1973 Ring and Pinion Gears

Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-390

3.0 out of 5 stars ( 2 )

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Gear, Ring and Pinion, 3.90:1 Ratio, GM, 12-Bolt Passenger Car, Set

Part Number: MGR-G888390

4.5 out of 5 stars ( 2 )

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Ring and Pinion Gears, 3.90:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: YGA-24159

5.0 out of 5 stars ( 3 )

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Gear, Ring and Pinion, 3.90:1 Ratio, Chevy, Set

Part Number: RMG-4900311

5.0 out of 5 stars ( 1 )

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Ring and Pinion Gears, EXCel, GM 7.5/7.625 in., 3.90:1 Ratio, 27-spline, Standard, for 3.23 or Numerically Higher Ratio Carrier, Chevy, GMC, Olds, Set

Part Number: RMG-GM75390

5.0 out of 5 stars ( 2 )

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Gear, Ring and Pinion, 3.90:1 Ratio, GM, 7.5 in./7.625 in., Standard Rotation, Set

Part Number: MGR-G875390

4.0 out of 5 stars ( 3 )

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Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900341

4.67 out of 5 stars ( 9 )

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Ring & Pinion Gear Set GM 10 Bolt 8.5" / 3.90 Ratio

Part Number: SVL-2020954

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 4, 2026 if ordered today

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Ring and Pinion Kit

Part Number: RMG-CR925390

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Estimated Ship Date: Feb 10, 2026 if ordered today

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Ring and Pinion Gears, 3.90:1 Ratio, Standard Gear Rotation, GM 8.875 in. Passenger Car, Set

Part Number: YGA-24125

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Ring & Pinion Gear Set Chrysler 9.25" / 3.90 Ratio

Part Number: SVL-2020612

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Estimated Ship Date: Feb 4, 2026 if ordered today

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Ring and Pinion Gears, 3.90:1 Ratio, Chrysler 9.25 in., Set

Part Number: YGA-24014

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Ring and Pinion Gears, 3.90:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 489 Case, Set

Part Number: YGA-24011

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Ring & Pinion set, 3.90:1 Ratio, GM "O" Axle, Set

Part Number: YGA-24688

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Estimated Ship Date: Feb 18, 2026 if ordered today

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Gear, Ring and Pinion, 3.90:1 Ratio, GM 7.5 in., GM 7.625 in., 10-bolt, Set

Part Number: RMG-49-0284-1

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Ring and Pinion Gears, Pro Series, 3.90:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-G975390

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Estimated Ship Date: Feb 10, 2026 if ordered today

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Ring and Pinion Gears, 3.90:1 Ratio, 27-spline, Standard Ring Gear Rotation, Chrysler 8.25 in., Set

Part Number: YGA-24003

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Estimated Ship Date: Feb 18, 2026 if ordered today

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Ring and Pinion Gears, 3.90:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 9.25 in., Set

Part Number: SPZ-36019

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Estimated Ship Date: Feb 6, 2026 if ordered today

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Ring and Pinion Gear, 3.90:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36215

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Estimated Ship Date: Feb 9, 2026 if ordered today

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Ring and Pinion Gears, 3.90:1 Ratio, 27-spline, Standard Ring Gear Rotation, Chrysler 8.25 in., Set

Part Number: SPZ-36010

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 3, 2026 if ordered today

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Ring and Pinion Kit

Part Number: RMG-CR825390

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Ring and Pinion Gears, 3.90:1 Ratio, 10-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 742 Case, Set

Part Number: YGA-24009

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Estimated Ship Date: Feb 20, 2026 if ordered today

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Ring and Pinion Kit

Part Number: RMG-GM75390TK

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Estimated Ship Date: Feb 10, 2026 if ordered today

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USA Standard Ring & Pinion gear set for Chrysler 8.75" in a 3.90 ratio

Part Number: SPZ-36016

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Estimated Ship Date: Feb 6, 2026 if ordered today

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