Looking for the best 5-speed starter upgrades? We’ve got you covered with top picks that are easy to install, built to last, and perfectly compatible with your vehicle.
Upgrading your 5-speed starter can make a big difference in your vehicle’s performance. Whether you’re fixing an old part or boosting power, the right kit ensures smooth starts and long-lasting reliability.
We’ve tested and reviewed the best 5-speed starter upgrades for Dodge Cummins 5.9L engines. These kits are easy to install, built to last, and perfectly compatible with your truck.
Find the perfect fit for your needs. Save time, money, and effort with our top picks.
List of Top 10 5 Speed Starter Upgrades
| Image | Title | Best For | Price |
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NV4500 NV5600 Starter Spacer Kit with Bolts 5 Speed Compatible with Dodge RAM 2500 3500 5.9L Cummins 1994-2002 |
This NV4500 NV5600 Starter Spacer Kit is perfect for Dodge RAM 2500 & 3500 owners with a 5.9L Cummins Diesel engine from 1994 to 2002. It’s ideal for those upgrading to a 5-speed transmission or replacing a worn-out factory spacer. |
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Starter Spacer Kit with Bolts 5 Speed for Dodge Cummins 5.9L 1994~2002 NV4500 NV5600 |
This Starter Spacer Kit is perfect for owners and mechanics who work on 1994-2002 Dodge Ram 2500 & 3500 trucks with the 5.9L Cummins engine. It is ideal for those who want to use a 5 Speed Starter with an NV4500 transmission and NV5600 flywheel. If you need a durable, easy-to-install part that ensures your starter works right, this kit is for you. |
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Starter Spacer Kit with Bolts 5 Speed for Dodge Ram 2500 3500 Cummins 5.9L 1994-2002 |
This spacer kit is perfect for Dodge Ram 2500/3500 owners with the 1994–2002 5.9L Cummins diesel who want to upgrade to a 5-speed NV4500/NV5600 setup. It’s for DIYers who want a direct fit with the starter spacer and bolts and a reliable finish. |
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CASTNOO Starter Spacer Kit Bolts 5 Speed Suitable for Dodge Cummins 5.9L 1994-2002 |
This starter spacer kit is perfect for Dodge Cummins 5.9L owners from 1994-2002 who are upgrading to a 5-speed NV4500 gearbox or installing an NV5600 flywheel. It makes installation easy and ensures a smooth connection between the starter and ring gear. This kit is ideal for those wanting to upgrade to a 13″ clutch or use a dual disc setup. |
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Starter Spacer with Bolts Kit 5 Speed Fits for Dodge Cummins 5.9L 1994-2002 Starter Replacement Parts |
This Starter Spacer with Bolts Kit is perfect for Dodge Cummins 5.9L owners who want to upgrade their 5-speed starter. It’s ideal for 1994-2002 Ram 2500 & 3500 trucks with non-High Output engines. |
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Bevinsee Starter Spacer with Bolts Kit 5 Speed NV4500 5.9L Cummins Compatible with Dodge RAM 2500 3500 NV5600 1994-2002 Silver |
This Bevinsee Starter Spacer Kit is perfect for Dodge RAM 2500 or 3500 owners who want a reliable and stylish upgrade. It’s ideal for those with 5.9L Cummins engines and NV4500 or NV5600 transmissions looking for a durable, precision-fit solution. |
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POWTAXBJGD Rotating Electric N20 Reducer Electric Electronic Starter, DC 5V 40/60/28/150/300/110 RPM, Micro N20 Gear Electronic Starter, Slow Speed Metal Gearbox Hobby Upgrade (Size : A1.40RPM) |
This POWTAXBJGD Rotating Electric N20 Reducer is perfect for hobbyists and DIY lovers who want a reliable, slow-speed motor for their projects. It is great for anyone needing a small, strong motor that lasts long and works at different speeds. |
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IPUDIS Rotating Electric N20 Reducer Electric Electronic Starter, DC 5V 40/60/28/150/300/110 RPM, Micro N20 Gear Electronic Starter, Slow Speed Metal Gearbox Hobby Upgrade (Size : A3.28RPM) |
The IPUDIS Rotating Electric N20 Reducer is perfect for hobbyists and DIY enthusiasts who need a reliable, slow-speed motor for their projects. Its durable metal design and variety of speed options make it ideal for upgrades and small-scale creations. |
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GEBSKI Rotating Electric 1PC Micro N20 Gear Electronic Starter, Applicable Voltage 3-6V DC 5V 55rpm, Full Metal Reduction Gearbox, Slow Speed Hobby Upgrade |
This GEBSKI Rotating Electric Micro N20 Gear Electronic Starter is perfect for hobbyists and DIY enthusiasts who need a small, durable, and high-speed motor for their projects. Its full metal reduction gearbox ensures long-lasting performance, making it ideal for slow-speed upgrades and precise applications. |
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OQATNXUR Rotating Electric N20 Reducer Electric Electronic Starter, DC 5V 40/60/28/150/300/110 RPM, Micro N20 Gear Electronic Starter, Slow Speed Metal Gearbox Hobby Upgrade (Size : A2.60RPM) |
This OQATNXUR Rotating Electric N20 Reducer is perfect for hobbyists and DIY enthusiasts who need a reliable, low-noise motor with strong performance. It’s ideal for projects requiring slow, steady speeds and long-lasting durability. |
Detailed Reviews
Discover the top 10 5 Speed Starter Upgrades in this expert-curated guide. Each product is thoroughly reviewed for performance, durability, and value. Whether you need affordability or premium quality, this guide has you covered. Find the perfect upgrade to enhance your vehicle’s performance today!
1. NV4500 NV5600 Starter Spacer Kit with Bolts 5 Speed Compatible with Dodge RAM 2500 3500 5.9L Cummins 1994-2002

