Porsche 996 Turbo Caliper Part Numbers: A Complete Guide

If you own a Porsche 996 Turbo, you know the braking system is critical for performance and safety. Over time, calipers may need replacement or rebuilding. Knowing the correct part numbers saves time and ensures you get the right components. This guide covers all OEM part numbers for 996 Turbo calipers, including rare variants and compatibility notes.

Front Caliper Part Numbers

The 996 Turbo uses monobloc calipers from Brembo. These are four-piston fixed calipers, often painted red or black. The part number is stamped on the caliper body, but it can be hard to read without removal. Here are the numbers you need:

Standard Front Left (Driver Side)

• Part Number: 996.351.423.05
  This caliper fits the left front (driver side in LHD vehicles). It includes the piston assembly and bleeder valve.

Standard Front Right (Passenger Side)

• Part Number: 996.351.424.05
  For the right front. Both sides are not interchangeable due to bleed screw orientation.

Front Caliper with Porsche Logo

Some later production 996 Turbo models (2002-2005) have calipers with embossed Porsche script. The part numbers are the same but may have suffix changes. Check for:

• 996.351.423.06 (left)
• 996.351.424.06 (right)
  These supersede the .05 versions and are direct replacements.

X51 Power Kit Calipers

If your 996 Turbo is equipped with the X51 performance package, the front calipers are identical to standard ones. No different part number is required. The X51 upgrade only affects the engine and exhaust.

Rear Caliper Part Numbers

The rear calipers are also Brembo four-piston units but are smaller than fronts. They share construction with the standard 996 Carrera 4S but have specific part numbers for the Turbo.

Standard Rear Left

• Part Number: 996.352.423.06
  This applies to the left rear. It includes the parking brake mechanism (integrated drum-style).

Standard Rear Right

• Part Number: 996.352.424.06
  Again, right side. Do not swap sides.

Rear Caliper with Ceramic Composite Brakes (PCCB)

If your 996 Turbo has PCCB (carbon ceramic brakes), the rear calipers are visually similar but have a different part number due to different piston sizes and heat shields. They are:

• 996.352.423.07 (left)
• 996.352.424.07 (right)

Note: PCCB calipers are extremely expensive to replace. Many owners retro-fit steel disc calipers to save cost. The steel disc calipers from a standard 996 Turbo will bolt onto PCCB-equipped cars if you also swap the brake lines and master cylinder (though upgrading the master cylinder is not strictly required).

Caliper Rebuild Kits and Associated Parts

When overhauling calipers, you may need seals, pistons, and bleed screws. These are not part of the caliper assembly itself.

Front Rebuild Kit

• Part Number: 996.351.939.00
  Contains all seals, dust boots, and bleeder caps for both front calipers.

Rear Rebuild Kit

• Part Number: 996.352.939.00
  Same content for the rear. These kits are inexpensive compared to buying new calipers.

Caliper Pistons

If pistons are corroded, you can buy them individually. Front piston part number: 996.351.161.00 (set of 4). Rear piston: 996.352.161.00.

How to Confirm Your Caliper Part Number

Visual identification may not always be reliable because late-model 996 Turbos have slightly different castings. The best way to confirm is to look at the caliper stamp. On most 996 Turbo calipers, the part number is engraved near the brake pad retaining pin holes, on the inner (inboard) side. It is a 10- or 11-digit number starting with 996. If you cannot read it due to dirt or corrosion, use a flashlight and a mirror. Alternatively, unscrew one of the banjo bolts (be careful not to lose the copper washers) and check for a number under the grime.

You can also cross-reference your VIN with Porsche’s parts catalog. Many dealers can look up the original part number from the vehicle’s build sheet. However, be aware that calipers may have been replaced already, so the VIN lookup might not show the part currently installed.

Common Pitfalls When Ordering

• Left vs. Right: Never assume both calipers are the same. Bleeder screw orientation requires a specific side. Installing a left caliper on the right side will cause the bleeder to be at the bottom, making bleeding impossible without removing the caliper.
• Turbo vs. Carrera: Earlier 996 Carrera calipers look similar but are not identical. The Turbo calipers have larger pistons and different mounting brackets. Do not substitute Carrera calipers on a Turbo unless you are also changing the rotors and pads.
• PCCB vs. Steel: If your car originally had PCCB, the rear calipers are different. Using steel disc calipers on PCCB rotors is not recommended because the caliper piston area is matched to the rotor diameter and pad friction. Mixing can cause unbalanced braking.
• Supersession: Porsche regularly updates part numbers. If you order from a dealer, the numbers above may have been superseded. Always ask for the number that fits your VIN. The numbers listed are the most common for 2001-2005 model years.

Aftermarket Considerations

While this guide focuses on OEM part numbers, many aftermarket companies offer calipers that fit the 996 Turbo. However, if you want to maintain originality or ensure plug-and-play fitment, OEM calipers are the safest choice. Used calipers can be sourced from salvage yards, but verify the part number before purchase. A caliper from a 996 C4S will not work on a Turbo without changing the carrier.

If you are rebuilding your existing calipers, the OEM rebuild kit is recommended. It includes genuine rubber seals that withstand high brake fluid temperatures better than generic kits.

Final Recommendation

Start by confirming the part numbers on your current calipers. If they are the originals, order the exact same number for replacement. If you are upgrading to larger rotors or more aggressive pads, consider a complete brake kit from Brembo or StopTech that includes calipers, rotors, and pads matched to your Turbo. For a street-driven car, sticking with OEM calipers and using high-quality pads and rotors is more than sufficient. Always replace calipers in pairs (both fronts or both rears) to maintain even braking force.

Keep your caliper part numbers in a maintenance log. When you eventually need to replace pads or rotors, you'll quickly cross-reference the correct parts. A little preparation now saves headaches later.