![nairn-1500x1500](https://www.rhsboating.com.au/images/com_hikashop/upload/nairn-1500x1500.jpg)  Find Nairn inspection ports and selected replacement components for your boat. The catalogue features Australian-made nylon ports in different sizes, lid colours and configurations. For a replacement lid or seal, identify the existing port and compare the specified size carefully. Opening diameter and overall dimensions are different measurements and both may matter when planning a new installation. Explore the Nairn listings at RHS Boating & Marine for product details and available options.

           [ ![RWB4136](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 - Black - 150mm (6 inches)") ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-black-150mm-6-inches.html)

   $15.04  each    [ Nairn Inspection Port Replacement Lid - Black - 150mm (6 inches) ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-black-150mm-6-inches.html)      [ RWB4136 ](https://www.rhsboating.com.au/categories/nairn-inspection-port-replacement-lid-black-150mm-6-inches.html)

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   [ ![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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Display #21

- [](https://www.rhsboating.com.au/brands-listing/nairn-boat-inspection-ports-spare-parts.html?start=21&limit=21)
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- [1](https://www.rhsboating.com.au/brands-listing/nairn-boat-inspection-ports-spare-parts.html?start=21&limit=21 "1")
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- [3](https://www.rhsboating.com.au/brands-listing/nairn-boat-inspection-ports-spare-parts.html?start=21&limit=21 "3")
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