Best 31-Spline 12-Bolt Differential Gears

Looking for the best 31-spline 12-bolt differential gears to upgrade your vehicle’s performance? We’ve curated a list of top-rated options from trusted brands like Motive Gear, Spicer, and EXCEL, ensuring durability and smooth power delivery for your towing, hauling, or off-roading needs.

Upgrading your vehicle’s differential gears can transform its performance. Whether you’re towing, hauling, or off-roading, the right gears make all the difference. We’ve gathered the best 31-spline 12-bolt differential gears to help you find the perfect fit.

These gears are built tough and designed for smooth power delivery. From Ford to Dodge, we’ve got options for every need. Get ready to boost your vehicle’s capability with confidence.

Discover top brands like Motive Gear, Spicer, and EXCEL. Each product is tested for durability and performance. Let’s dive in and find the ideal upgrade for your ride!

List of Top 10 31-Spline 12-Bolt Differential Gears

Image Title Best For Price
Motive Gear F10.25-4.10L Differential Ring & Pinion, For Ford 10.25 Motive Gear F10.25-4.10L Differential Ring & Pinion, For Ford 10.25″, Gear Ratio 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth Fits Ford F-Series, Econoline, Lobo & Chassis, Rep. YG F10.25-411L

This Motive Gear Differential Ring & Pinion is perfect for Ford owners who need reliable, heavy-duty performance. It’s ideal for towing, hauling, or work trucks, offering strength and durability for tough jobs.

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Spicer SVL 2020861 Differential Ring and Pinion Gear Set for Ford 9.75 Spicer SVL 2020861 Differential Ring and Pinion Gear Set for Ford 9.75″, 3.55 Ratio

This Spicer SVL 2020861 Differential Ring and Pinion Gear Set is perfect for Ford owners who need a reliable replacement for their 9.75-inch axle with a 3.55 ratio. It’s easy to install and built to last, making it ideal for daily drivers or light-duty trucks.

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Motive Gear F10.5-373PK Ring & Pinion Set, 31 Spline for Ford 10.5 Motive Gear F10.5-373PK Ring & Pinion Set, 31 Spline for Ford 10.5″ -Fit for 12-Bolt Ford 10.5 Differential –3.73 Ratio, Compatible for 1999-2007 Ford F-250, F-350, Excursion –Replaces YG F10.5-373-31

This Motive Gear Ring & Pinion Set is perfect for Ford owners who want to boost their truck’s performance. It’s ideal for towing and highway driving, giving you better torque and fuel efficiency.

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National Drivetrain 3.73 Ring and Pinion Gear Set & Motive Gear Master Bearing Kit for Ford 10.25 National Drivetrain 3.73 Ring and Pinion Gear Set & Motive Gear Master Bearing Kit for Ford 10.25″ Differential | 1985-1998 F-250 F-350 E-Series | 8620 Steel | 12-Bolt | 31 Spline | R10.25RMK

This National Drivetrain 3.73 Ring and Pinion Gear Set is perfect for Ford truck owners who need a reliable upgrade. It’s ideal for 1985-1998 F-250, F-350, and E-Series models with a 10.25″ differential. The master bearing kit ensures smooth performance and long-lasting durability.

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A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker Compatible with Dodge Ram 1500, Charger Van 2500, Charger, Durango, Challenger, Dakota, B100, B150, B200, B250, D300, D350 & Chrysler Imperial A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker Compatible with Dodge Ram 1500, Charger Van 2500, Charger, Durango, Challenger, Dakota, B100, B150, B200, B250, D300, D350 & Chrysler Imperial

This A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker is perfect for Dodge and Chrysler owners who need a reliable and durable upgrade for their vehicle’s rear axle. It’s ideal for those looking to improve performance and ensure smooth torque transmission in their classic or modern trucks and vans.

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Spicer SVL 2020864 Differential Ring and Pinion Gear Set for Ford 9.75 Spicer SVL 2020864 Differential Ring and Pinion Gear Set for Ford 9.75″, 3.73 Ratio

This Spicer SVL 2020864 Differential Ring and Pinion Gear Set is perfect for Ford owners needing a reliable upgrade. It fits Ford 9.75″ applications with a 3.73 ratio, making it ideal for improved performance.

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USA Standard Gear (ZG GM12T-308) Ring & Pinion Gear Set for GM 12-Bolt Truck Differential USA Standard Gear (ZG GM12T-308) Ring & Pinion Gear Set for GM 12-Bolt Truck Differential

This USA Standard Gear Ring & Pinion Set is perfect for truck owners who need a reliable upgrade for their GM 12-bolt differential. It’s ideal for those seeking a 3.08 axle ratio and confidence in their install.

