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The Best Serpentine Belt Tool

Last updated on July 9, 2020

We looked at the top 10 Serpentine Belt Tools and dug through the reviews from 2 of the most popular review sites including Best Reviews Guide and more. The result is a ranking of the best Serpentine Belt Tools.

Best Serpentine Belt Tool

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Our Picks For The Top Serpentine Belt Tools

Show Contents
Our Take
Experts Included
Pros
Cons
  The Best Overall

Performance Tool W89716 Serpentine Belt Tool, 16-Piece

Performance Tool

W89716 Serpentine Belt Tool, 16-Piece

Overall Take

Several Extension BarsThis kit comes with several extension bars equipped for any job.

Experts Included
DWYM Tools Experts plus Best Reviews Guide. Along with user reviews from Amazon.
  The Best Value

Powerbuilt 648629 Alltrade 52 Serpentine Belt Tool Set

Powerbuilt

Alltrade 52 Serpentine Belt Tool Set

Overall Take

Well-Built ToolSturdy materials make this kit one to last.

Experts Included
DWYM Tools Experts plus . Along with user reviews from Amazon and Home Depot.

OEM TOOLS 25149 Serpentine Belt Tool Set

OEM TOOLS

Serpentine Belt Tool Set

Overall Take

Plenty of LengthThe bar and extension tool here offer plenty of reach.

Experts Included
DWYM Tools Experts plus Best Reviews Guide. Along with user reviews from Amazon.

OTC 7654A Serpentine Belt Installation Tool

OTC

7654A Serpentine Belt Installation Tool

Overall Take

Extra Installation HelpSave time and back pain with this belt installation tool.

Experts Included
DWYM Tools Experts plus . Along with user reviews from Amazon.
Don't just take for granted what one reviewer says. Along with our own experts, DWYM analyzes the top expert reviews of the leading products and generates a score you can actually trust.
17

Products Considered

We identified the majority of the serpentine belt tools available to purchase.
10

Products Analyzed

We then selected the leading and most popular products for our team to review.

View All Product Rankings

2

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: and Best Reviews Guide.

2,601

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including Amazon, Home Depot, Walmart.

Our experts reviewed the top 10 Serpentine Belt Tools and also dug through the reviews from 2 of the most popular review sites including Best Reviews Guide and more. The result is a ranking of the best of the best Serpentine Belt Tools.

DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.

Look for the DWYM seal for products that are the best in their category.

The Best Overall

Performance Tool W89716 Serpentine Belt Tool, 16-Piece

Our Expert Score
9.6
1 expert reviews
User Summarized Score
8.8
319 user reviews
Our Take

This tools is equipped with several interchangeable extension bars, enabling users to reach into most any space. Each extension bar is versatile in themselves, with both 15 and 16 mm bolts. The design makes it easy to configure no matter what belt system you're working with.

What other experts liked
What other experts didn't like

The Best Bang For Your Buck

Powerbuilt 648629 Alltrade 52 Serpentine Belt Tool Set

Our Expert Score
0.0
0 expert reviews
User Summarized Score
9.0
198 user reviews
Our Take

The main tool in this kit is built to last from forged steel. The case is likewise sturdy, and makes the various attachments easy to find. The extensions and bar are both low profile and can handle well in tight spaces.

What other experts liked
What other experts didn't like

Overall Product Rankings

Performance Tool W89716 Serpentine Belt Tool, 16-Piece

1. Performance Tool W89716 Serpentine Belt Tool, 16-Piece

Overall Score: 9.9
Reviews Included: 3

Powerbuilt 648629 Alltrade 52 Serpentine Belt Tool Set

2. Powerbuilt 648629 Alltrade 52 Serpentine Belt Tool Set

Overall Score: 9.5
Reviews Included: 3

OEM TOOLS 25149 Serpentine Belt Tool Set

3. OEM TOOLS 25149 Serpentine Belt Tool Set

Overall Score: 9.4
Reviews Included: 2

OTC 7654A Serpentine Belt Installation Tool

4. OTC 7654A Serpentine Belt Installation Tool

Overall Score: 9.3
Reviews Included: 3

GEARWRENCH Serpentine Belt Tool Set, 15-Pieces

5. GEARWRENCH Serpentine Belt Tool Set, 15-Pieces

Overall Score: 9.2
Reviews Included: 3

EWK Mini Cooper Serpentine Tool Belt Tensioner

6. EWK Mini Cooper Serpentine Tool Belt Tensioner

Overall Score: 9.1
Reviews Included: 3

ATD Tools 8604 Tru-Grip Serpentine Belt Tool

7. ATD Tools 8604 Tru-Grip Serpentine Belt Tool

Overall Score: 9.0
Reviews Included: 1

CTA Tools 1016 Mini Cooper Serpentine Belt Tool Set

8. CTA Tools 1016 Mini Cooper Serpentine Belt Tool Set

Overall Score: 8.9
Reviews Included: 2

Fairmount Tools Ratcheting Serpentine Belt Wrench Tool Kit

9. Fairmount Tools Ratcheting Serpentine Belt Wrench Tool Kit

Overall Score: 8.8
Reviews Included: 1

Lisle 59000 Ratcheting Serpentine Belt Tool

10. Lisle 59000 Ratcheting Serpentine Belt Tool

Overall Score: 8.8
Reviews Included: 2

Our Serpentine Belt Tool Findings

Performance Tool W89716 Serpentine Belt Tool, 16-Piece

What We Liked: This tools is equipped with several interchangeable extension bars, enabling users to reach into most any space. Each extension bar is versatile in themselves, with both 15 and 16 mm bolts. The design makes it easy to configure no matter what belt system you’re working with.

