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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
Front Aluminium S Brake Caliper
Restore the braking performance of your classic Porsche with
this OE Match Front Aluminium S Brake Caliper. Manufactured to replicate the original factory
specification, these direct replacement calipers replace Porsche part numbers 91135193500
(left) and 91135193600 (right).
Fits:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
The lightweight aluminium S-Caliper was originally developed
to deliver exceptional braking performance while reducing unsprung weight,
making it one of the most recognisable and sought-after brake calipers fitted
to early air-cooled Porsche 911 models. Whether you're carrying out a concours
restoration or replacing worn original components, this OE Match caliper offers
factory-style fit, appearance and dependable braking performance.
The S calipers were first introduced in 1969 on Porsche 911 cars equipped with vented discs. It was also used on Porsche race car model 908. This caliper has 48mm size piston.
What Does the Front Brake Caliper Do?
The front brake caliper is a critical component of your Porsche's braking system.
Its primary functions include:
- Housing the brake pistons that apply pressure to the brake pads.
- Converting hydraulic brake fluid pressure into clamping force.
- Squeezing the brake pads evenly against the brake disc to slow or stop the vehicle.
- Delivering balanced braking performance and pedal feel.
- Helping maintain safe, predictable stopping under all driving conditions.
The lightweight aluminium construction also reduces unsprung weight, contributing to improved steering response, suspension performance and handling.
Why Do Brake Calipers Fail?
After decades of service, brake calipers are exposed to heat, moisture, brake dust and road contaminants, which can eventually affect their performance.
Common causes of failure include:
- Internal corrosion from contaminated brake fluid.
- Seized or sticking pistons.
- Worn or damaged piston seals allowing fluid leaks.
- Corrosion beneath dust seals.
- Damaged bleed screw threads.
- External corrosion and cosmetic deterioration.
- Physical damage caused by impact or improper maintenance.
A sticking or leaking caliper can reduce braking efficiency, increase brake pad wear and compromise vehicle safety.
When Should They Be Replaced?
Replacement is recommended when:
- Brake fluid is leaking from the caliper.
- Pistons seize or fail to retract correctly.
- Uneven brake pad wear is present.
- Braking performance or pedal feel has deteriorated.
- The caliper body has been damaged or heavily corroded.
- Restoring a classic Porsche to factory specification.
- Existing calipers are beyond economical repair.
Replacing worn brake calipers restores braking balance, improves safety and ensures reliable performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135193
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Brand New units sold without an exchange
Porsche 911 1969 - 1972 E/S
Porsche 911 1973 - 1983 2.7L / 3.0L SC
This OE Match, brand-new rear M-type brake caliper is engineered to match the original fitment and braking performance used on classic Porsche 911 models from 1969–1983. Supplied as a new unit and sold outright, it requires no exchange or surcharge, making replacement straightforward.
Manufactured to OE-matching dimensions and specifications, this caliper restores correct pad clamping and consistent braking feel when the original unit has become worn, corroded, leaking, or prone to sticking. Being a new assembly, it eliminates the downtime and inconvenience associated with refurbished or exchange calipers.
The caliper converts hydraulic brake pressure into mechanical clamping force, pressing the brake pads against the disc to slow and stop the vehicle. A properly functioning caliper ensures even pad wear, stable braking response, and predictable pedal feel - especially important on older vehicles where age-related corrosion and seal deterioration are common.
A worn or failing caliper can lead to pulling under braking, uneven pad wear, overheating, fluid leaks, or a soft and inconsistent brake pedal. Replacing the caliper helps restore safe, reliable braking performance while protecting pads and rotors from damage caused by sticking pistons or uneven clamping force.
When to Replace:
• Brake fluid leaking around the caliper or piston seals
• Sticking caliper causing brake drag or excessive wheel heat
• Uneven brake pad wear between left and right sides
• Pulling under braking or inconsistent pedal feel
• Corrosion damage or seized bleed screws during servicing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135290
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Brand New units sold without an exchange
Porsche 911 1969 - 1972 E/S
Porsche 911 1973 - 1983 2.7L / 3.0L SC
OE Match, brand-new rear “M-type” brake caliper made to match original fitment and braking performance on classic Porsche 911 models from 1969–1983. It’s sold outright (no exchange/surcharge required).
Built to OE-matching dimensions and specifications, it restores proper pad clamping and consistent braking feel when your original caliper is sticking, leaking, corroded, or worn internally. Supplied as a new unit, it avoids the downtime and core-return hassle of exchange calipers.
It converts hydraulic brake pressure into mechanical clamping force, pressing the pads onto the rotor to slow and stop the vehicle. A healthy caliper helps deliver even pad wear, stable braking response, and predictable pedal feel - especially important on older cars where original calipers may suffer from age-related corrosion and seal deterioration.
Function:
• Hydraulic-to-mechanical braking: Uses piston movement to clamp pads against the disc.
• Braking balance & stability: Supports even braking on the rear axle for controlled stops.
• Service-friendly replacement: New caliper unit simplifies restoration/maintenance without needing a core return.
A tired caliper can cause pulling under braking, uneven pad wear, overheating, leaks, or a soft/inconsistent pedal. Replacing the caliper helps restore safe, consistent braking performance and protects rotors and pads from damage caused by sticking pistons or uneven clamping.
When to replace :
• Brake fluid leak around the caliper/piston area
• Caliper sticking (wheel running hot, dragging brakes)
• Uneven pad wear side-to-side
• Pulling under braking or inconsistent pedal feel
• Corrosion damage or seized bleed screw issues during servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135290
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
M-Type Caliper / Two piece
Caliper fixing points are 75mm apart.
Porsche 911 1965-75 FRONT
F >> 91-15101 182
F >> 91-15110 920
F >> 91-15202 045
F >> 91-15211 217
F >> 91-15300 373
F >> 91-15310 241
F >> 91-15400 341
F >> 91-15410 147
(Will not fit 912)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135190
The product you are viewing cross references to these numbers