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EXCEL F10355, Differential Ring & Pinion, For Ford 10.25 (12-Bolt), Gear Ratio 3.55, 31 Spline, 11 Pinion & 39 Ring Tooth Fits 1985-92 Ford F-250, F-350, F-Super Duty, Replaces Motive Gear F10.25-355 EXCEL F10355, Differential Ring & Pinion, For Ford 10.25 (12-Bolt), Gear Ratio 3.55, 31 Spline, 11 Pinion & 39 Ring Tooth Fits 1985-92 Ford F-250, F-350, F-Super Duty, Replaces Motive Gear F10.25-355

This differential ring & pinion set is perfect for Ford truck owners who need a reliable replacement for their 1985-1992 F-250, F-350, or F-Super Duty. It’s easy to install and built to last, making it ideal for daily drivers and off-road enthusiasts.

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EXCEL F10410, Differential Ring & Pinion, For Ford 10.25, Gear Ratio: 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth Fits Ford F-250/F-350/F-Super Duty (1985-1992), Repl. Motive Gear F10.25-410 EXCEL F10410, Differential Ring & Pinion, For Ford 10.25, Gear Ratio: 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth Fits Ford F-250/F-350/F-Super Duty (1985-1992), Repl. Motive Gear F10.25-410

This EXCEL F10410 Differential Ring & Pinion is perfect for Ford truck owners who need reliable, heavy-duty performance. It’s ideal for towing and tough jobs, fitting 1985-1992 Ford F-250, F-350, and F-Super Duty models.

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EXCEL F10410L, Differential Ring & Pinion, For Ford 10.25 EXCEL F10410L, Differential Ring & Pinion, For Ford 10.25″, Gear Ratio: 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth – Fits Ford F-250, F-350 & F-Super Replace USA Standard ZG F10.25-411L.

This EXCEL F10410L Differential Ring & Pinion is perfect for Ford truck owners who need reliable performance. It’s ideal for 1993-1998 F-250, F-350, and F-Super Duty models, offering strong towing power and smooth highway driving.

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Detailed Reviews

Discover the top 10 31-Spline 12-Bolt Differential Gears in our expert-curated guide. Each product is thoroughly reviewed for performance, durability, and value. Whether you need tough upgrades or smooth rides, this guide has you covered. Find the perfect fit for your vehicle and upgrade with confidence today!

1. Motive Gear F10.25-4.10L Differential Ring & Pinion, For Ford 10.25″, Gear Ratio 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth Fits Ford F-Series, Econoline, Lobo & Chassis, Rep. YG F10.25-411L

Motive Gear F10.25-4.10L Differential Ring & Pinion, For Ford 10.25

The Motive Gear F10.25-4.10L Differential Ring & Pinion is built tough for Ford trucks. Made from 8620 heat-treated steel, it handles heavy towing and hauling with ease.

It fits perfectly in Ford 10.25″ axles and works with F-Series, Econoline, and more. Enhances low-end power and comes with a 1-year warranty.

Pros Cons
  • Heavy-duty 8620 steel ensures strength and longevity.
  • Exact OE fit for Ford 10.25″ axles, no hassle.
  • 4.10 gear ratio boosts towing and low-end power.
  • 1-year warranty guarantees peace of mind.
  • Not for high-speed driving, better for towing and hauling.
  • Requires professional installation, not a DIY job.
  • Limited warranty covers only 1 year or 50,000 miles.

Perfect For:

This Motive Gear Differential Ring & Pinion is perfect for Ford owners who need reliable, heavy-duty performance. It’s ideal for towing, hauling, or work trucks, offering strength and durability for tough jobs.

Ready to Purchase?

2. Spicer SVL 2020861 Differential Ring and Pinion Gear Set for Ford 9.75″, 3.55 Ratio

Spicer SVL 2020861 Differential Ring and Pinion Gear Set for Ford 9.75

Unleash the power of your Ford with the Spicer SVL 2020861 Differential Ring and Pinion Gear Set. This premium upgrade is designed for Ford 9.75″ applications, promising a noticeable performance boost. Get ready for a smoother, more efficient drive.

Experience the perfect balance with a 3.55 ratio. This set ensures optimal torque and speed for your vehicle.

Upgrade your Ford’s drivetrain today. Experience Spicer’s legendary durability. Enjoy enhanced off-road capability.

Pros Cons
  • Perfect fit for Ford 9.75″ axle applications.
  • 3.55 ratio boosts performance and efficiency.
  • Durable 31-spline design ensures long-lasting reliability.
  • Precise 39-11 tooth pattern delivers smooth power transfer.
  • Limited vehicle compatibility – only fits Ford 9.75″ axles.
  • No installation tools included – extra cost required.
  • Specific ratio (3.55) may not suit all driving needs.