Powerbuilt 648629 Alltrade 52 Serpentine Belt Tool Set

What We Liked: The main tool in this kit is built to last from forged steel. The case is likewise sturdy, and makes the various attachments easy to find. The extensions and bar are both low profile and can handle well in tight spaces.

OEM TOOLS 25149 Serpentine Belt Tool Set

What We Liked: The grip on this tool makes tough jobs a bit easier. The length of the bar is also an asset, especially when you add the extension. Both are compatible with 1/2 inch and 3/4 inch square drives.

OTC 7654A Serpentine Belt Installation Tool

What We Liked: This tool is specifically designed for help in maneuvering the actual serpentine belt — not releasing the tension bar. That said, it makes the placement of the belt much easier. The three-pronged head is designed to fit into grooves on both V-belts and timing belts.

GEARWRENCH Serpentine Belt Tool Set, 15-Pieces

What We Liked: This set combines a sturdy serpentine belt bar with a ratchet wrench that can be attached on the end. They can be configured in a variety of ways to suit awkward angles. The crow’s foot attachments are a big help and come in several sizes.

Our Serpentine Belt Tool Buying Guide

There are tools in a mechanic’s garage that are absolutely necessary and are well suited to a variety of jobs: The ratchet wrench, pliers, a crowbar and the like. Let’s be clear that a serpentine belt tool is not one of those items. It’s specifically designed for one job, although it can be surprisingly adaptable (especially in cramped spaces). But ask any mechanic who has had to that difficult job and they’ll swear by this deceptively simple bar.

First, a little background on the serpentine belt. This aptly-named strip of reinforced rubber is an essential part of the system that drives any component not powered directly by the car’s engine. Most often, that includes but is not limited to the alternator, power steering, emissions control systems and the water pump. As you can imagine, things can go south very quickly if this belt breaks or slips off its pulleys — but it does happen.

The problem is that replacing this simple belt can be a time-consuming activity for any professional mechanic, not to mention an amateur one. The belt snakes over a series of pulleys that are attached to the accessories that it powers, and those pulleys are usually placed far apart in cramped areas towards the front of the engine compartment. In most cars, there is a tension mechanism that you can adjust with a wrench, thereby loosening the belt. Mechanics might need to remove several components like the wheel well or engine cover in order to get enough elbow room to loosen that tensioner — if they’re doing it the hard way.

The easy way is to use a serpentine belt tool. Bear in mind there are actually two types of serpentine belt tools: One specifically designed for getting to and adjusting that pesky tensioner, and the other to help you grab and place the belt.

In its most basic form, the first kind is a long, thin bar with a drive square on one end. Once you put the correct socket on, you’ve got a wrench that can extend down into the hard-to-reach areas under the hood. You can use it to adjust the tensioner without having to take half your car apart, and that can save a lot of time and sweat.

These tools will often come in kits that include not just an array of common sockets for the job, but one or more extension bars. In some cars, the tensioner isn’t just placed in a tight spot; it can also be in an awkward one. Extension bars can be added to the end of a serpentine belt tool, allowing you to get leverage from a variety of angles. In many cases, you can even fasten a standard wrench onto the end of the tool.

The second kind of serpentine belt tool is used not to loosen the pulleys, but to manipulate the belt itself. Serpentine belts can wind across many pulleys in spots that are even more difficult to access than the tensioner. A serpentine belt installation tool is a long rod with a two or three-pronged fork at the end. This fork is situated at a right angle to the main bar, and the tines are meant to fit between the grooves in the belt. This makes it much easier to grab and stretch over pulleys without having to actually reach them.

In either case, you’ll want it made of sturdy metal. That’s especially true for the first type of serpentine belt tool, which is going to be subject to a lot of pushing and pulling. A selection of the different socket sizes is a big plus, especially if you plan to work on more vehicles than just your own. And don’t overlook the grip: A non-slip rubber handle can make all the difference when you’re leaning into a too-tight tensioner.

DWYM Fun Fact

Serpentine belts are fairly ubiquitous these days, but they’re actually a fairly recent innovation. The first cars to use a serpentine belt were Ford Mustangs in the late 1970s, thanks to the design of inventor Jim Vance. They quickly caught on, and by the mid-80s were commonplace in most cars.

The Serpentine Belt Tool Tips and Advice

It’s typically pretty easy to tell if your serpentine belt needs to replaced in the first place. There are even tiny gauges that can measure the acceptable level of wear in your grooves if you really want to do your own diagnosis. But while you’re looking for wear, check your tensioner arm first by giving it a look while the engine is running. A smoothly-operating tensioner should run without wobbling in the belt at all, though the tensioner itself might vibrate slightly. If the tensioner arm is moving side to side by 1/4 inch or more, you may want to have it replaced before it puts more wear onto a new serpentine belt.