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1981, 1980, 1979, 1978, 1977, 1976, 1975, 1974, 1973, 1972, 1971 Pontiac Firebird Differential Ring and Pinion
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1971 - 1981 Pontiac Firebird Differential Ring and Pinion - Rear (Motive Gear) NEW

Out of Stock
$ 379 .01

Product Notes

Position: Rear
For GM 8.5"/8.625" (10 Bolt); 2.73 Ratio; Requires a 2.73 and Numerically Higher Ratio Carrier
Differential Ring and Pinion
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.
Brand: Motive Gear
Condition: New
See Other Pontiac Firebird Differential Ring and Pinions
LIFE
TIME
Lifetime Warranty Included
This part is backed by our industry-leading lifetime warranty. Shop with total confidence.
100%money-back 120-dayreturns OE-gradequality
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Specifications & Info


Attribute Value
App/Model Gm 8.5, Gm 8.625
Differential Carrier Break 2.73 Ratio And Higher
Differential Case Design Type Gm 8.5, Gm 8.625
Gear Ratio 2.73
Pinion Gear Tooth Quantity 15
Pinion Shaft Diameter 1.626
Pinion Spline Count 30
Ring & Pinion Gear Ratio 2.73
Ring Gear Diameter 8.5
Ring Gear Material 8620 Steel
Ring Gear Outside Diameter 8.5
Ring Gear Rotation Standard
Ring Gear Tooth Quantity 41
Taxonomy A Ld Differential
Taxonomy B Ring And Pinion
Taxonomy C Front, Rear
Taxonomy D 2.73

Vehicle Fitment Guide

This part fits the following vehicles:

Pontiac 1 model (tapclick to expand)(tapclick to hide)
Firebird 1971-1981 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Coupe 1981 V8 4.4L RWD Automatic & Manual
Base Coupe 1980 - 1981 V8 4.3L RWD Automatic & Manual
Base Coupe 1977 - 1981 V6 3.8L RWD Automatic & Manual
Base Coupe 1977, 1979 - 1981 V8 4.9L RWD Automatic & Manual
Base Coupe 1977 - 1980 V8 5.0L RWD Automatic & Manual
Base Coupe 1971 - 1976 L6 4.1L RWD Automatic & Manual
Base Coupe 1971 - 1974 L6 4.1L RWD U/K
Base Coupe 1971 - 1979 V8 5.7L RWD Automatic & Manual
Base Coupe 1971 - 1974 V8 5.7L RWD U/K
Base Coupe 1971 - 1977 V8 6.6L RWD Automatic & Manual
Base Coupe 1971 - 1974 V8 6.6L RWD U/K
Base Coupe 1971 - 1974 V8 7.5L RWD Automatic & Manual & U/K
Esprit Coupe 1981 V8 4.4L RWD Automatic & Manual
Esprit Coupe 1980 - 1981 V8 4.3L RWD Automatic & Manual
Esprit Coupe 1977 - 1981 V6 3.8L RWD Automatic & Manual
Esprit Coupe 1977, 1979 - 1981 V8 4.9L RWD Automatic & Manual
Esprit Coupe 1977 - 1980 V8 5.0L RWD Automatic & Manual
Esprit Coupe 1976 V8 6.6L RWD Automatic & Manual
Esprit Coupe 1975 - 1976 L6 4.1L RWD Automatic & Manual
Esprit Coupe 1975 - 1979 V8 5.7L RWD Automatic & Manual
Esprit Coupe 1971 - 1974 L6 4.1L RWD U/K
Esprit Coupe 1971 - 1974 V8 5.7L RWD U/K
Esprit Coupe 1971 - 1974 V8 6.6L RWD U/K
Esprit Coupe 1971 - 1974 V8 7.5L RWD U/K
Formula Coupe 1981 V6 3.8L RWD Automatic & Manual
Formula Coupe 1981 V8 4.3L RWD Automatic & Manual
Formula Coupe 1981 V8 4.4L RWD Automatic & Manual
Formula Coupe 1980 - 1981 V8 4.9L Turbo RWD Automatic & Manual
Formula Coupe 1977, 1979 - 1981 V8 4.9L RWD Automatic & Manual
Formula Coupe 1977 - 1981 V8 5.0L RWD Automatic & Manual
Formula Coupe 1975 - 1979 V8 5.7L RWD Automatic & Manual
Formula Coupe 1975 - 1979 V8 6.6L RWD Automatic & Manual
Formula Coupe 1971 - 1974 V8 5.7L RWD U/K
Formula Coupe 1971 - 1974 V8 6.6L RWD U/K
Formula Coupe 1971 - 1974 V8 7.5L RWD U/K
Trans Am Coupe 1981 V8 4.4L RWD Automatic & Manual
Trans Am Coupe 1980 - 1981 V8 4.9L Turbo RWD Automatic & Manual
Trans Am Coupe 1980 - 1981 V8 5.0L RWD Automatic & Manual
Trans Am Coupe 1979 - 1981 V8 4.9L RWD Automatic & Manual
Trans Am Coupe 1975 - 1979 V8 6.6L RWD Automatic & Manual
Trans Am Coupe 1975 - 1976 V8 7.5L RWD Automatic & Manual
Trans Am Coupe 1971 - 1974 V8 6.6L RWD U/K
Trans Am Coupe 1971 - 1974 V8 7.5L RWD U/K
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Return Policy

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.

Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.
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.

Interchange Parts

Brand Part Number
Dorman 697-812
General Motors 12471274
General Motors 1258708
General Motors 15103240
General Motors 15581546
General Motors 15588321
General Motors 26018279
General Motors 26019800
General Motors 88963589
General Motors 88963590
Motive Gear G885273
Nitro Gear & Axle GM8.5-273-NG
SVL 2020645
SVL DS2020645
Transtar Industries 742G730A
Yukon Gear and Axle 24490
Yukon Gear and Axle YG GM8.5-273

Fits Years: 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981

Fits Models: Firebird

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120
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Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.

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Engineered To OEM Specs

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