Perfect For:

This Spicer SVL 2020861 Differential Ring and Pinion Gear Set is perfect for Ford owners who need a reliable replacement for their 9.75-inch axle with a 3.55 ratio. It’s easy to install and built to last, making it ideal for daily drivers or light-duty trucks.

Ready to Purchase?

3. Motive Gear F10.5-373PK Ring & Pinion Set, 31 Spline for Ford 10.5″ -Fit for 12-Bolt Ford 10.5 Differential –3.73 Ratio, Compatible for 1999-2007 Ford F-250, F-350, Excursion –Replaces YG F10.5-373-31

Motive Gear F10.5-373PK Ring & Pinion Set, 31 Spline for Ford 10.5

The Motive Gear F10.5-373PK Ring & Pinion Set is a high-performance gear set designed for Ford 10.5″ differentials. It offers a 3.73 ratio, perfect for improved towing and highway performance.

Made from durable 8620 steel, this set ensures superior strength and long-lasting durability. Its precision-cut 31-spline pinion guarantees smooth power transfer and accurate fitment.

Compatible with 1999-2007 Ford F-250, F-350, and Excursion, it’s a direct OEM replacement. Easy installation and factory performance make it a reliable choice.

Pros Cons
  • Boosts towing and highway performance with optimal torque.
  • Built tough with premium 8620 steel for long life.
  • Fits perfectly in Ford trucks and Excursion models.
  • Easy install as a direct OEM replacement.
  • Not for all Fords – Check your model before buying.
  • Heavy-duty only – Overkill for light-duty or daily driving.
  • Pro install needed – DIYers may struggle with setup.

Perfect For:

This Motive Gear Ring & Pinion Set is perfect for Ford owners who want to boost their truck’s performance. It’s ideal for towing and highway driving, giving you better torque and fuel efficiency.

Ready to Purchase?

4. National Drivetrain 3.73 Ring and Pinion Gear Set & Motive Gear Master Bearing Kit for Ford 10.25″ Differential | 1985-1998 F-250 F-350 E-Series | 8620 Steel | 12-Bolt | 31 Spline | R10.25RMK

National Drivetrain 3.73 Ring and Pinion Gear Set & Motive Gear Master Bearing Kit for Ford 10.25

Upgrade your Ford truck’s drivetrain with this premium gear set and bearing kit. It offers a 3.73 gear ratio for optimal performance. Built with tough 8620 steel, it’s designed for durability.

This kit is perfect for 1985-1998 Ford F-250, F-350, and E-Series models. It includes all the essential bearings and seals for a complete rear axle overhaul.

Pros Cons
  • Upgrade your Ford’s performance with 3.73 gear ratio.
  • Durable 8620 steel ensures long-lasting reliability.
  • Perfect fit for 1985-1998 F-250/F-350, E-Series.
  • Complete kit includes premium bearings and seals.
  • Not for all Fords, check your model before buying.
  • Installation requires skill, not beginner-friendly.
  • Heavy package, expect higher shipping costs.

Perfect For:

This National Drivetrain 3.73 Ring and Pinion Gear Set is perfect for Ford truck owners who need a reliable upgrade. It’s ideal for 1985-1998 F-250, F-350, and E-Series models with a 10.25″ differential. The master bearing kit ensures smooth performance and long-lasting durability.

Ready to Purchase?

5. A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker Compatible with Dodge Ram 1500, Charger Van 2500, Charger, Durango, Challenger, Dakota, B100, B150, B200, B250, D300, D350 & Chrysler Imperial

A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker Compatible with Dodge Ram 1500, Charger Van 2500, Charger, Durango, Challenger, Dakota, B100, B150, B200, B250, D300, D350 & Chrysler Imperial

The A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker is a reliable upgrade for your vehicle. It works with many Dodge and Chrysler models, ensuring a perfect fit. This part boosts performance and durability.

It’s made from strong aluminum, resists rust, and seals well. The Eaton-style clutch ensures smooth torque transmission.

This locker fits all gear ratios and has a nodular iron case. It’s built to last and keeps your vehicle running efficiently.

Pros Cons
  • Fits many Dodge & Chrysler models, ensuring wide compatibility.
  • Rust-resistant aluminum material for long-lasting durability.
  • Efficient torque transmission for smooth, reliable performance.
  • Easy installation with no carrier bearing needed.
  • No carrier bearing included, so you’ll need to buy it separately.
  • Limited to rear axle use only, not for front-wheel drive setups.
  • Specific fitment required, check compatibility carefully before purchase.

