URHB32E

This spark plug incorporates a high conductivity copper core center electrode co-extruded inside a nickel alloy sleeve that provides strong heat and electrical conductivity while resisting corrosive combustion gases.
A high alumina ceramic insulator with proprietary protective glaze provides mechanical strength, dielectric performance, and stability in severe operating conditions.
A Clean Collar massive electrode V-tip geometry concentrates heat at the firing end to reduce fouling and control heat range.
A fired-in glass center seal integrates the resistor into the insulator structure to maintain stable resistance and reliable energy transfer.
Nickel-plated external surfaces create a durable finish with corrosion and wear resistance.
Nickel ground electrodes are configured to minimize sparking voltage while maintaining specification gaps for stable ignition.
The center electrode and insulator interface is sealed by a vacuum infusion process that promotes heat flow and center electrode cooling.
A Hot-Lock assembly process shrinks the insulator into the shell with pressure and heat to create a zero-leakage seal against combustion gases.
The harness contact uses an oxide-treated spring surface that is chemically bonded to the resistor element to ensure secure termination and electrical continuity.
The plug is supplied as a single unit for installation in compatible aircraft engines and is manufactured in the United States.
The unit weight is 0.29 pounds and the body dimensions are 5.25 inches in length, 1.75 inches in width, and 1.079 inches in height.
The plug is associated with installations in selected Beechcraft, Cessna, Cirrus, and Mooney aircraft models that use compatible engines.
The design is categorized under massive electrode aviation spark plugs.

• Massive electrode V-tip configuration
• High conductivity copper core center electrode inside a nickel alloy sleeve
• High alumina ceramic insulator with protective glaze
• Glass center seal with fired-in resistor element
• Nickel plated finish on external surfaces
• Nickel ground electrodes configured for controlled sparking voltage
• Vacuum infused center electrode to insulator seal
• Hot-Lock insulator-to-shell assembly for leak resistance
• Oxide-treated harness contact spring bonded to the resistor
• Manufactured in the United States

Part number: URHB32E
Electrode design: massive electrode V-tip
Center electrode material: copper core with nickel alloy sleeve
Insulator material: high alumina ceramic
External finish: nickel
Ground electrode material: nickel
Assembly features: glass center seal, vacuum infused center electrode seal, Hot-Lock insulator-to-shell joint
Nominal weight: 0.29 lb
Overall dimensions: 5.25 in length × 1.75 in width × 1.079 in height
Country of origin: United States
Associated aircraft makes: Beechcraft, Cessna, Cirrus, Mooney
Associated aircraft models: 175, 180, 182, 185, 188, 205, 206, 207, 210, 310, 33, 36, 55, 58, M20, SR-22
Categories: aircraft engine spark plug, massive electrode aviation spark plug