Porsche Part PAD-907-255-B: Complete Guide to This Brake Pad

The Porsche part number PAD-907-255-B refers to a specific brake pad set used in select Porsche models. If you're researching this part, you likely need to replace worn pads or verify compatibility for a repair. This guide covers what PAD-907-255-B is, which vehicles use it, how to distinguish genuine components from aftermarket alternatives, and practical tips for installation and maintenance.

What Is Porsche Part PAD-907-255-B?

PAD-907-255-B is an original equipment (OE) brake pad set manufactured by Porsche. The "PAD" prefix indicates it's a brake pad assembly, while the numeric sequence identifies the specific compound, shape, and backing plate design. These pads are produced to meet Porsche's strict performance and safety standards, ensuring consistent stopping power, low noise, and long service life under normal driving conditions.

Key Features

• Material: Semi-metallic or ceramic compound (exact formulation varies by model year).
• Fitment: Designed for specific calipers and rotors; not universal.
• Includes: Typically four pads (two per axle) plus any required hardware like clips or wear sensors.
• Certification: Meets Porsche's OE specifications for friction coefficient and thermal stability.

Compatibility and Vehicle Fitment

Not all Porsche models use PAD-907-255-B. This part number is primarily associated with the following vehicles:

| Model | Years | Notes | |-------|-------|-------| | Porsche 911 (991.2) | 2016–2019 | Base (Carrera, Carrera S) | | Porsche 718 Boxster/Cayman | 2017–2020 | 2.0L and 2.5L turbo | | Porsche Macan (95B) | 2014–2020 | Base and S trims | | Porsche Cayenne (9Y0) | 2018–2021 | Base and E-Hybrid |

Always verify using your vehicle's VIN or a Porsche parts catalog before purchasing.

How to Confirm Fitment

1. Check your VIN: Use a Porsche dealer or online VIN decoder to see which parts are original.
2. Inspect existing pads: Look for the part number stamped on the backing plate or printed on the box if you still have the old set.
3. Consult a professional: A shop specializing in Porsche can cross-reference if you're unsure.

How to Identify Genuine vs Aftermarket Prototypes

With many aftermarket brake pads claiming OE replacement status, it's critical to know what distinguishes genuine PAD-907-255-B.

Genuine Porsche Pads

• Packaging: Official Porsche box with part number, barcode, and hologram sticker.
• Hardware: Includes original clips, springs, and wear sensors (if applicable).
• Appearance: Backing plate has precise machining; friction material is uniform and may have a slight chamfer at the edges.
• Price: Higher than aftermarket, reflecting R&D and quality control.

Red Flags for Counterfeit or Inferior Parts

• Missing or poorly printed part numbers.
• Incorrect weight or dimensions (genuine pads are within 1% of spec).
• No wear sensor connector when required.
• Unusually low price from unverified sellers.

Why Genuine Matters

Using non-OE pads can lead to:

• Reduced braking performance under high heat.
• Increased brake dust and noise.
• Premature rotor wear or vibration.
• Potential ABS or brake assist malfunctions (on later models with electronic brake boost).

Installation Considerations

While brake pad replacement is a common DIY task, PAD-907-255-B installation requires attention to detail.

Tools You'll Need

• Jack and jack stands
• Lug wrench
• Brake caliper tool (for piston retraction)
• Torque wrench (for caliper bolts)
• Anti-seize compound (for slide pins)
• Clean rags and brake cleaner

Step-by-Step Overview

1. Prepare the vehicle: Lift and secure on stands. Remove wheels.
2. Remove caliper: Unbolt caliper carrier or slide caliper off rotor (varies by model).
3. Remove old pads: Note orientation and wear sensor placement.
4. Compress caliper piston: Use a tool to push piston back into bore.
5. Install new pads: Apply brake grease to backplate contact points (not friction surface).
6. Reinstall caliper: Torque bolts to spec (typically 30–35 Nm for guide pins, 100–120 Nm for carrier bolts).
7. Bed-in procedure: Drive gently for first 100–200 miles, avoid heavy braking, then perform several moderate stops from 30 mph to 10 mph to seat the pads.

Important: Some Porsche models require a brake service mode via diagnostic tool to retract the electronic parking brake. Confirm your model's requirements before starting.

Common Mistakes

• Forgetting to install wear sensors (triggers warning light).
• Overtightening caliper bolts (strips threads).
• Using old hardware (clips may be corroded or fatigued).
• Not cleaning the rotor hub (causes runout).

Maintenance Tips for Longevity

To get the most from your PAD-907-255-B pads:

Break-In Period

New pads need a proper break-in. For the first 300 miles:

• Avoid hard stops (unless emergency).
• Do not ride the brakes.
• Allow pads to cool between moderate stops.

Routine Checks

• Inspect pad thickness every 6 months or 5,000 miles.
• Listen for squealing (often indicates wear sensor contact or glazing).
• If you feel pulsing in the pedal, rotors may be warped, requiring resurfacing or replacement.

Driving Style

• Gentle braking preserves pad life and reduces dust.
• On track days, consider a higher-temperature pad; these are street pads.

Final Recommendation

For drivers who want reliable, OE-spec braking without performance compromises, Porsche part PAD-907-255-B is a solid choice. It offers predictable bite, low noise, and durability that matches the vehicle's original setup. However, if you track your car frequently or desire more aggressive stopping power, aftermarket options like Pagid RS29 or Brembo Sport may suit you better—but require additional research into compatibility and hardware.

Where to Buy

Purchase from authorized Porsche dealers or reputable independent parts suppliers that guarantee genuine origin. Avoid online auction sites or unknown sellers offering prices that seem too good to be true. Always ask for proof of authenticity (photos of the part number, packaging, and receipt) before buying.

If you need the exact part for a specific VIN, a dealer will provide the most accurate fitment. For budget-conscious owners, aftermarket pads like Textar or Jurid (which often manufacture OE parts) can be a cost-effective alternative, but confirm they match the performance envelope you expect.

In summary, PAD-907-255-B is the correct replacement for many Porsches from the 2010s and 2020s. By following fitment checks, installation best practices, and proper break-in, you can restore your brakes to factory performance and safety.