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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

CHRYSLER AXLES – Ring and Pinion Gear Sets

7.25″ Chrysler Ring & Pinion Sierra Gear & Axle Part #
7.25″ Chrysler 3.55 Ratio R&P SG C7.25-355
7.25″ Chrysler 3.90 Ratio R&P SG C7.25-390
7.25″ Chrysler 4.10 Ratio R&P SG C7.25-411
8″ Chrysler IFS Ring & Pinion Sierra Gear & Axle Part #
8″ Chrysler IFS 3.91 Ratio R&P SG C8-391
8″ Chrysler IFS 4.10 Ratio R&P SG C8-411
8″ Chrysler IFS 4.56 Ratio R&P SG C8-456
8.25″ Chrysler Ring & Pinion Sierra Gear & Axle Part #
8.25″ Chrysler 3.08 Ratio R&P Double Drilled for Early/Late SG C8.25-308D
8.25″ Chrysler 3.21 Ratio R&P SG C8.25-321
8.25″ Chrysler 3.55 Ratio R&P SG C8.25-355
8.25″ Chrysler 3.73 Ratio R&P SG C8.25-373
8.25″ Chrysler 3.90 SG C8.25-390
8.25″ Chrysler 3.90 Ratio R&P SG C8.25-390
8.25″ Chrysler 3.90 Ratio R&P Double Drilled for Early/Late SG C8.25-390D
8.25″ Chrysler 4.11 Ratio R&P SG C8.25-411
8.25″ Chrysler 4.88 SG C8.25-488
8.25″ Chrysler 5.13 Ratio R&P Double Drilled for Early/Late SG C8.25-5.13
8.75″ Chrysler Ring & Pinion Sierra Gear & Axle Part #
8.75″ Chrysler 3.55 Ratio R&P 741 Case – Fine Thread SG C8.75-355-41 FINE
8.75″ Chrysler 3.73 Ratio R&P 741 Case – Fine Thread SG C8.75-373-41 FINE
8.75″ Chrysler 3.23 Ratio R&P 742 Case – Coarse Thread SG C8.75-323-42 COARSE
8.75″ Chrysler 3.55 Ratio R&P 742 Case – Coarse Thread SG C8.75-355-42 COARSE
8.75″ Chrysler 3.73 Ratio R&P 742 Case – Coarse Thread SG C8.75-373-42 COARSE
8.75″ Chrysler 3.91 Ratio R&P 742 Case – Coarse Thread SG C8.75-390-42 COARSE
8.75″ Chrysler 4.10 Ratio R&P 742 Case – Coarse Thread SG C8.75-411-42 COARSE
8.75″ Chrysler 4.56 Ratio R&P 742 Case – Coarse Thread SG C8.75-456-42 COARSE
8.75″ Chrysler 3.55 Ratio R&P 489 Case – Fine Thread SG C8.75-355-89 FINE
8.75″ Chrysler 3.73 Ratio R&P 489 Case – Fine Thread SG C8.75-373-89 FINE
8.75″ Chrysler 3.90 Ratio R&P 489 Case – Fine Thread SG C8.75-390-89 FINE
8.75″ Chrysler 4.10 Ratio R&P 489 Case – Fine Thread SG C8.75-411-89 FINE
8.75″ Chrysler 4.56 Ratio R&P 489 Case – Fine Thread SG C8.75-456-89 FINE
9.25″ Rear Chrysler Ring & Pinion Sierra Gear & Axle Part #
9.25″ Chrysler 3.21 Ratio R&P SG C9.25-321
9.25″ Chrysler 3.55 Ratio R&P SG C9.25-355
9.25″ Chrysler 3.55 Ratio R&P Premium 2-Cut SGPC9.25-355
9.25″ Chrysler 3.55 Ratio R&P Premium Dry-Cut Double Drilled including ’14 & Up SGPC9.25-355DCD
9.25″ Chrysler 3.90 Ratio R&P 47 x 12 SG C9.25-390
9.25″ Chrysler 3.90 Ratio R&P Premium 2-Cut SGPC9.25-390
9.25″ Chrysler 3.90 Ratio R&P Double Drilled 2011 & Up SG C9.25-390B
9.25″ Chrysler 3.90 Ratio R&P Premium Dry-Cut Double Drilled 2011 & Up SGPC9.25-390DCD
9.25″ Chrysler 4.10 Ratio R&P SG C9.25-411
9.25″ Chrysler 4.10 Ratio R&P Premium Dry-Cut Double Drilled SGPC9.25-411DCD
9.25″ Chrysler 4.56 Ratio R&P (NOISY) SG C9.25-456
9.25″ Chrysler 4.56 Ratio R&P Double Drilled for ZF SG C9.25-456D
9.25″ Chrysler 4.88 Ratio R&P SG C9.25-488
9.25″ Front Chrysler Ring & Pinion Sierra Gear & Axle Part #
9.25″ Chrysler 3.42 Ratio R&P Reverse SG C9.25-342R
9.25″ Chrysler 3.73 Ratio R&P Reverse SG C9.25-373R
9.25″ Chrysler 4.30 Ratio R&P Reverse SG C9.25-430R
11.5″ AAM Ring & Pinion Sierra Gear & Axle Part #
11.5″ GM 3.42 Ratio R&P SG GM11.5-342
11.5″ GM 3.73 Ratio R&P SG GM11.5-373
11.5″ GM 4.11 Ratio R&P SG GM11.5-411
11.5″ GM 4.56 Ratio R&P SG GM11.5-456
11.5″ GM 4.88 Ratio R&P SG GM11.5-488
11.5″ GM 5.13 Ratio R&P SG GM11.5-513
11.5″ GM 5.38 Ratio R&P SG GM11.5-538
11.8″ AAM Ring & Pinion Sierra Gear & Axle Part #
11.8″ GM 3.42 Ratio R&P SG GM11.8-342
11.8″ GM 3.73 Ratio R&P SG GM11.8-373
11.8″ GM 4.11 Ratio R&P SG GM11.8-411
11.8″ GM 4.30 Ratio R&P SG GM11.8-430
11.8″ GM 4.56 Ratio R&P SG GM11.8-456
11.8″ GM 4.88 Ratio R&P SG GM11.8-488
11.8″ GM 5.13 Ratio R&P SG GM11.8-513
11.8″ GM 5.38 Ratio R&P SG 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.