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Richmond Gear 49-0068-1 GM 8.875" 12-Bolt Ring and Pinion Set 3.08 Ratio

(GMC G2500 1979-81, K1500 1979-82, C1500 1979-82, Jimmy 1970-81, C15/C1500 Pickup 1967-74, 1979-81, C2500 1979-81, K1500 Suburban 1979-82 + 56 more models)

Part of: Richmond Gear Excel Differential Ring and Pinion Set

Other options in this family: Richmond Gear F9411 Richmond Gear F88410 Richmond Gear 4900391 Richmond Gear 12BC373T Richmond Gear 6903041

Manufacturer

Picture for manufacturer Richmond Gear

Part Number

4900681
6 reviews
Sale Price

$313.83

4 left at this price

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Usually delivered within 2 days

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Product Details

The Richmond Gear 49-0068-1 is a professional-quality differential ring and pinion set designed for GM 8.875" (12-bolt) truck axles with a 3.08:1 gear ratio. This gear set features spiral bevel gears for superior strength, reliability, and long-term durability, suitable for both street and light-duty off-road applications.

Key Specifications:

  • Gear Ratio: 3.08:1
  • Pinion: 30-spline count with 13 teeth (requires 30-spline pinion yoke for 1963-1964 models)
  • Ring Gear: 40 teeth with 8.875" diameter
  • Pinion Shaft Diameter: 1.438 inches
  • Cover: 12-bolt design
  • Carrier Series: 3 Series (3.07 to 3.73 carrier break)
  • Material: Premium 8620 steel construction

Performance Features:

  • Richmond Lightened Gears design offers up to six pounds reduction in rotating weight
  • Pinion threads are ground to gauge quality to ensure trouble-free installation
  • Computer-controlled manufactured to 1/1000th of an inch precision
  • Special heat treatment process for improved strength and durability

This gear set replaces OEM and aftermarket part numbers including 12BT308, 82-0536-1, and GM12-308. Richmond Gear backs this product with a 2-Year/100,000-Mile warranty for peace of mind. For over 80 years, Richmond's Double Diamond has signified the highest quality gears in the racing industry, with products proven at events like the Daytona 500 and U.S. Nationals.

Note: Installation kit sold separately. Professional installation recommended.

Products specifications

Fits

GMC G2500 1979-81, K1500 1979-82, C1500 1979-82, Jimmy 1970-81, C15/C1500 Pickup 1967-74, 1979-81, C2500 1979-81, K1500 Suburban 1979-82, G25/G2500 Van 1967-81, C1500 Suburban 1979-81, K15/K1500 Pickup 1966-74 + 53 more models

Calculator

Gear Ratio Calculator

Carrier Series

3

Cover Bolts

12

Installation Kit Included

No

Notes

Fits 3.40 ratio and numerically lower

Pinion Gear Teeth

13

Pinion Shaft Diameter (in)

1.438 in.

Pinion Spline Count

30

Quantity

Sold as a set.

Ring and Pinion Ratio

3.08:1

Ring Gear Bolts

12

Ring Gear Diameter (in)

8.875 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

40

Tool

Transmission Lookup

Ring Gear Material

8620 Steel

Ring Gear Tooth Quantity

40

Pinion Shaft Diameter

1.438

Cover Bolt Quantity

12

Ring Gear Diameter

8.875

Pinion Gear Tooth Quantity

13

Differential Carrier Break

3.40 and Lower

Differential Case Design Type

GM 8.875 Truck

Ring and Pinion Gear Ratio

3.08

Ring Gear Bolt Quantity

12

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Position

Rear

Smooth website. Thank you.

Got an error when returning from PayPal page

Easy to locate parts and easy to check out.

Best prices I could find online. Thank you

great price on product and shipping and shipping was very fast

Wonderful experience with seller. Ordered on a Monday night and received on Thursday. Talking about service. Man these guys are awesome. I will be ordering more in the future with Autoplicity. Thanks again!

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