Best Engine Crankshaft Pulleys of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 9, 2026

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Engine crankshaft pulleys are essential components in any vehicle’s engine system. These pulleys are responsible for transferring power from the engine to various other systems in the vehicle, such as the alternator, air conditioning compressor, and power steering pump. They are typically made from high-quality materials such as steel or aluminum, and come in a variety of sizes and designs to fit different types of engines. Engine crankshaft pulleys are designed to withstand high levels of stress and strain, making them durable and long-lasting. They are an important part of any vehicle’s engine and should be inspected regularly to ensure they are functioning properly.

At a Glance: Our Top Picks

3mirrors Stainless Steel Crank Shaft Sleeve Adapter 3/4" to 1" Cover #TOP 1
3mirrors Stainless Steel Crank Shaft Sleeve Adapter 3/4" to 1"
ftb score rating icon 9.9
Subaru Crankshaft Pulley Bolt 12369AA011 Cover #TOP 2
Subaru Crankshaft Pulley Bolt 12369AA011
ftb score rating icon 9.8
DOVOSO Crank Pulley Keyway Spacer for Honda and Acura, 4 Pack Cover #TOP 3
DOVOSO Crank Pulley Keyway Spacer for Honda and Acura, 4 Pack
ftb score rating icon 9.6

Top 10 Engine Crankshaft Pulleys

#TOP 1

3mirrors Stainless Steel Crank Shaft Sleeve Adapter 3/4" to 1"

3mirrors Stainless Steel Crank Shaft Sleeve Adapter 3/4" to 1" Cover
3mirrors Crank Shaft Adapter Stainless Steel Crank Shaft Sleeve Adapter 3/4" to 1" Inch w/Step Key for Gas Engine Pulley Crank Shaft Predator Pulley

The 3mirrors Crank Shaft Adapter is designed to help you easily fit pulleys or gearboxes by enlarging your gas engine’s crankshaft diameter from 3/4" to 1". Its precise dimensions ensure a snug fit, making installation straightforward and reducing the need to buy new motors or pulleys, which saves you money. Made from durable stainless steel, this adapter resists rust and protects your crankshaft better than typical iron parts, giving you long-lasting performance. Plus, it’s perfect for adjusting motor and pulley sizes, allowing you to reuse old parts with new engines or change speeds and belts effortlessly.

What We Like
Precision fit dimensions
Durable stainless steel
Rust-resistant material
Adapts different shaft sizes
Cost-saving installation
#TOP 2

Subaru Crankshaft Pulley Bolt 12369AA011

12369AA011
Standard
Subaru Crankshaft Pulley Bolt 12369AA011 Cover
Subar Genuine Crankshaft Pulley Bolt - 12369AA011

The Subaru Crankshaft Bolt is an essential part designed specifically for your engine’s crankshaft pulley. This genuine Subaru component ensures a perfect fit and reliable performance, giving you peace of mind when replacing or repairing your vehicle. The bolt, identified by model number 12369AA011, is crafted to meet Subaru’s quality standards, helping maintain the integrity of your engine assembly. By using this genuine part, you can avoid compatibility issues and enjoy the convenience of a durable, long-lasting solution for your engine maintenance needs.

What We Like
Genuine Subaru quality
Precise fit
Durable construction
Engine-specific design
#TOP 3

DOVOSO Crank Pulley Keyway Spacer for Honda and Acura, 4 Pack

For 13810P2K003 For 90704-634-000
DOVOSO Crank Pulley Keyway Spacer for Honda and Acura, 4 Pack Cover
Crank Pulley Key Keyway Spacer Compatible with for Honda Civic Accord CRX CR-V Compatible with for Acura Integra Crankshaft Crank Key, 4 Pack

The DOVOSO Crank Pulley Keyway is designed to fit a wide range of Honda models, including Civic, Accord, Prelude, CRX, Civic Del Sol, and CR-V, covering many engine sizes and years. This means you can easily find the right fit for your vehicle without hassle. It also supports Acura Integra models, giving you flexibility if you own one of these cars. The product is made for direct replacement, so installation is straightforward and saves you time. Plus, it comes in a convenient pack of four, ensuring you have spares or can service multiple vehicles as needed.

What We Like
Wide vehicle compatibility
Supports multiple engine sizes
Direct replacement fit
Includes four pieces per pack
#TOP 4

AULINK 594-115 Harmonic Balancer Pulley

AUCPD397
AULINK 594-115 Harmonic Balancer Pulley Cover
AULINK 594-115 Harmonic Balancer Crankshaft Pulley Compatible with Chevy/Chevrolet Corvette 1997-2004/2008,For Cadillac CTS 2004-2005,For Pontiac G8 2009 5.7L 6.0L 6.2L V8,Replaces 12553474 12635649

The AULINK Harmonic Balancer is designed to fit several popular V8 engines, including Chevy Corvette, Cadillac CTS, and Pontiac G8 models, giving you confidence that it will match your vehicle. Made in certified facilities, this part undergoes strict quality checks to ensure reliable performance, so you get a product you can trust. It features a rubber vibration damper bonded between steel parts, which helps to reduce engine vibrations and makes your ride smoother and quieter. Plus, with a one-year or 50,000 km warranty, you have peace of mind knowing that support is available if any issues arise.

