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  See more parts for Buick Apollo
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EXCEL from Richmond Differential Ring and Pinion - GM75373TK
EXCEL from Richmond Differential Ring and Pinion - GM75373TK - Image 2 EXCEL from Richmond Differential Ring and Pinion - GM75373TK - Image 2

If you're looking to swap out your old ring and pinion gears, the EXCEL from Richmond Differential Ring and Pinion is a solid choice. These gears are built tough, designed for a range of GM vehicles, and they bring that OEM quality you can rely on without breaking the bank. Whether you're cruising around town or hitting the trails, these gears can handle the job.

What You Get

  • Compatible with GM 7.5"/7.625" (10 Bolt) differentials, so you know it fits a lot of popular models.
  • 3.73 gear ratio—perfect for balancing power and fuel efficiency. You’ll feel the difference when you step on the gas.
  • Ring gear diameter of 7.5 inches and a solid 8620 steel construction means durability is part of the package.
  • With a pinion shaft diameter of 1.438 inches and a spline count of 27, these gears are built to last.
  • Installation is straightforward, especially with the right tools. Just make sure your differential carrier break is 3.08 or lower.

Fitment Details

These gears fit a variety of GM vehicles, including:

  • Buick Regal (1977-1987)
  • Chevrolet Camaro (1982-2002)
  • GMC Jimmy (1983-2005)
  • Pontiac Firebird (1977-2002)
  • And many more—check the full list to see if your ride is included!

Notes

Just a heads up—these are designed for rear and front positions, so you can use them where you need them most. If you’re running larger tires, make sure to check that they clear properly. This setup can clear 33s on some models with just a bit of trimming.

In short, if you're in the market for reliable, affordable ring and pinion gears that won’t let you down, the EXCEL from Richmond is a great pick. They’ve got the specs to back them up and the quality you can trust.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1973-1975
 Buick Apollo
1977-1981
 Buick Century
1991-1996
 Buick Commercial Chassis
1976-1985
 Buick Electra
1977-1983
 Buick Estate Wagon
1975-1985
 Buick LeSabre
1977-1987
 Buick Regal
1977-1978
 Buick Riviera
1991-1996
 Buick Roadmaster
1975-1979
 Buick Skylark
1987-1990
 Cadillac Brougham
1982-1984
 Cadillac DeVille
1982-1990
 Cadillac Fleetwood
1985-2005
 Chevrolet Astro
1987-2001
 Chevrolet Blazer
1982-2002
 Chevrolet Camaro
1977-1996
 Chevrolet Caprice
1977-1987
 Chevrolet El Camino
1977-1985, 1994-1996
 Chevrolet Impala
1983-1986
 Chevrolet K5 Blazer
1973-1983
 Chevrolet Malibu
1978-1988
 Chevrolet Monte Carlo
1976-1979
 Chevrolet Nova
1982-2004
 Chevrolet S10
1983-2005
 GMC Jimmy
1982-1990
 GMC S15
1985-1989, 1991-2000
 GMC Safari
1991-2004
 GMC Sonoma
1991
 GMC Syclone
2006-2010
 Hummer H3
2009-2010
 Hummer H3T
1988
 Isuzu Pickup
1991-2002
 Isuzu Rodeo
1977-1984
 Oldsmobile 98
1991-1994, 1996-2004
 Oldsmobile Bravada
1977-1984
 Oldsmobile Custom Cruiser
1977-1981
 Oldsmobile Cutlass
1978-1984
 Oldsmobile Cutlass Calais
1980-1983
 Oldsmobile Cutlass Cruiser
1978-1980
 Oldsmobile Cutlass Salon
1982-1984
 Oldsmobile Cutlass Supreme
1977-1985
 Oldsmobile Delta 88
1976-1979
 Oldsmobile Omega
1977-2002
 Pontiac Firebird

EXCEL Banner

Who is Excel?

Excel is a brand under Richmond that is best known for its high-quality drivetrain products for the automotive industry. They specialize in creating durable, high-quality differential components used both on the track and on the street. Today, they are the leading brand when it comes to differential components in the market.

Racer’s Brand Of Choice

The company offers premium differential kits and components that are used by many racers everywhere. Their rock-solid design aims to provide maximum performance and safety during extreme and tough driving conditions.

Your Drivetrain Component Experts

For more than 80 years, the company has provided quality aftermarket parts for different industries. It includes the agriculture, construction, marine, and automotive sector. They have a wide range of drivetrain products such as spools and mini spools, transmissions, ring and pinion gear, synthetic gear oils, and transmission fluids. They have a comprehensive list of products and even have parts for vehicles made from the 1940s up to the present.

State-of-the-Art Facility

To ensure that all their products come out the way they designed them, the company utilizes the latest and most advanced equipment available in the market. It allows them to create parts with precision cuts with very minimal tolerances.

Purchase  Excel Products At Vivid Racing

If you are in the market for quality drivetrain components for your vehicle, then Excel is the brand for you. Whether it is a classic car or a modern one, they would have the right set for you. To know more about Excel and what they can offer, visit Vivid Racing and check out their list of products that fit your specific needs.






Installation Instructions

Click to view the Installation Instructions here

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