The NV4500 NV5600 Starter Spacer Kit is perfect for Dodge RAM 2500 & 3500 trucks with a 5.9L Cummins Diesel engine from 1994 to 2002. It fits only high-output engines, not non-high-output ones.
This kit replaces OEM parts like Cummins 3946085 and 3949583. It includes one starter spacer and three mounting bolts, making it a direct replacement for the factory plastic spacer on the NV5600.
Easy to use, saves money, and works great. 30-day refund and 12-month warranty included. No risk when buying!
| Pros | Cons |
|---|---|
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Perfect For:
This NV4500 NV5600 Starter Spacer Kit is perfect for Dodge RAM 2500 & 3500 owners with a 5.9L Cummins Diesel engine from 1994 to 2002. It’s ideal for those upgrading to a 5-speed transmission or replacing a worn-out factory spacer.
Ready to Purchase?
2. Starter Spacer Kit with Bolts 5 Speed for Dodge Cummins 5.9L 1994~2002 NV4500 NV5600

The Starter Spacer Kit is perfect for 1994–2002 Dodge Ram 2500 & 3500 trucks with 5.9L Cummins Diesel engines. It includes one spacer and three bolts, replacing Cummins parts 3946085 and 3949583. This kit ensures smooth starter engagement for 5-speed transmissions.
Made from high-quality aluminum, this kit is durable and rust-free. Its precise design makes installation easy and efficient, saving you time and effort.
Enjoy risk-free shopping with a 30-day refund policy and a 12-month warranty. Our professional service ensures you’re fully satisfied with your purchase.
| Pros | Cons |
|---|---|
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Perfect For:
This Starter Spacer Kit is perfect for owners and mechanics who work on 1994-2002 Dodge Ram 2500 & 3500 trucks with the 5.9L Cummins engine. It is ideal for those who want to use a 5 Speed Starter with an NV4500 transmission and NV5600 flywheel. If you need a durable, easy-to-install part that ensures your starter works right, this kit is for you.
Ready to Purchase?
3. Starter Spacer Kit with Bolts 5 Speed for Dodge Ram 2500 3500 Cummins 5.9L 1994-2002

Upgrade your Dodge Ram 2500 or 3500 with this Starter Spacer Kit. It fits trucks from 1994 to 2002 with the 5.9L Cummins Diesel engine. The kit is made just for your vehicle’s needs.
This kit lets you use a 5 Speed Starter and NV4500 Transmission with the NV5600 6 Speed Flywheel. It works with 13 upgrades and NV4500 Dual Discs. The spacer replaces parts Cummins 3946085 and 3949583.
Made from aircraft grade billet aluminum, it is strong and won’t rust. The kit includes one spacer and three heavy-duty bolts. Buy with confidence—there’s a 30-day return and a 12-month warranty.
| Pros | Cons |
|---|---|
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Perfect For:
This spacer kit is perfect for Dodge Ram 2500/3500 owners with the 1994–2002 5.9L Cummins diesel who want to upgrade to a 5-speed NV4500/NV5600 setup. It’s for DIYers who want a direct fit with the starter spacer and bolts and a reliable finish.
Ready to Purchase?
4. CASTNOO Starter Spacer Kit Bolts 5 Speed Suitable for Dodge Cummins 5.9L 1994-2002

