Mach-E Brembo Upgrade with Part #'s

[stangg17]

I used the 362mm rotors…

NAPA part numbers are as follows:

GRT 48882744 for non coated rotors.
UP 882744CR for coated rotors

Calipers weren't from Napa?

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[Frenchy906]

Calipers weren't from Napa?

Negative. Found a set on eBay from a 2024 with 17k miles on them for $290.

 

[ZUMNMAV]

PSA:

I know most of us don’t think twice about this but …

After mocking everything up and measuring 9,000 times it looks like to center the caliper on the rotor you’re going to need a 3mm washer.

After looking around, it was surprisingly difficult to find a M12 washer with a 3mm thickness that was grade 8 or better.

I ended up using the ARP 200-8533 which are hardened chrome moly steel 8740 heat treated washers , which exceed grade 8 hardware specs and fit the m12 bolt.

I know … it’s just a washer Calm down expert metallurgy

But, When it comes to brakes, or any other critical component, please don’t just go with what fits. The wrong washer could deform under the torque spec / clamp load and the bolt could back out over time. Every alloy has different specs and for different purposes.

Hopefully this saves someone else the time I spent searching for a washer.

 

[stangg17]

Negative. Found a set on eBay from a 2024 with 17k miles on them for $290.

Thanks for the info!

 

[Grammaton]

PSA:

I know most of us don’t think twice about this but …

After mocking everything up and measuring 9,000 times it looks like to center the caliper on the rotor you’re going to need a 3mm washer.

After looking around, it was surprisingly difficult to find a M12 washer with a 3mm thickness that was grade 8 or better.

I ended up using the ARP 200-8533 which are hardened chrome moly steel 8740 heat treated washers , which exceed grade 8 hardware specs and fit the m12 bolt.

I know … it’s just a washer Calm down expert metallurgy

But, When it comes to brakes, or any other critical component, please don’t just go with what fits. The wrong washer could deform under the torque spec / clamp load and the bolt could back out over time. Every alloy has different specs and for different purposes.

Hopefully this saves someone else the time I spent searching for a washer.

How do these measure up thickness wise?

I found these also to try from Amazon: MECCANIXITY 5 Pcs 304 Stainless Steel M12 Flat Washers 13mm ID, 30mm OD, 3mm Thick. Bought a few paks (4) and kept the ones that measured out to 3mm exactly with a digital caliper. Not quite Grade 8 (800MPa), but these are 512MPa and non corrosive.
https://a.co/d/0fFiuYO5

 

[ZUMNMAV]

How do these measure up thickness wise?

I found these also to try from Amazon: MECCANIXITY 5 Pcs 304 Stainless Steel M12 Flat Washers 13mm ID, 30mm OD, 3mm Thick. Bought a few paks (4) and kept the ones that measured out to 3mm exactly with a digital caliper. Not quite Grade 8 (800MPa), but these are 512MPa and non corrosive.
https://a.co/d/0fFiuYO5

the ARP are hardened and all of them are exactly 3mm thick.

High-strength washers for engines, suspension, and brakes are made from heat-treated alloy steel, 304 stainless doesn’t have the abilities to resist deformation under high torque like hardened treated alloys.

Specs to look for that are grade 8 substitutes


Made to ASTM, SAE, or ISO structural standards

Grade 8, Class 10.9, Class 12.9

300 HV hardness (or higher)

Chromoly (such as 8740 steel) ARP Washers

 

[Frenchy906]

Just completed an unexpected 440 mile round trip to go spend the evening with my lady friend. She’s also got a ‘25 Bronco Sport.

Brakes felt incredible, very good stopping power. Couldn’t be happier with this modification. Highly recommended for how easy it was.

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