What We Like
Wide vehicle compatibility
Certified quality control
Vibration reduction design
Durable steel and rubber build
One-year warranty coverage
#TOP 5

Moker 2 Groove Crankshaft Pulley for Ford Small Block V8

M-2V-LS
Moker 2 Groove Crankshaft Pulley for Ford Small Block V8 Cover
2 Groove Crankshaft Pulley for Ford Small Block 1969-Up 289 302 351w 351C 351W 351M 400 V8 5.0L

The Moker 2 Groove Pulley is designed to fit Ford small block engines from 1969 and later, including popular models like the 302 and 351 series. It features two grooves to accommodate two V-belts, making it easy for you to run multiple accessories smoothly. With a diameter of 5.4 inches and a length of 2.2 inches, it fits perfectly on 4-bolt crank pulleys. Made from premium billet aluminum, this pulley is lightweight yet durable, helping reduce engine weight while maintaining performance. Its 88% underdrive ratio keeps your power steering and alternator working efficiently, offering you reliable and balanced engine function.

What We Like
Wide engine compatibility
Dual V-belt grooves
Lightweight billet aluminum
88% underdrive ratio
Fits stock accessories
#TOP 6

Dsxulxn Engine Crankshaft Pulley Bolt F5RZ6A340B

F5RZ6A340B
Dsxulxn Engine Crankshaft Pulley Bolt F5RZ6A340B Cover
Engine Crankshaft Pulley Bolt Compatible with Ford Lincoln Mercury Replace# F5RZ6A340B, F5RZ-6A340-B

The Dsxulxn Crankshaft Bolt is designed to fit various engines, including 4.6L V8, 5.4L V8, and 3.5L/3.7L V6 models, making it a versatile choice for many vehicles. Made from high-quality 10.9-grade alloy steel, this bolt offers strong durability and can handle tough engine conditions, giving you confidence in its performance. It’s crafted to perfectly match harmonic balancers and crankshaft pulleys, ensuring an easy and secure fit during installation. Plus, its black anti-corrosion coating protects the bolt from rust and wear, helping it last longer and maintain its reliability over time.

What We Like
Wide engine compatibility
High-strength alloy steel
Precise fit for pulleys
Corrosion-resistant finish
#TOP 7

MOXRUQ Stainless Steel Shaft Adapter Pulley

MOXTT2830SI-1PCS
Silver
1 PC
MOXRUQ Stainless Steel Shaft Adapter Pulley Cover
MOXRUQ 3/4" to 1" Shaft Adapter Pulley, Stainless Steel Crank Shaft Sleeve Adapter, W/Step Key Gas Engine Pulley Crank Shaft Sleeve Adapter Pulley Bore Reducer Bushing Sheave & Key Predator (Silver)

The MOXRUQ Shaft Adapter is designed to fit crankshafts from 3/4” to 1” in diameter, making it easy for you to adjust or replace your engine parts without hassle. It helps you modify motors with different shaft sizes and lets you reuse old clutches or pulleys, saving you money on new parts. Made from durable Stainless Steel 304, this adapter resists rust and provides strong protection for your crankshaft. Plus, its precise craftsmanship ensures it lasts longer and handles wear well, giving you a reliable and long-lasting solution for your engine needs.

What We Like
Fits 3/4” to 1” shafts
Allows pulley and clutch reuse
Durable stainless steel build
Rust-resistant material
Long-lasting craftsmanship
#TOP 8

MOTOKU Crankshaft Pulley for Honda and Acura

13810PNA003
MOTOKU Crankshaft Pulley for Honda and Acura Cover
MOTOKU Engine Harmonic Balancer Crankshaft Pulley for Honda Element 2003-2006 CR-V 2002-2006 Accord 2003-2005 for Acura TSX 2004-2008 RSX 2002-2006

The MOTOKU Crankshaft Pulley is designed for various Honda and Acura models, including the Element, CR-V, Accord, TSX, and RSX. This part ensures compatibility with vehicles from specific years, making it easy for you to find the right fit for your car. By replacing multiple part numbers, it provides a reliable solution for your engine needs. Using this pulley can help maintain your vehicle's performance and reduce vibrations, contributing to a smoother driving experience. Overall, this product offers convenience and peace of mind for car owners looking to enhance their engine’s functionality.