Perfect For:

This A-Premium Rear 31 Spline 12-Bolt Limited-Slip Locker is perfect for Dodge and Chrysler owners who need a reliable and durable upgrade for their vehicle’s rear axle. It’s ideal for those looking to improve performance and ensure smooth torque transmission in their classic or modern trucks and vans.

Ready to Purchase?

6. Spicer SVL 2020864 Differential Ring and Pinion Gear Set for Ford 9.75″, 3.73 Ratio

Spicer SVL 2020864 Differential Ring and Pinion Gear Set for Ford 9.75

Upgrade your Ford’s performance with the Spicer SVL 2020864 Differential Ring and Pinion Gear Set. This high-quality set is engineered for Ford 9.75″ applications, delivering a perfectly balanced 3.73 ratio.

Experience smoother rides. Enjoy enhanced power. Get back on the road with confidence.

Pros Cons
  • Perfect fit for Ford 9.75″ applications, ensuring smooth performance.
  • 3.73 ratio boosts acceleration and power efficiently.
  • 41-11 tooth pattern delivers reliable and durable operation.
  • 31-spline 12-bolt design ensures strength and stability.
  • Limited vehicle compatibility – only fits Ford 9.75″ applications.
  • No installation tools included – extra cost required.
  • Specific ratio (3.73) may not suit all driving needs.

Perfect For:

This Spicer SVL 2020864 Differential Ring and Pinion Gear Set is perfect for Ford owners needing a reliable upgrade. It fits Ford 9.75″ applications with a 3.73 ratio, making it ideal for improved performance.

Ready to Purchase?

7. USA Standard Gear (ZG GM12T-308) Ring & Pinion Gear Set for GM 12-Bolt Truck Differential

USA Standard Gear (ZG GM12T-308) Ring & Pinion Gear Set for GM 12-Bolt Truck Differential

Upgrade your GM 12-Bolt Truck Differential with the USA Standard Gear (ZG GM12T-308) Ring & Pinion Gear Set. This high-quality set ensures confidence in your installation. It’s the perfect choice for your truck.

Get reliable performance with a standard one-year warranty. This gear set features a 3.08 axle ratio for your needs.

Pros Cons
  • Boosts confidence with reliable USA Standard Gear performance.
  • Fits GM 12-Bolt truck differentials perfectly.
  • One-year warranty ensures peace of mind.
  • 3.08 axle ratio for smooth, efficient driving.
  • Limited to 3.08 axle ratio, not versatile for all vehicles.
  • One-year warranty may not cover long-term wear and tear.
  • No mention of installation tools or guides included.

Perfect For:

This USA Standard Gear Ring & Pinion Set is perfect for truck owners who need a reliable upgrade for their GM 12-bolt differential. It’s ideal for those seeking a 3.08 axle ratio and confidence in their install.

Ready to Purchase?

8. EXCEL F10355, Differential Ring & Pinion, For Ford 10.25 (12-Bolt), Gear Ratio 3.55, 31 Spline, 11 Pinion & 39 Ring Tooth Fits 1985-92 Ford F-250, F-350, F-Super Duty, Replaces Motive Gear F10.25-355

EXCEL F10355, Differential Ring & Pinion, For Ford 10.25 (12-Bolt), Gear Ratio 3.55, 31 Spline, 11 Pinion & 39 Ring Tooth Fits 1985-92 Ford F-250, F-350, F-Super Duty, Replaces Motive Gear F10.25-355

Upgrade your Ford truck’s performance with the EXCEL F10355 Differential Ring & Pinion set! This premium gear set is built for tough jobs and lasting durability.

It’s a direct fit for your 1985-1992 Ford F-250, F-350, or F-Super Duty. Enjoy peace of mind with a 1-year/50,000-mile warranty. Get superior performance today!

Pros Cons
  • Fits Ford Trucks perfectly, ensuring a direct and easy installation.
  • Durable 8620 Steel guarantees long-lasting performance and reliability.
  • Optimized Gear Set delivers smooth power and efficiency for your ride.
  • 1-Year Warranty provides peace of mind with every purchase.
  • Not for all Fords – Check your truck’s model year before buying.
  • No installation tools – You’ll need extra gear to set it up.
  • Warranty limits – Only covers 1 year or 50,000 miles.

Perfect For:

This differential ring & pinion set is perfect for Ford truck owners who need a reliable replacement for their 1985-1992 F-250, F-350, or F-Super Duty. It’s easy to install and built to last, making it ideal for daily drivers and off-road enthusiasts.

Ready to Purchase?

