![cheras-1500x1500](https://www.rhsboating.com.au/images/com_hikashop/upload/cheras-1500x1500.jpg)  Maintain your boat's sacrificial anode system with Cheras marine zinc anodes. RWB lists Australian-made Cheras anodes in different shapes and sizes, including propeller shaft models. Choose replacements by the required material, shaft or mounting dimensions and application. Checking the existing anode specification helps you select the correct component for your vessel's corrosion-protection system. Explore the Cheras listings at RHS Boating & Marine for product details and available options.

           [ ![RWB4132](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/RWB4132.jpg "Nairn Inspection Port Replacement Lid - Clear - 100mm (4 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-100mm-4-inches.html)

   $12.30  each    [ Nairn Inspection Port Replacement Lid - Clear - 100mm (4 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-100mm-4-inches.html)      [ RWB4132 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-100mm-4-inches.html)

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   [ ![RWB4135](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/RWB4135.jpg "Nairn Inspection Port Replacement Lid - Clear - 125mm (5 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-125mm-5-inches.html)

   $14.76  each    [ Nairn Inspection Port Replacement Lid - Clear - 125mm (5 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-125mm-5-inches.html)      [ RWB4135 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-125mm-5-inches.html)

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   [ ![RWB4138](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/RWB4138.jpg "Nairn Inspection Port Replacement Lid - Clear - 150mm (6 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-150mm-6-inches.html)

   $17.44  each    [ Nairn Inspection Port Replacement Lid - Clear - 150mm (6 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-150mm-6-inches.html)      [ RWB4138 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-clear-150mm-6-inches.html)

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   [ ![RWB4131](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port Replacement Lid - White - 100mm (4 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-100mm-4-inches.html)

   $10.86  each    [ Nairn Inspection Port Replacement Lid - White - 100mm (4 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-100mm-4-inches.html)      [ RWB4131 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-100mm-4-inches.html)

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   [ ![RWB4134](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port Replacement Lid - White - 125mm (5 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-125mm-5-inches.html)

   $12.65  each    [ Nairn Inspection Port Replacement Lid - White - 125mm (5 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-125mm-5-inches.html)      [ RWB4134 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-125mm-5-inches.html)

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   [ ![RWB4137](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port Replacement Lid - White - 150mm (6 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-150mm-6-inches.html)

   $15.04  each    [ Nairn Inspection Port Replacement Lid - White - 150mm (6 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-150mm-6-inches.html)      [ RWB4137 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-white-150mm-6-inches.html)

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   [ ![RWB4108](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/RWB4108.jpg "Nairn Inspection Port with Kit Bag - All black - 125mm (5 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-black-125mm-5-inches-opening.html)

   $56.82  each    [ Nairn Inspection Port with Kit Bag - All black - 125mm (5 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-black-125mm-5-inches-opening.html)      [ RWB4108 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-black-125mm-5-inches-opening.html)

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   [ ![RWB4116](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/RWB4116.jpg "Nairn Inspection Port with Kit Bag - All black - 150mm (6 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-black-150mm-6-inches-opening.html)

   $62.55  each    [ Nairn Inspection Port with Kit Bag - All black - 150mm (6 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-black-150mm-6-inches-opening.html)      [ RWB4116 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-black-150mm-6-inches-opening.html)

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   [ ![RWB4109](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port with Kit Bag - All white - 125mm (5 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-white-125mm-5-inches-opening.html)

   $56.82  each    [ Nairn Inspection Port with Kit Bag - All white - 125mm (5 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-white-125mm-5-inches-opening.html)      [ RWB4109 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-white-125mm-5-inches-opening.html)

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   [ ![RWB4117](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port with Kit Bag - All white - 150mm (6 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-white-150mm-6-inches-opening.html)

   $62.55  each    [ Nairn Inspection Port with Kit Bag - All white - 150mm (6 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-white-150mm-6-inches-opening.html)      [ RWB4117 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-all-white-150mm-6-inches-opening.html)

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   [ ![RWB4110](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port with Kit Bag - Black with clear lid - 125mm (5 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-black-with-clear-lid-125mm-5-inches-opening.html)

   $60.24  each    [ Nairn Inspection Port with Kit Bag - Black with clear lid - 125mm (5 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-black-with-clear-lid-125mm-5-inches-opening.html)      [ RWB4110 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-black-with-clear-lid-125mm-5-inches-opening.html)

