Overview — Connector 6C Heater B3837066
B3837066 is the connector for the 6C heater circuit on CUMMINS engines, providing the threaded connection between the heater and the coolant or electrical circuit at the 3/4-inch by 16mm interface. We can supply this connector as well as related CUMMINS heater components, in stock or available on order — welcome to enquire by part number.
Parts Characteristics
The connector is machined to the original thread and bore specification, with the 3/4-inch and 16mm threads cut to gauge. The material resists coolant and corrosion, and the sealing surface accepts the original O-ring or gasket. The bore is clear for the coolant or element fit, and the hex or fitting profile accepts the standard service wrench. As an OEM-spec connector, it restores the original heater circuit joint.
Applicable Models & Applications
This connector is used on CUMMINS 6C engine heater installations where the specified thread interface is required, including generator sets, industrial engines and construction equipment fitted with coolant heaters. Confirm the thread sizes and the heater model against the connector removed from your engine before ordering.
Maintenance & Replacement
Check the connector for corrosion, damaged threads and coolant seepage at each heater service. When replacing, clean the threads of both the connector and the heater, fit a new sealing ring, and tighten to the specified torque. Bleed the coolant circuit after installation and check for leaks with the system under pressure. Confirm the electrical connection is clean and dry if the connector also carries the element supply.
Price Reference (USD)
The reference price for this Connector (B3837066) is approximately USD 8 – 35 per unit depending on size, quantity and shipping destination. This is a planning estimate only — confirm current pricing and availability with our sales team before ordering.
Value & Service
A mismatched connector can leak coolant or fail electrically, so we verify B3837066 against the original CUMMINS thread and bore specification before dispatch. We stock the connector and can supply the matching heater and sealing parts, with orders consolidated into one tracked shipment. Our team can confirm the correct connector for your heater model.
Racer Machinery is a dedicated construction-machinery parts supplier — send us your part number and engine model, and we will confirm fitment, price and lead time for this connector and related CUMMINS heater components.
