:
Taper Bearing Set
from $10.29
(38)
Taper Bearing Set
Differential Bearings
Universal Joint
from $15.99
(52)
Universal Joint
U-Joints
Bearings
from $16.99
(39)
Bearings
Axle Shaft Bearings

What are the top-rated 1985 Pontiac Firebird Drivetrains?

Top-rated Drivetrains for your 1985 Pontiac Firebird based on customer reviews/ratings are:
Oil Seal
from $5.49
(38)
Oil Seal
“Exact fit , price was good”
Rear Differential Cover
from $20.99
(38)
Rear Differential Cover
“Looks great, face lift for the rear differential. Old one was rusted & in bad shape. Just remember to get the correct size.”
Bearings
from $16.99
(25)
Bearings
“Fit like it should no issues”