★★★★★
June 14, 2025
Master cylinder
Old Master cylinder was leaking.
Replaces
Part Details
About TRQ:
TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
This part fits 16 vehicles spanning 1994-2000.
| Year | Make | Model | Description |
|---|---|---|---|
| 1994 | Chevrolet | C3500 Truck | Chevrolet C3500 Truck Brake Master Cylinder TRQ BCA51978 |
| 1995-2000 | Chevrolet | C3500 Truck | Chevrolet C3500 Truck with 1.25in Cylinder Bore Brake Master Cylinder TRQ BCA51978 |
| 1994 | Chevrolet | K3500 Truck | Chevrolet K3500 Truck with Dual Rear Wheels (DRW) Brake Master Cylinder TRQ BCA51978 |
| 1994 | Chevrolet | K3500 Truck | Chevrolet K3500 Truck with Single Rear Wheels (SRW) Brake Master Cylinder TRQ BCA51978 |
| 1995-2000 | Chevrolet | K3500 Truck | Chevrolet K3500 Truck with 1.25in Cylinder Bore Brake Master Cylinder TRQ BCA51978 |
| 1995 | Chevrolet | P30 | Chevrolet P30 with Motor Home Body with Master Cylinder Casting #14066425 with Rear Drum Brakes with Standard Duty Brakes Brake Master Cylinder TRQ BCA51978 |
| 1996 | Chevrolet | P30 | Chevrolet P30 with Motor Home Body with Master Cylinder Casting #14066425 with Rear Drum Brakes Brake Master Cylinder TRQ BCA51978 |
| 1997-1999 | Chevrolet | P30 | Chevrolet P30 with 1.25in Cylinder Bore with Rear Drum Brakes Brake Master Cylinder TRQ BCA51978 |
| 1994 | GMC | C3500 Truck | GMC C3500 Truck Brake Master Cylinder TRQ BCA51978 |
| 1995-2000 | GMC | C3500 Truck | GMC C3500 Truck with 1.25in Cylinder Bore Brake Master Cylinder TRQ BCA51978 |
| 1994 | GMC | K3500 Truck | GMC K3500 Truck with Single Rear Wheels (SRW) Brake Master Cylinder TRQ BCA51978 |
| 1994 | GMC | K3500 Truck | GMC K3500 Truck with Dual Rear Wheels (DRW) Brake Master Cylinder TRQ BCA51978 |
| 1995-2000 | GMC | K3500 Truck | GMC K3500 Truck with 1.25in Cylinder Bore Brake Master Cylinder TRQ BCA51978 |
| 1995 | GMC | P3500 | GMC P3500 with Motor Home Body with Master Cylinder Casting #14066425 with Rear Drum Brakes with Standard Duty Brakes Brake Master Cylinder TRQ BCA51978 |
| 1996 | GMC | P3500 | GMC P3500 with Motor Home Body with Master Cylinder Casting #14066425 with Rear Drum Brakes Brake Master Cylinder TRQ BCA51978 |
| 1997-1999 | GMC | P3500 | GMC P3500 with 1.25in Cylinder Bore with Rear Drum Brakes Brake Master Cylinder TRQ BCA51978 |
| Brand Label | Part Number |
|---|---|
| Dorman - First Stop | M390279 |
| Raybestos Brakes | MC390279 |
This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
FREE Shipping is standard on orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii and Alaska.
Shipping is not available to a P.O. Box, APO/FPO/DPO addresses, US Territories, or Canada for this item.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii.
Final shipping costs are available at checkout.
BCA51978
Old Master cylinder was leaking.
