Motive Gear Performance Ring and Pinion Sets C887373L Chrysler 8.75 in. 489 case 3.73 Gears Gear, Pinion, 3.73:1 Ratio, Chrysler, in., Housing, Set
Motive Gear Performance Ring and Pinion Sets C887373L Chrysler 8.75 in. 489 case 3.73 Gears Gear, Pinion, 3.73:1 Ratio, Chrysler, in., Housing, Set
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Description
IMPORTANT NOTICE: Note for Pistons, Rings, Rotors, Rods and engine internalsUnless otherwise specified, some brands supply brake rotors, pistons, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.(keyword: ring)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Motive Gear StreetFX SKU mgrC887373L SFX Item ID 4798273 Accounting SKU mgr-C887373L Manufacturer SKU C887373L Manufacturer UPC 698231436400 Alternative References MGR-C887373L, MOTC887373L
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Ring and Pinion - Performance - 3.73 Ratio - 29 Spline Pinion - 489 Case - Mopar 8.75 in - Kit
Data: v2 - Desc: v4.2 - Upd: 2026-10-14 02:32:45
Part Type
Chrysler 8.75in. 3.73 Rat. 489 Housing
Specifications
Gear, Ring and Pinion, 3.73:1 Ratio, Chrysler, 8.75 in., 489 Housing, Set
Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicles. Their gear sets are made from first-run steel, they never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high-horsepower racing engines. Extensive engineering, computer-controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in their in-house lab.
Motive Gear Performance also offers a lightweight alternative to standard ring and pinion gear sets. Their AX Series ring and pinions are designed to increase horsepower and efficiency by removing rotating weight. Professional race teams have used custom-lightened drivetrain parts for years, resulting in faster times and more wins. The AX Series gears from Motive are lightened during the manufacturing process; this results in gear sets that have been engineered, not modified. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into AX Series performance gear sets. Motive Gear Performance: What the pros run!
| Product Attributes | |
|---|---|
| Brand | Motive Gear |
| Manufacturer's Part Number | C887373L |
| Part Type | Ring and Pinion Gears |
| Product Line | Motive Gear Performance Ring and Pinion Sets |
| UPC | 698231436400 |
| Differential Case Design Type | Chrysler 8.75 in., 489 case |
| Ring and Pinion Ratio | 3.73:1 |
| Ring Gear Bolts | 12 |
| Pinion Spline Count | 29 |
| Ring Gear Rotation | Standard |
| Ring Gear Teeth | 41 |
| Pinion Gear Teeth | 11 |
| Ring Gear Diameter (in.) | 8.750 in. |
| Pinion Shaft Diameter (in.) | 1.875 in. |
| Installation Kit Included | No |
| Cover Gasket Included | No |
| Pinion Shims Included | No |
| Carrier Shims Included | No |
| Crush Sleeve Included | No |
| Pinion Seal Included | No |
| Pinion Nut Included | No |
| Ring Gear Bolts Included | No |
| Head Bearing Included | No |
| Tail Bearing Included | No |
| Carrier Bearings Included | No |
| Axle Seals Included | No |
| Axle Bearings Included | No |
| Differential Cover Included | No |
| Differential Oil Included | No |
| Friction Modifier Included | No |
| Installation DVD Included | No |
| Quantity | Sold as a kit. |
| Notes | For use with 489 casting housings only. |
Reference Information
| Brand Name/s | Motive Gear |
|---|---|
| StreetFX SKU | mgrC887373L |
| SFX Item ID | 4798273 |
| Supplier Item Code | 4798273 |
| Manufacturer SKU | C887373L |
| Manufacturer UPC | 698231436400 |
| Alternative References | MOTC887373L |
Compatibility
No specific fitment data available for this part. For clarification, please contact us.
Detailed Compatibility
| Application Data | |
|---|---|
| Make | CHRYSLER |
| Model | 300 |
| Submodel | BASE |
| Beginning Year | 1970 |
| Ending Year | 1971 |
| Engine Type | V8 |
| Engine Size | 7.2L/440 |
| Engine Family | Mopar big block RB |
| Axle Location | Rear |
| Liter | 7.2 |
| CID | 440 |
| CC | 7211 |
| Engine VIN Code | T |
| Make | CHRYSLER |
| Model | 300 |
| Submodel | BASE |
| Beginning Year | 1970 |
| Ending Year | 1971 |
| Engine Type | V8 |
| Engine Size | 7.2L/440 |
| Engine Family | Mopar big block RB |
| Axle Location | Rear |
| Liter | 7.2 |
| CID | 440 |
| CC | 7211 |
| Engine VIN Code | U |
| Make | CHRYSLER |
| Model | IMPERIAL |
| Submodel | CROWN |
| Beginning Year | 1970 |
| Ending Year | 1970 |
| Engine Type | V8 |
| Engine Size | 7.2L/440 |
| Engine Family | Mopar big block RB |
| Axle Location | Rear |
| Liter | 7.2 |
| CID | 440 |
| CC | 7211 |
| Engine VIN Code | T |
This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.
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