Upgrade your Dodge Cummins 5.9L with the CASTNOO Starter Spacer Kit. This kit is designed for 5-speed transmissions from 1994 to 2002. It ensures a perfect fit and long-lasting performance.
Made from high-quality CNC billet aluminum, this kit is corrosion-resistant and durable. It allows you to use a 5-speed starter and NV4500 gearbox. The kit also works with NV5600 flywheels and dual disc clutches.
Installation is quick and easy. Just use the 3 bolts provided to install the gasket. This brings the ring gear into contact with the starter. If you have any issues, contact us for fast support.
| Pros | Cons |
|---|---|
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Perfect For:
This starter spacer kit is perfect for Dodge Cummins 5.9L owners from 1994-2002 who are upgrading to a 5-speed NV4500 gearbox or installing an NV5600 flywheel. It makes installation easy and ensures a smooth connection between the starter and ring gear. This kit is ideal for those wanting to upgrade to a 13″ clutch or use a dual disc setup.
Ready to Purchase?
5. Starter Spacer with Bolts Kit 5 Speed Fits for Dodge Cummins 5.9L 1994-2002 Starter Replacement Parts

Upgrade your Dodge Cummins starter with this Starter Spacer with Bolts Kit. It’s designed for 1994-2002 Ram 2500 & 3500 trucks with 5.9L Cummins Diesel engines.
Made of high-quality billet aluminum, this kit is rust-proof and durable. It works with 13″ upgrades and NV4500 Dual Discs. Easy to install with just three bolts.
Allows use of the 5-speed starter with an NV5600 flywheel. Perfect for NV4500 transmissions. Simple, reliable, and long-lasting.
| Pros | Cons |
|---|---|
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Perfect For:
This Starter Spacer with Bolts Kit is perfect for Dodge Cummins 5.9L owners who want to upgrade their 5-speed starter. It’s ideal for 1994-2002 Ram 2500 & 3500 trucks with non-High Output engines.
Ready to Purchase?
6. Bevinsee Starter Spacer with Bolts Kit 5 Speed NV4500 5.9L Cummins Compatible with Dodge RAM 2500 3500 NV5600 1994-2002 Silver

The Bevinsee Starter Spacer Kit is a high-quality upgrade for your vehicle. Made from premium billet aluminum, it’s lightweight yet sturdy. Perfect for Dodge RAM 2500 and 3500 models.
This kit is built to last with anodized aluminum for corrosion resistance. It handles bad weather with ease. The sleek design adds a stylish touch to your engine.
It ensures a precision fit for secure installation. Works with NV4500 and NV5600 transmissions. A direct replacement for factory spacers.
| Pros | Cons |
|---|---|
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Perfect For:
This Bevinsee Starter Spacer Kit is perfect for Dodge RAM 2500 or 3500 owners who want a reliable and stylish upgrade. It’s ideal for those with 5.9L Cummins engines and NV4500 or NV5600 transmissions looking for a durable, precision-fit solution.
Ready to Purchase?
7. POWTAXBJGD Rotating Electric N20 Reducer Electric Electronic Starter, DC 5V 40/60/28/150/300/110 RPM, Micro N20 Gear Electronic Starter, Slow Speed Metal Gearbox Hobby Upgrade (Size : A1.40RPM)

The POWTAXBJGD Rotating Electric N20 Reducer is a compact and powerful electronic starter. It works with DC 5V power and comes in six speed options: 40, 60, 28, 150, 300, and 110 RPM. Its metal gearbox ensures durability and long-lasting performance.
This starter is wear-resistant and high-speed, making it ideal for DIY projects and hobby upgrades. Its small size fits easily into various setups.
| Pros | Cons |
|---|---|
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Perfect For:
This POWTAXBJGD Rotating Electric N20 Reducer is perfect for hobbyists and DIY lovers who want a reliable, slow-speed motor for their projects. It is great for anyone needing a small, strong motor that lasts long and works at different speeds.
Ready to Purchase?
8. IPUDIS Rotating Electric N20 Reducer Electric Electronic Starter, DC 5V 40/60/28/150/300/110 RPM, Micro N20 Gear Electronic Starter, Slow Speed Metal Gearbox Hobby Upgrade (Size : A3.28RPM)

