SCITOO Rear Left & Right Disc Brake Calipers Assembly for Mazda 3

In this review the SCITOO rear disc brake calipers assembly is evaluated for owners of Mazda 3 and Mazda 3 Sport models from the mid 2000s to early 2010s. The bottom line: this kit is aimed at drivers who need a direct replacement for worn rear calipers and want a durable, OE-matching fit without modification. The reviewer found the assemblies deliver solid stopping power, include brackets and mounting hardware for straightforward installation, and use iron pistons and coating treatments intended to meet or exceed original equipment standards.

Key Features

• Vehicle Compatibility: Designed specifically for Mazda 3 L4 2.0L 2004-2013 and Mazda 3 Sport 2.0L 2009-2013, so buyers get a direct-fit rear caliper solution.
• Complete Pair: Includes both rear driver and passenger side calipers with brackets, which saves time compared with sourcing parts individually.
• Durable Construction: Iron piston material and a coated finish provide corrosion resistance and long service life in varied road conditions.
• OE Reference: Supplied as replacements corresponding to OE numbers 19B2954 (driver) and 19B2955 (passenger), which helps ensure correct part selection.
• Installation Ready: Comes with mounting hardware and is intended for direct installation without modification, reducing workshop hours.

Who It's For

This kit is best for do-it-yourselfers and independent repair shops working on Mazda 3 or Mazda 3 Sport vehicles that require rear caliper replacement and prefer a full pair with brackets. It suits owners who value a part built to match OE references and who want the convenience of included hardware.

It is not ideal for vehicles outside the specified model years or engine configuration, and buyers seeking upgraded performance calipers or different piston materials should look at performance or aftermarket specialty options instead.

Pros & Cons

Pros

• Provides a direct-fit replacement for rear driver and passenger sides, simplifying repairs.
• Coated finish and iron pistons give a balance of durability and reliable function under normal driving conditions.
• Includes brackets and mounting hardware, making installation quicker and more convenient.

Cons

• Some users reported a mixed experience with bolt size in the hardware pack, so verify fittings during installation.
• Not a performance upgrade; intended as an OE-style replacement rather than a high-performance caliper.

Specifications

Compatibility	Mazda 3 L4 2.0L 2004-2013; Mazda 3 Sport 2.0L 2009-2013
Installation Position	Rear driver and passenger side
OE Numbers	19B2954 (driver), 19B2955 (passenger)
Brake Piston Count	1 piston per caliper
Piston Material	Iron
Piston Diameter	1.5 in (38mm)
Inlet and Bleeder Port Size	M10 x 1.0

Our Verdict

The SCITOO rear caliper pair is a practical, cost-conscious choice for Mazda 3 owners who need a reliable OE-style replacement. With included brackets and hardware and iron pistons with a coated finish, it balances durability and ease of installation, making it good value for routine brake system maintenance-provided buyers confirm the hardware bolt sizes before final assembly.

Frequently Asked Questions

Are these calipers a direct fit for my Mazda 3?
They are designed for Mazda 3 L4 2.0L 2004-2013 and Mazda 3 Sport 2.0L 2009-2013 and match OE numbers 19B2954 and 19B2955 for direct-fit replacement.

Do the calipers include hardware and brackets?
Yes, the assemblies come with brackets and mounting hardware intended to allow direct installation without modification.

What if the included bolts do not match my car?
Some customers reported a mixed bolt size experience; it is wise to verify bolt fitment and have replacement bolts on hand if needed.