What size is the bleeder screw on a Toyota?

There isn't a single bleeder screw size for all Toyota vehicles. Most brake calipers use either M8 x 1.0 or M10 x 1.0 threads, typically with a 7 mm or 8 mm wrench, but the exact size depends on the model and year.

Why sizes vary across models

Toyota uses a range of brake caliper designs across different models and generations. Caliper construction, front versus rear brakes, and regional variations can influence the thread diameter and pitch of the bleeder screws. Because of this, there is no universal specification that covers every Toyota model.

Common bleeder screw sizes you may encounter

Before listing the sizes, note that these are the sizes most often seen on Toyota brake calipers. The exact size for your vehicle should be confirmed through the service manual or parts diagram for your model.

• Thread size M8 x 1.0 with a 7 mm hex head (Allen) or a slotted screwdriver head on some models.


• Thread size M10 x 1.0 with an 8 mm hex head (Allen) on a number of mid-size and some older Toyota calipers.

These sizes cover the majority of Toyota designs, but there are exceptions. Always verify via official documentation or a trusted parts diagram for your exact model and year.

How to confirm the exact bleeder screw size for your Toyota

Follow model-specific guidance to ensure the correct size before removal or replacement. The steps below help you identify the correct thread and tool size.

1. Identify your exact vehicle model, year, and whether you are dealing with front or rear calipers.


2. Refer to the official Toyota service manual or a trusted parts diagram for your model to find the bleeder screw specification.


3. Remove the bleeder screw and measure its diameter and pitch, or compare it to known standards (M8 x 1.0 or M10 x 1.0). Note the hex head size needed (commonly 7 mm or 8 mm).


4. Match the screw to the correct replacement part if needed, ensuring you choose a screw with the same thread size and a proper dust seal/gasket.


5. If in doubt, contact a Toyota dealer or an experienced mechanic to confirm the size before procurement or removal.

Using the correct size reduces the risk of cross-threading and caliper damage while ensuring effective brake system bleeding.

Additional considerations

Tool compatibility and safety

Always use a properly fitting wrench or hex socket. A poorly fitting tool can strip the bleeder screw head or damage the caliper. Apply penetrating oil if the screw is stubborn, and avoid forcing it if it does not loosen with reasonable effort.

Summary

There is no universal bleeder screw size for all Toyota models. Common thread sizes you may encounter are M8 x 1.0 and M10 x 1.0, with hex head sizes of 7 mm or 8 mm, but exact specifications vary by model and year. Always verify using the vehicle’s service manual, parts diagram, or a dealer to ensure you select the correct screw and tool for bleeding the brakes.

What size wrench for brake bleeder screw?

The most common size wrench for a brake bleeder valve is 10mm. However, other common sizes include 9mm and 11mm, and some domestic vehicles may use 3/8" or 7/16". A 6-point box end wrench is recommended to prevent stripping the valve. 
This video demonstrates how to use a wrench to bleed brake fluid: 58sTRQYouTube · Oct 1, 2024
Common sizes

• Metric: 10mm, 9mm, and 11mm
• SAE: 3/8" and 7/16" 

What to do

• Check the size: If possible, clean the bleeder valve and try fitting an adjustable wrench to see what size is needed before buying a specific wrench. 
• Use the right tool: A 6-point box end wrench is best to avoid rounding the valve, especially if it is corroded. 
• Be prepared for variations: Some bleeder valves may have been replaced with a non-standard size, so be prepared to use a 3/8" wrench even if you expect to use a metric one, or vice versa. 
• Use a flare nut or line wrench: These are designed to grip the valve securely and can prevent damage. 

You can watch this video to learn about different types of brake bleeder wrenches: 58sBallinatorYouTube · May 5, 2024

What size is the brake bleeder?

The most common metric brake bleeder valve sizes are 8mm, 9mm, 10mm, and 11mm, while a common fractional size is 1/4 inch (6.35mm). The specific size varies by vehicle make and model, so it is best to have a range of tools or to check the size of your vehicle's bleeder valves before starting. For tubing, a common size that fits over most bleeder valves is 1/4 inch (or 6mm) in diameter.
 
This video demonstrates how to make a one-person brake bleeder for under $5 using a 1/4 inch clear plastic tubing: 1mChrisFixYouTube · Jul 29, 2014

• Wrench/Socket Sizes: Common sizes for the wrench that fits over the bleeder screw head are 8mm, 9mm, 10mm, and 11mm for metric vehicles. 
• Tubing Size: A common size for the clear plastic tubing to fit over the bleeder nipple is 1/4 inch (6.35mm). 
• How to be sure: The most accurate way to know the correct size is to check the bleeder valve on your specific vehicle. You can use a wrench to check the size or a caliper for more precise measurement of the nipple, says a YouTube video. 
• Safety Tip: It is recommended to use a line wrench or a socket to avoid stripping the bleeder screw head, especially if it is rusted, according to Brakes To Go and Reddit users. 

You can also watch this video to learn how to make a one-person brake bleeder for a car or truck: 59sTutorialGenius.comYouTube · Sep 26, 2023

What size is the brake caliper bolt on a Toyota pickup?

12 x 1.25 x 29.5mm.

What size are Toyota brake bleeder screws?

Toyota brake bleeder screw sizes vary by model and year, but common sizes include M7x1.0, M8x1.25, and M10x1.0. To get the correct size, it is best to search for your specific vehicle, as different models use different thread sizes and lengths. 
Common sizes and variations

• Metric:
  • M7x1.0: Frequently used on certain Toyota models. 
  • M8x1.25: A common size, for example, on many Toyota Tacomas. 
  • M8x1.0: Another metric size found on some models. 
  • M10x1.0: Frequently used for models like the 2019 Tacoma, and other applications. 
• Standard (SAE):
  • 1/4"-28, 5/16"-24, and 3/8"-24: These are standard sizes that may be used on some older or specific Toyota vehicles. 

How to find the correct size for your vehicle

1. Identify your vehicle: Note the specific year, make, and model of your Toyota.
2. Search for parts: Use online parts retailers and search for "Toyota \[Your Vehicle Model] brake bleeder screw" to see the available options and their specifications. 
3. Check the original part: The most reliable method is to remove the existing bleeder screw and measure its thread diameter and pitch, or check the original part number for cross-referencing. 
4. Consult a parts professional: Contact a local auto parts store or a Toyota dealership for guidance.