Tecnoseal Cummins Zinc Pencil Anodes with Brass Plugs for Marine Engine Heat Exchangers

Tecnoseal Cummins Zinc Pencil Anodes with Brass Plugs for Marine Engine Heat Exchangers

Tecnoseal Cummins zinc pencil anodes with brass plugs are complete sacrificial anode assemblies designed for marine engine heat exchangers and cooling systems. Each assembly combines a cylindrical zinc rod with a brass mounting plug, helping protect internal metallic components against galvanic corrosion in cooling-water circuits.

The range includes four models with zinc rod diameters from 12 to 16 mm and lengths of 30 or 50 mm. The brass mounting plugs are available with 1/2" BSPT, 3/8" BSPT and 3/8" NPT external connections. Their head dimensions range from 11 to 22 mm, allowing selection according to the existing engine cooling system fitting.

The 02043T and 02044T models both have 50 mm long zinc rods and 1/2" BSPT brass plugs, but differ in rod diameter. The 02045-1T has a shorter 30 mm zinc rod and a 3/8" NPT connection, while the 02045T uses a 50 mm rod and a 3/8" BSPT plug. The complete assemblies weigh between 0.05 and 0.12 kg.

Key Features

• Manufacturer: Tecnoseal
• Compatible Brand: Cummins
• Product Type: Pencil sacrificial anode with brass plug
• Anode Material: Zinc
• Plug Material: Brass
• Configuration: Complete with Brass Plug
• Available Models: 02043T, 02044T, 02045-1T, 02045T
• Zinc Rod Diameters: 12–16 mm
• Zinc Rod Lengths: 30–50 mm
• External Connections: 1/2" BSPT, 3/8" BSPT and 3/8" NPT
• Plug Types: 1T and 2T
• Weight Range: 0.05–0.12 kg

Available Models and Technical Specifications

Individual Model Specifications

Tecnoseal 02043T – Cummins Zinc Pencil Anode Ø16 x 50 mm with Brass Plug 1/2" BSPT

The Tecnoseal 02043T combines a zinc pencil anode measuring 16 mm in diameter and 50 mm in length with a brass mounting plug. The plug features a 1/2" BSPT tapered external thread and a 22 mm head dimension. Weighing 0.12 kg (0.26 lbs), the complete assembly corresponds to original part number 006824100 and is designed for compatible Cummins marine cooling system installations.

• Product Code: 02043T
• Original Part Number: 006824100
• Material: Zinc + Brass
• Zinc Rod Diameter (Ø): 16 mm (0.63 in)
• Zinc Rod Length (l): 50 mm (1.97 in)
• External Plug Thread (a): 1/2" BSPT (Gas Conico)
• Plug Head Dimension (c): 22 mm (0.87 in)
• Weight: 0.12 kg (0.26 lbs)
• Plug Type: 2T
• EAN: 8052744980119

Tecnoseal 02044T – Cummins Zinc Pencil Anode Ø15.5 x 50 mm with Brass Plug 1/2" BSPT

The Tecnoseal 02044T features a cylindrical zinc rod measuring 15.50 mm in diameter and 50 mm in length, supplied complete with a brass mounting plug. Its 1/2" BSPT tapered external thread and 22 mm head dimension provide the specified mounting configuration. The assembly weighs 0.12 kg (0.26 lbs), making it a replacement option for compatible Cummins engine heat exchanger installations.

• Product Code: 02044T
• Material: Zinc + Brass
• Zinc Rod Diameter (Ø): 15.50 mm (0.61 in)
• Zinc Rod Length (l): 50 mm (1.97 in)
• External Plug Thread (a): 1/2" BSPT (Gas Conico)
• Plug Head Dimension (c): 22 mm (0.87 in)
• Weight: 0.12 kg (0.26 lbs)
• Plug Type: 2T
• EAN: 8052744980126

Tecnoseal 02045-1T – Cummins Zinc Pencil Anode Ø12 x 30 mm with Brass Plug 3/8" NPT

The Tecnoseal 02045-1T is a compact zinc pencil anode assembly with a 12 mm diameter rod measuring 30 mm in length. The brass plug features a 3/8" NPT tapered external thread and an 11 mm head dimension. Weighing 0.05 kg (0.11 lbs), this configuration corresponds to original part number 3957921 and is intended for compatible Cummins marine engine cooling systems.

• Product Code: 02045-1T
• Original Part Number: 3957921
• Material: Zinc + Brass
• Zinc Rod Diameter (Ø): 12 mm (0.47 in)
• Zinc Rod Length (l): 30 mm (1.18 in)
• External Plug Thread (a): 3/8" NPT
• Plug Head Dimension (c): 11 mm (0.43 in)
• Weight: 0.05 kg (0.11 lbs)
• Plug Type: 1T
• EAN: 8058774838741

Tecnoseal 02045T – Cummins Zinc Pencil Anode Ø12.5 x 50 mm with Brass Plug 3/8" BSPT

The Tecnoseal 02045T combines a 12.50 mm diameter zinc pencil anode measuring 50 mm in length with a brass mounting plug featuring a 3/8" BSPT tapered external thread. Its 19 mm head dimension and complete assembly weight of 0.08 kg (0.18 lbs) distinguish this model from the shorter 02045-1T version. The assembly is designed for corrosion protection in compatible Cummins marine engine cooling systems.

• Product Code: 02045T
• Material: Zinc + Brass
• Zinc Rod Diameter (Ø): 12.50 mm (0.49 in)
• Zinc Rod Length (l): 50 mm (1.97 in)
• External Plug Thread (a): 3/8" BSPT (Gas Conico)
• Plug Head Dimension (c): 19 mm (0.75 in)
• Weight: 0.08 kg (0.18 lbs)
• Plug Type: 2T
• EAN: 8052744984117

Original Part Numbers

Application and Compatibility

• Cummins marine engine heat exchangers
• Compatible Cummins marine cooling-water systems
• Replacement of complete sacrificial zinc anode and brass mounting plug assemblies

Model Selection

Select the correct Tecnoseal Cummins pencil anode assembly by matching the zinc rod diameter, rod length, original part number and external brass plug thread. The 02043T and 02044T models share the same 1/2" BSPT connection and 50 mm rod length but have different rod diameters of 16 and 15.50 mm.

The 02045-1T and 02045T models have different rod dimensions and mounting threads. The 02045-1T uses a 3/8" NPT external connection, while the 02045T features a 3/8" BSPT connection. These tapered thread standards should not be treated as interchangeable solely because their nominal sizes match.

Check the existing assembly dimensions and mounting thread before ordering. All four models are supplied complete with a zinc sacrificial anode and brass plug.