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RING & PINION GEAR SETS
For use with Chrysler Axles

Sierra Gear & Axle has a complete inventory of Ring & Pinion Gear Sets for use with Chrysler axles.

Our Ring and Pinion sets are reasonably priced and are the highest quality aftermarket gear sets available. Ring and Pinion Gear Sets from Sierra Gear are engineered and manufactured for easy setup, quiet operation and long life.

Complete your differential ratio change, rebuild, repair or overhaul with one of our Differential Repair and Installation Kits.

Not sure which ring and pinion gear ratio you want? Use our Differential Gear Ratio Calculator or call one of our technical experts for advice.

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Application Chart:

Ring and Pinion Gear Sets for use with Chrysler Differentials

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CHRYSLER AXLES – Ring and Pinion Gear Sets

7.25″ Chrysler Ring & PinionSierra Gear & Axle Part #
7.25″ Chrysler 3.55 Ratio R&PSG C7.25-355
7.25″ Chrysler 3.90 Ratio R&PSG C7.25-390
7.25″ Chrysler 4.10 Ratio R&PSG C7.25-411
8″ Chrysler IFS Ring & PinionSierra Gear & Axle Part #
8″ Chrysler IFS 3.91 Ratio R&PSG C8-391
8″ Chrysler IFS 4.10 Ratio R&PSG C8-411
8″ Chrysler IFS 4.56 Ratio R&PSG C8-456
8.25″ Chrysler Ring & PinionSierra Gear & Axle Part #
8.25″ Chrysler 3.08 Ratio R&P Double Drilled for Early/LateSG C8.25-308D
8.25″ Chrysler 3.21 Ratio R&PSG C8.25-321
8.25″ Chrysler 3.55 Ratio R&PSG C8.25-355
8.25″ Chrysler 3.73 Ratio R&PSG C8.25-373
8.25″ Chrysler 3.90SG C8.25-390
8.25″ Chrysler 3.90 Ratio R&PSG C8.25-390
8.25″ Chrysler 3.90 Ratio R&P Double Drilled for Early/LateSG C8.25-390D
8.25″ Chrysler 4.11 Ratio R&PSG C8.25-411
8.25″ Chrysler 4.88SG C8.25-488
8.25″ Chrysler 5.13 Ratio R&P Double Drilled for Early/LateSG C8.25-5.13
8.75″ Chrysler Ring & PinionSierra Gear & Axle Part #
8.75″ Chrysler 3.55 Ratio R&P 741 Case – Fine ThreadSG C8.75-355-41 FINE
8.75″ Chrysler 3.73 Ratio R&P 741 Case – Fine ThreadSG C8.75-373-41 FINE
8.75″ Chrysler 3.23 Ratio R&P 742 Case – Coarse ThreadSG C8.75-323-42 COARSE
8.75″ Chrysler 3.55 Ratio R&P 742 Case – Coarse ThreadSG C8.75-355-42 COARSE
8.75″ Chrysler 3.73 Ratio R&P 742 Case – Coarse ThreadSG C8.75-373-42 COARSE
8.75″ Chrysler 3.91 Ratio R&P 742 Case – Coarse ThreadSG C8.75-390-42 COARSE
8.75″ Chrysler 4.10 Ratio R&P 742 Case – Coarse ThreadSG C8.75-411-42 COARSE
8.75″ Chrysler 4.56 Ratio R&P 742 Case – Coarse ThreadSG C8.75-456-42 COARSE
8.75″ Chrysler 3.55 Ratio R&P 489 Case – Fine ThreadSG C8.75-355-89 FINE
8.75″ Chrysler 3.73 Ratio R&P 489 Case – Fine ThreadSG C8.75-373-89 FINE
8.75″ Chrysler 3.90 Ratio R&P 489 Case – Fine ThreadSG C8.75-390-89 FINE
8.75″ Chrysler 4.10 Ratio R&P 489 Case – Fine ThreadSG C8.75-411-89 FINE
8.75″ Chrysler 4.56 Ratio R&P 489 Case – Fine ThreadSG C8.75-456-89 FINE
9.25″ Rear Chrysler Ring & PinionSierra Gear & Axle Part #
9.25″ Chrysler 3.21 Ratio R&PSG C9.25-321
9.25″ Chrysler 3.55 Ratio R&PSG C9.25-355
9.25″ Chrysler 3.55 Ratio R&P Premium 2-CutSGPC9.25-355
9.25″ Chrysler 3.55 Ratio R&P Premium Dry-Cut Double Drilled including ’14 & UpSGPC9.25-355DCD
9.25″ Chrysler 3.90 Ratio R&P 47 x 12SG C9.25-390
9.25″ Chrysler 3.90 Ratio R&P Premium 2-CutSGPC9.25-390
9.25″ Chrysler 3.90 Ratio R&P Double Drilled 2011 & UpSG C9.25-390B
9.25″ Chrysler 3.90 Ratio R&P Premium Dry-Cut Double Drilled 2011 & UpSGPC9.25-390DCD
9.25″ Chrysler 4.10 Ratio R&PSG C9.25-411
9.25″ Chrysler 4.10 Ratio R&P Premium Dry-Cut Double DrilledSGPC9.25-411DCD
9.25″ Chrysler 4.56 Ratio R&P (NOISY)SG C9.25-456
9.25″ Chrysler 4.56 Ratio R&P Double Drilled for ZFSG C9.25-456D
9.25″ Chrysler 4.88 Ratio R&PSG C9.25-488
9.25″ Front Chrysler Ring & PinionSierra Gear & Axle Part #
9.25″ Chrysler 3.42 Ratio R&P ReverseSG C9.25-342R
9.25″ Chrysler 3.73 Ratio R&P ReverseSG C9.25-373R
9.25″ Chrysler 4.30 Ratio R&P ReverseSG C9.25-430R
11.5″ AAM Ring & PinionSierra Gear & Axle Part #
11.5″ GM 3.42 Ratio R&PSG GM11.5-342
11.5″ GM 3.73 Ratio R&PSG GM11.5-373
11.5″ GM 4.11 Ratio R&PSG GM11.5-411
11.5″ GM 4.56 Ratio R&PSG GM11.5-456
11.5″ GM 4.88 Ratio R&PSG GM11.5-488
11.5″ GM 5.13 Ratio R&PSG GM11.5-513
11.5″ GM 5.38 Ratio R&PSG GM11.5-538
11.8″ AAM Ring & PinionSierra Gear & Axle Part #
11.8″ GM 3.42 Ratio R&PSG GM11.8-342
11.8″ GM 3.73 Ratio R&PSG GM11.8-373
11.8″ GM 4.11 Ratio R&PSG GM11.8-411
11.8″ GM 4.30 Ratio R&PSG GM11.8-430
11.8″ GM 4.56 Ratio R&PSG GM11.8-456
11.8″ GM 4.88 Ratio R&PSG GM11.8-488
11.8″ GM 5.13 Ratio R&PSG GM11.8-513
11.8″ GM 5.38 Ratio R&PSG GM11.8-538

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Gear Calculator

Doing a gear ratio change but not sure what you want? Try our Differential Gear Calculator.