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   [ ![RWB4111](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port with Kit Bag - White with clear lid - 125mm (5 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-white-with-clear-lid-125mm-5-inches-opening.html)

   $60.15  each    [ Nairn Inspection Port with Kit Bag - White with clear lid - 125mm (5 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-white-with-clear-lid-125mm-5-inches-opening.html)      [ RWB4111 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-white-with-clear-lid-125mm-5-inches-opening.html)

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   [ ![RWB4119](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Inspection Port with Kit Bag - White with clear lid - 150mm (6 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-white-with-clear-lid-150mm-6-inches-opening.html)

   $67.10  each    [ Nairn Inspection Port with Kit Bag - White with clear lid - 150mm (6 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-white-with-clear-lid-150mm-6-inches-opening.html)      [ RWB4119 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-with-kit-bag-white-with-clear-lid-150mm-6-inches-opening.html)

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   [ ![400355](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/400355.jpg "Nairn Marine Drain Plug and Housing – Boat Plumbing Fittings") ](https://www.rhsboating.com.au/categories/nairn-marine-drain-plug-and-housing-boat-plumbing-fittings.html)

   $9.14  each    [ Nairn Marine Drain Plug and Housing – Boat Plumbing Fittings ](https://www.rhsboating.com.au/categories/nairn-marine-drain-plug-and-housing-boat-plumbing-fittings.html)      [ 400355 ](https://www.rhsboating.com.au/categories/nairn-marine-drain-plug-and-housing-boat-plumbing-fittings.html)

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   [ ![RWB4100](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Nylon Inspection Port - All black - 100mm (4 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-100mm-4-inches-opening.html)

   $17.83  each    [ Nairn Nylon Inspection Port - All black - 100mm (4 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-100mm-4-inches-opening.html)      [ RWB4100 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-100mm-4-inches-opening.html)

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   [ ![RWB4104](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Nylon Inspection Port - All black - 125mm (5 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-125mm-5-inches-opening.html)

   $21.37  each    [ Nairn Nylon Inspection Port - All black - 125mm (5 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-125mm-5-inches-opening.html)      [ RWB4104 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-125mm-5-inches-opening.html)

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   [ ![RWB4112](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Nylon Inspection Port - All black - 150mm (6 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-150mm-6-inches-opening.html)

   $25.06  each    [ Nairn Nylon Inspection Port - All black - 150mm (6 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-150mm-6-inches-opening.html)      [ RWB4112 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-black-150mm-6-inches-opening.html)

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   [ ![RWB4101](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Nylon Inspection Port - All white - 100mm (4 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-100mm-4-inches-opening.html)

   $17.83  each    [ Nairn Nylon Inspection Port - All white - 100mm (4 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-100mm-4-inches-opening.html)      [ RWB4101 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-100mm-4-inches-opening.html)

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   [ ![RWB4105](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Nylon Inspection Port - All white - 125mm (5 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-125mm-5-inches-opening.html)

   $21.37  each    [ Nairn Nylon Inspection Port - All white - 125mm (5 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-125mm-5-inches-opening.html)      [ RWB4105 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-125mm-5-inches-opening.html)

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   [ ![RWB4113](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Nairn Nylon Inspection Port - All white - 150mm (6 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-150mm-6-inches-opening.html)

   $25.06  each    [ Nairn Nylon Inspection Port - All white - 150mm (6 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-150mm-6-inches-opening.html)      [ RWB4113 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-all-white-150mm-6-inches-opening.html)

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   [ ![RWB4102](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/500x500/RWB4102.jpg "Nairn Nylon Inspection Port - Black with clear lid - 100mm (4 inches) Opening") ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-black-with-clear-lid-100mm-4-inches-opening.html)

   $20.11  each    [ Nairn Nylon Inspection Port - Black with clear lid - 100mm (4 inches) Opening ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-black-with-clear-lid-100mm-4-inches-opening.html)      [ RWB4102 ](https://www.rhsboating.com.au/categories/nairn-nylon-inspection-port-black-with-clear-lid-100mm-4-inches-opening.html)

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Display #21

- [](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21)
- [](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21)
- [184](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "184")
- [185](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "185")
- [186](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "186")
- [187](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "187")
- [188](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "188")
- 189
- [190](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "190")
- [191](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "191")
- [192](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "192")
- [193](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21 "193")
- [](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21)
- [](https://www.rhsboating.com.au/brands-listing/category/cheras-marine-zinc-anodes/view-category/layout-listing.html?start=3948&limit=21)

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