9. EXCEL F10410, Differential Ring & Pinion, For Ford 10.25, Gear Ratio: 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth Fits Ford F-250/F-350/F-Super Duty (1985-1992), Repl. Motive Gear F10.25-410

EXCEL F10410, Differential Ring & Pinion, For Ford 10.25, Gear Ratio: 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth Fits Ford F-250/F-350/F-Super Duty (1985-1992), Repl. Motive Gear F10.25-410

Conquer tough jobs with the EXCEL F10410 Differential Ring & Pinion. This precision-engineered set is built for Ford 10.25 differentials, specifically for F-250, F-350, and F-Super Duty models from 1985-1992. Get ready for unmatched performance!

It boasts a 4.10 gear ratio for excellent torque. The short pinion design is perfect for towing. Enjoy superior wear resistance with its 8620 steel construction.

This heavy-duty upgrade features a 12-bolt, 31-spline setup for ultimate toughness. Plus, it comes with a 1-year / 50,000-mile warranty for your peace of mind. Ready to upgrade your ride?

Pros Cons
  • Precision-engineered for Ford 10.25 differentials, perfect fit.
  • Durable 8620 steel ensures long-lasting performance.
  • 4.10 gear ratio boosts torque for heavy-duty tasks.
  • 1-year warranty guarantees reliability and peace of mind.
  • Not for all Fords – Only fits specific 1985-1992 models.
  • Heavy-duty focus – May not suit light-duty or daily driving needs.
  • Professional install needed – Requires expertise for proper setup.

Perfect For:

This EXCEL F10410 Differential Ring & Pinion is perfect for Ford truck owners who need reliable, heavy-duty performance. It’s ideal for towing and tough jobs, fitting 1985-1992 Ford F-250, F-350, and F-Super Duty models.

Ready to Purchase?

10. EXCEL F10410L, Differential Ring & Pinion, For Ford 10.25″, Gear Ratio: 4.10, 12-Bolt, 31 Spline, 10 Pinion & 41 Ring Tooth – Fits Ford F-250, F-350 & F-Super Replace USA Standard ZG F10.25-411L.

EXCEL F10410L, Differential Ring & Pinion, For Ford 10.25

Upgrade your Ford truck with the EXCEL F10410L Differential Ring & Pinion. This high-quality upgrade is built to last.

Get balanced performance with a 4.10 gear ratio. It’s made from tough 8620 steel. Enjoy smooth operation and long-lasting durability.

This is a direct-fit replacement for your Ford F-250, F-350, and F-Super Duty. It also comes with a 1-year / 50,000-mile warranty.

Pros Cons
  • Fits Ford trucks perfectly, ensuring a direct replacement.
  • 4.10 gear ratio boosts towing power and highway efficiency.
  • Durable steel build handles heavy loads with ease.
  • Smooth, quiet operation for a reliable drive.
  • Limited vehicle compatibility – Only fits specific Ford models.
  • Noisy operation possible – Despite precision cuts, some noise may occur.
  • Heavy duty use required – Not ideal for light or casual drivers.

Perfect For:

This EXCEL F10410L Differential Ring & Pinion is perfect for Ford truck owners who need reliable performance. It’s ideal for 1993-1998 F-250, F-350, and F-Super Duty models, offering strong towing power and smooth highway driving.

Ready to Purchase?

Buying Guide

Upgrading your differential gears can boost your vehicle’s performance. Choose the right one for towing, hauling, or off-roading.

Buying the Best 31-Spline 12-Bolt Differential Gears is easy with this guide. We’ll help you find the perfect fit for your needs.

Here are the key factors to consider:

  • Vehicle Compatibility:
    Make sure the gears fit your make and model. Check the year, axle size, and ratio for a perfect match.

  • Gear Ratio:
    Choose a ratio that suits your driving needs. Lower ratios boost torque for towing, while higher ratios improve speed.

  • Material Quality:
    Look for gears made from durable materials like 8620 steel. They last longer and handle tough conditions.

  • Brand Reputation:
    Stick with trusted brands like Motive Gear, Spicer, and EXCEL. They offer reliable performance and warranties.

  • Installation Ease:
    Opt for gears with simple installation. Some kits include bearings and seals for a complete upgrade.

  • Warranty Coverage:
    A good warranty gives peace of mind. Look for 1-year or mileage-based coverage.

  • Performance Needs:
    Decide if you need smooth power delivery, off-road capability, or heavy-duty strength.

  • Price and Value:
    Compare prices to find the best value. Balance cost with quality and features.

With these tips, you’ll find the perfect differential gears for your vehicle. Upgrade with confidence and enjoy better performance!