OE Quality
60-Day Returns

Carlson 7739 Disc Brake Caliper Piston - Front or Rear
Reliable Disc Brake Caliper Piston for Mercedes-Benz and Volvo
The Carlson Disc Brake Caliper Piston 7739 is designed to restore proper braking function in select Mercedes-Benz and Volvo vehicles. Engineered to meet OEM specifications, this piston ensures consistent performance and durability for your brake system.
- Compatible with Mercedes-Benz 240, 300D, and 300TD models
- Also fits Volvo vehicles requiring this specific caliper piston
- Part number 7739 for precise identification and fitment
- Manufactured by Carlson, known for quality brake hydraulics components
- Designed to maintain proper caliper operation and brake pad alignment
About the Carlson Disc Brake Caliper Piston Product Line
The Carlson Disc Brake Caliper Piston line focuses on providing replacement pistons that meet strict quality and dimensional standards. These pistons are engineered to fit specific vehicle models, ensuring reliable brake caliper function and helping maintain the integrity of the brake hydraulic system. The 7739 piston is part of this line, offering a direct replacement solution for Mercedes-Benz and Volvo disc brake calipers.
Product Details and Compatibility
This disc brake caliper piston is designed for use in the brake hydraulic system of Mercedes-Benz 240, 300D, and 300TD models, as well as compatible Volvo vehicles. The part number 7739 corresponds to this exact piston, ensuring a proper fit and function. Using the correct piston helps maintain even brake pad wear and consistent braking pressure, which is critical for vehicle safety and performance.
Common Issues Addressed by This Caliper Piston
- Brake caliper sticking or uneven pad wear
- Reduced braking efficiency due to piston corrosion or damage
- Brake fluid leaks from worn or damaged pistons
- Brake drag caused by piston misalignment
- Restoring proper brake caliper movement and pressure
Installation Notes and Tips
When installing the Carlson Disc Brake Caliper Piston 7739, ensure the caliper bore is clean and free of debris. Lubricate the piston with appropriate brake fluid or assembly grease to facilitate smooth movement. Verify that the piston seals are in good condition or replaced as needed to prevent leaks. Proper installation will help maintain brake system integrity and performance.
Quality Assurance and Warranty
Carlson manufactures this disc brake caliper piston to meet or exceed OEM standards for fit and function. While specific warranty details are not provided, Carlson products typically undergo rigorous quality control to ensure reliability in brake hydraulic applications.
This part fits 11 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1993 | Volvo | 240 | Rear | D31; Disc Brake Caliper Piston |
| 1992 | Volvo | 240 | Rear | D31; Disc Brake Caliper Piston |
| 1991 | Volvo | 240 | Rear | D31; Disc Brake Caliper Piston |
| 1990 | Volvo | 240 | Rear | D31; Disc Brake Caliper Piston |
| 1980 | Mercedes-Benz | 300D | Front | D145; Disc Brake Caliper Piston |
| 1979 | Mercedes-Benz | 300D | Front | D145; Disc Brake Caliper Piston |
| 1979 | Mercedes-Benz | 300TD | Front | D145; Disc Brake Caliper Piston |
| 1978 | Mercedes-Benz | 300D | Front | D145; Disc Brake Caliper Piston |
| 1977 | Mercedes-Benz | 300D | Front | D145; Disc Brake Caliper Piston |
| 1976 | Mercedes-Benz | 300D | Front | D145; Disc Brake Caliper Piston |
| 1975 | Mercedes-Benz | 300D | Front | D145; Disc Brake Caliper Piston |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.