A/C & Heat Bulkhead Push-On 4 Port

The A/C & Heat Bulkhead Push-On 4 Port from BILLET SPECIALTIES is a precision aluminum manifold designed for custom automotive climate control systems. This polished bulkhead plate serves as a central junction point for air conditioning and heating circuits, allowing technicians and builders to consolidate multiple refrigerant and coolant lines into a single, organized assembly. Whether you're fabricating a high-performance engine bay or restoring a classic vehicle with modern climate control, this component simplifies plumbing complexity and improves system reliability.

Constructed from lightweight aluminum with a professional polished finish, the A/C & Heat Bulkhead Push-On 4 Port features mixed port configurations to accommodate various hose and fitting sizes. The manifold includes two 10 AN male ports paired with 5/8-inch hose barb connections, one dedicated 10 AN male port, and one 6 AN male port, giving builders flexibility in routing and adapting existing or custom refrigerant and heating lines. This multi-port design reduces the number of separate adapters and joints required, lowering potential leak points and improving system integrity. The push-on barb connections provide secure, slip-fit attachment without requiring additional clamps or tools, streamlining installation while maintaining firm engagement under system pressure.

Professionals building custom hot rods, restomod classics, or specialized race vehicles benefit most from this bulkhead solution, as it eliminates bulky external manifolds and frees up valuable engine compartment space. The compact 5.3 x 2.7 x 9.1-inch footprint and minimal 0.57-pound weight make it ideal for weight-conscious applications without sacrificing structural integrity or flow capacity. Installation typically involves mounting the plate to an accessible location on the firewall or chassis, then routing AN lines and barbed hose connections to the compressor, condenser, heater core, and receiver-drier. This product is compatible with any AN-equipped A/C or heating system, making it a universal choice for custom fabrication projects.