The IPUDIS Rotating Electric N20 Reducer is a powerful, compact motor. It offers variable speeds from 28 to 300 RPM. This versatile starter is perfect for DIY projects and hobby upgrades.
Its metal gearbox ensures durability and longevity. The small size and high speed make it ideal for tight spaces.
| Pros | Cons |
|---|---|
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Perfect For:
The IPUDIS Rotating Electric N20 Reducer is perfect for hobbyists and DIY enthusiasts who need a reliable, slow-speed motor for their projects. Its durable metal design and variety of speed options make it ideal for upgrades and small-scale creations.
Ready to Purchase?
9. GEBSKI Rotating Electric 1PC Micro N20 Gear Electronic Starter, Applicable Voltage 3-6V DC 5V 55rpm, Full Metal Reduction Gearbox, Slow Speed Hobby Upgrade

The GEBSKI Rotating Electric Micro N20 Gear Starter is a compact and powerful tool. It works with 3-6V DC power, making it versatile. Its full metal gearbox ensures durability and long life.
This starter has a slow speed of 55rpm at 5V, perfect for hobby upgrades. It comes in two models, with output shaft lengths of 10mm (Model A) and 8mm (Model B). Both are designed for smooth, reliable performance.
The metal build resists wear and avoids tooth breaking. Its small size (101215mm) makes it easy to use. This starter is ideal for projects needing precision and strength.
| Pros | Cons |
|---|---|
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Perfect For:
This GEBSKI Rotating Electric Micro N20 Gear Electronic Starter is perfect for hobbyists and DIY enthusiasts who need a small, durable, and high-speed motor for their projects. Its full metal reduction gearbox ensures long-lasting performance, making it ideal for slow-speed upgrades and precise applications.
Ready to Purchase?
10. OQATNXUR Rotating Electric N20 Reducer Electric Electronic Starter, DC 5V 40/60/28/150/300/110 RPM, Micro N20 Gear Electronic Starter, Slow Speed Metal Gearbox Hobby Upgrade (Size : A2.60RPM)

The OQATNXUR Rotating Electric N20 Reducer is a powerful and quiet motor. It offers slow speeds and strong torque. Perfect for DIY projects and hobby upgrades.
This starter is built to last with high-quality metal. It resists heat and wear, ensuring long-lasting performance. Its compact size makes it easy to use.
With multiple speed options, it fits various needs. The maintenance-free design saves time and effort. Ideal for creative and practical applications.
| Pros | Cons |
|---|---|
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Perfect For:
This OQATNXUR Rotating Electric N20 Reducer is perfect for hobbyists and DIY enthusiasts who need a reliable, low-noise motor with strong performance. It’s ideal for projects requiring slow, steady speeds and long-lasting durability.
Ready to Purchase?
Buying Guide
Upgrading your 5-speed starter is simple. It boosts your truck’s power and reliability. You’ll enjoy smoother starts every time.
Here’s what to look for when buying the best 5-speed starter upgrade:
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Compatibility: Make sure the starter spacer kit fits your truck model and engine. For example, kits designed for Dodge RAM 2500 & 3500 with 5.9L Cummins engines from 1994 to 2002 work best for those trucks. Check if it fits high-output engines if that applies to you.
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Material Quality: Choose kits made from durable materials like billet aluminum or CNC billet aluminum. These resist rust and corrosion, ensuring long-lasting performance.
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Ease of Installation: Look for kits that come with all necessary bolts and parts. A precise design means you can install it quickly without extra modifications.
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Starter and Transmission Compatibility: Confirm the kit supports your starter type and transmission. Some kits work with NV4500 and NV5600 transmissions and flywheels, including dual disc clutches.
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Durability and Warranty: Pick products with warranties (like 12 months) and refund policies (such as 30 days). This protects your investment and gives peace of mind.
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Performance Benefits: A good spacer kit improves starter engagement and reduces wear. It helps your engine start smoothly and reliably every time.
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Customer Support: Choose brands that offer fast and helpful customer service in case you need assistance during installation or use.
By focusing on these factors, you’ll find a 5-speed starter upgrade that fits perfectly, lasts long, and makes your Dodge Cummins run better than ever.