Shop with Confidence — Free Shipping on All Orders

{"id":9680962355351,"title":"TXN 8 Spark Plugs Set For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat","handle":"txn-8-spark-plugs-set-for-mercruiser-305-350-454-5-0l-5-7l-7-4l-boat","description":"\u003ch3\u003eTXN 8 Spark Plugs Set For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe Marine Spark Plug MR43T is designed for reliable ignition and consistent\nperformance in marine engines. Featuring a copper core and nickel alloy\nelectrode, it supports efficient combustion and effective heat dissipation.\nEngineered for marine applications, the MR43T helps provide smooth engine\noperation and dependable cold starts. Features \u0026amp; Benefits: Copper core\nsupports efficient heat transfer and consistent spark Nickel alloy electrode\ndesigned for durability and stable performance Pre-gapped for easy and precise\ninstallation Supports smooth idle and reliable cold-start performance in\nmarine engines Specifications: Brand \u0026amp; Part Number: MR43T Material: Copper\nCore with Nickel Alloy Electrode Thread Size: 14mm Reach: 0.75 in. (19mm) Gap:\nPre-gapped (~0.035 in.) Optimize marine engine performance with MR43T spark\nplugs.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eCopper core supports efficient heat transfer and consistent spark\u003c\/li\u003e\n \u003cli\u003eNickel alloy electrode designed for durability and stable performance\u003c\/li\u003e\n \u003cli\u003ePre-gapped for easy and precise installation\u003c\/li\u003e\n \u003cli\u003eSupports smooth idle and reliable cold-start performance in marine engines\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-07-30T19:05:13+10:00","created_at":"2026-07-26T20:20:45+10:00","vendor":"Texan Supply Co","type":"Spark Plugs","tags":["home_improvement_Aug2026"],"price":18700,"price_min":18700,"price_max":18700,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":48068170547351,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B0GBQVB5P3","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"TXN 8 Spark Plugs Set For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat","public_title":null,"options":["Default Title"],"price":18700,"weight":454,"compare_at_price":null,"inventory_management":"shopify","barcode":"B0GBQVB5P3","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/newnestshop.com\/cdn\/shop\/files\/B0GBQVB5P3.jpg?v=1785061248","\/\/newnestshop.com\/cdn\/shop\/files\/6111OKfKGmL.jpg?v=1785061247"],"featured_image":"\/\/newnestshop.com\/cdn\/shop\/files\/B0GBQVB5P3.jpg?v=1785061248","options":["Title"],"media":[{"alt":null,"id":42456338530455,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2050,"width":2050,"src":"\/\/newnestshop.com\/cdn\/shop\/files\/B0GBQVB5P3.jpg?v=1785061248"},"aspect_ratio":1.0,"height":2050,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/files\/B0GBQVB5P3.jpg?v=1785061248","width":2050},{"alt":null,"id":42456338563223,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1536,"width":1536,"src":"\/\/newnestshop.com\/cdn\/shop\/files\/6111OKfKGmL.jpg?v=1785061247"},"aspect_ratio":1.0,"height":1536,"media_type":"image","src":"\/\/newnestshop.com\/cdn\/shop\/files\/6111OKfKGmL.jpg?v=1785061247","width":1536}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eTXN 8 Spark Plugs Set For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe Marine Spark Plug MR43T is designed for reliable ignition and consistent\nperformance in marine engines. Featuring a copper core and nickel alloy\nelectrode, it supports efficient combustion and effective heat dissipation.\nEngineered for marine applications, the MR43T helps provide smooth engine\noperation and dependable cold starts. Features \u0026amp; Benefits: Copper core\nsupports efficient heat transfer and consistent spark Nickel alloy electrode\ndesigned for durability and stable performance Pre-gapped for easy and precise\ninstallation Supports smooth idle and reliable cold-start performance in\nmarine engines Specifications: Brand \u0026amp; Part Number: MR43T Material: Copper\nCore with Nickel Alloy Electrode Thread Size: 14mm Reach: 0.75 in. (19mm) Gap:\nPre-gapped (~0.035 in.) Optimize marine engine performance with MR43T spark\nplugs.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eCopper core supports efficient heat transfer and consistent spark\u003c\/li\u003e\n \u003cli\u003eNickel alloy electrode designed for durability and stable performance\u003c\/li\u003e\n \u003cli\u003ePre-gapped for easy and precise installation\u003c\/li\u003e\n \u003cli\u003eSupports smooth idle and reliable cold-start performance in marine engines\u003c\/li\u003e\n \u003c\/ul\u003e"}

TXN 8 Spark Plugs Set For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat

In Stock. Leaves warehouse within 2 - 3 business days

$187.00 AUD
Maximum quantity available reached.
Free Shipping Australia Wide
100% Safe & Secure Checkout
100 Days Return Policy *
1 Year Warranty *

TXN 8 Spark Plugs Set For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat

The Marine Spark Plug MR43T is designed for reliable ignition and consistent performance in marine engines. Featuring a copper core and nickel alloy electrode, it supports efficient combustion and effective heat dissipation. Engineered for marine applications, the MR43T helps provide smooth engine operation and dependable cold starts. Features & Benefits: Copper core supports efficient heat transfer and consistent spark Nickel alloy electrode designed for durability and stable performance Pre-gapped for easy and precise installation Supports smooth idle and reliable cold-start performance in marine engines Specifications: Brand & Part Number: MR43T Material: Copper Core with Nickel Alloy Electrode Thread Size: 14mm Reach: 0.75 in. (19mm) Gap: Pre-gapped (~0.035 in.) Optimize marine engine performance with MR43T spark plugs.

Product Features

  • Copper core supports efficient heat transfer and consistent spark
  • Nickel alloy electrode designed for durability and stable performance
  • Pre-gapped for easy and precise installation
  • Supports smooth idle and reliable cold-start performance in marine engines

Buy with confidence as this product comes with 18 months full local warranty in Australia & New Zealand (unless otherwise stated in the overview).

This product also comes with the benefits of the CocoonPower Warranty. For further details please read our Warranty Guidelines.

You can also purchase 3 Year Extended Care. If you are interested please see our Extended Care Information.