Product details
What you need to know
Compatibility, included parts, and service notes for this product.
In the kit
- BC-42 Master Cylinder Cap Adapter- GM 2013+
Service note
These are low pressure adapters designed for 15-17 psi. Adapter sold separately to connect to pressure bleeder
Product specs
Built for the job
Designed for 15-17 psi, the BC-42 creates a secure seal on compatible newer GM reservoirs. The connector for the pressure bleeder is sold separately.
Fitment Part
Family
Adapter
Use case
DIY / Home GarageProfessional Shop
System
AdaptersBrakes
What it does
- Individual cap adapter for most GM models 2013+.
Why it matters
- Easily fitting adapters
- Provides good seal for master cylinders
- Numbered for easy identification
- This cap fits most GM master cylinder reservoirs, 2013 and newer.
Frequently Asked Questions
Compatibility can vary by tool, vehicle, reservoir cap, and application. Review the product details first, then contact our team if you need help choosing the right setup.
Visit our How-To videos and support resources for setup guidance, bleeding methods, and product care.
Phoenix products are backed by warranty coverage and direct product support. Contact us with your order number and product details and our team will help.