What We Like
Wide compatibility with models
Multiple part number replacements
Improves engine performance
Reduces vibrations
#TOP 9

GM Genuine Parts Crankshaft Pulley

10085754
Black
GM Genuine Parts Crankshaft Pulley Cover
GM Genuine Parts 10085754 Crankshaft Pulley

The GM Genuine Parts Crankshaft Pulley provides power to the engine accessory drive system for proper engine performance. The pulley is designed, engineered, and tested to rigorous standards by GM Engineers, specifically for Chevrolet, Buick, GMC, or Cadillac vehicles. GM regularly updates production and service part designs to integrate new materials and technologies.

What We Like
Designed, engineered, and tested to rigorous standards
GM Engineers design and validate OE parts specifically for your vehicle
Regularly updated to integrate new materials and technologies
#TOP 10

Arwrilt Stainless Steel Crankshaft Sleeve Adapter 3/4" to 1"

ARWTT2830SI-1PCS
Silver
1 PC
Arwrilt Stainless Steel Crankshaft Sleeve Adapter 3/4" to 1" Cover
Arwrilt Gas Engine Pulley Crank Shaft Sleeve Adapter, 3/4" to 1" Stainless Steel Shaft Adapter Pulley Predator, Pulley Bore Reducer Bushing Sheave with Step Key (Silver)

The Arwrilt Shaft Adapter is crafted from durable stainless steel, giving you a rust-resistant and strong solution for your engine needs. This adapter lets you easily fit pulleys or clutches with different shaft sizes, saving you money by avoiding the purchase of new parts. It's designed to fit crankshafts between 3/4” and 1” diameter, with a step key that fits various offsets for flexible use. Built to high standards with careful quality checks, this adapter ensures long-lasting performance and reliable wear resistance, making it a practical choice for your engine setup.

What We Like
Durable stainless steel
Fits multiple shaft sizes
Includes versatile step key
High-quality craftsmanship
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How do I know if my harmonic balancer is bad?

You can identify a bad harmonic balancer by several signs. These include engine vibrations, noticeable wobbling of the harmonic balancer, unusual noises, an illuminated check engine light, and visible wear or damage. If you experience any of these symptoms, it may indicate a problem with your harmonic balancer.

2. How do you know if your crankshaft is damaged?

Crankshaft damage can be recognized by certain indicators. If you hear a clacking sound that matches the engine speed, it could be a sign of a defect in the connecting rod bearings. Additionally, if you hear a rumbling or grumbling noise from deep within the engine, it may be an indication of crankshaft bearing issues.

3. What causes crankshaft pulley to go bad?

The crankshaft pulley is designed to last the lifetime of the engine. However, wear and tear, high temperatures, exposure to coolant or engine oil due to leaks can damage the rubber ring of the pulley. The rubber ring acts as a vibration dampener and holds together the internal and outer parts of the pulley. When this rubber ring gets damaged, it can lead to a faulty crankshaft pulley.

4. How long does it take to replace a crankshaft pulley?

Typically, replacing a crankshaft pulley takes around 1 to 1.5 hours.

5. Can a car run with a bad harmonic balancer?

No, it is not recommended to drive a car with a bad harmonic balancer. The vibrations from the engine can become too much for the crankshaft to handle, potentially causing it to fail. This can result in the car not running and requiring expensive repairs.

6. What happens if crankshaft pulley is loose?

A loose crankshaft pulley can cause various symptoms such as a loss or change in vehicle performance, knocking or increased vibration from the engine bay, and even metallic tapping as engine parts slip out of sync. These issues are noticeable while idling or under load.

7. What happens if your crankshaft pulley is wobbly?

A wobbly crankshaft pulley can lead to drive belt edge damage. The misalignment caused by the pulley can result in damage to the edges of the drive belt, as well as potential harm to the idle rollers and non-metallic pulleys.

8. What happens if you drive with a bad crankshaft?

Driving with a bad crankshaft can lead to various issues. The engine may stall unexpectedly, which can be dangerous while driving. It may also result in the engine not starting at all after being shut off, or the engine running rough, misfiring, or hesitating.

9. What are the two most usual causes of failure of the crankshaft?

The most common causes of crankshaft failure are installation faults and wear. Softening of the bearing journals due to previous bearing damage or improper modification work, such as excessive regrinding, can also contribute to crankshaft damage.

Editor's Notes

During our engine crankshaft pulley research, we found 24 engine crankshaft pulley products and shortlisted 10 quality products. We collected and analyzed 5,255 customer reviews through our big data system to write the engine crankshaft pulleys list. We found that most customers choose engine crankshaft pulleys with an average price of $25.59.

The engine crankshaft pulleys are available for purchase. We have researched hundreds of brands and picked the top brands of engine crankshaft pulleys, including 3mirrors, Subaru, DOVOSO, AULINK, Moker. The seller of top 1 product has received honest feedback from 216 consumers with an average rating of 4.9.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.