{"product_id":"tecnoseal-mercury-mercruiser-alpha-one-generation-i-anode-engine-kit","title":"Tecnoseal Mercury \/ Mercruiser Alpha One Generation I Anode Engine Kit","description":"\u003cp\u003e\u003cstrong\u003eTecnoseal Alpha One Generation I sterndrive anode kits\u003c\/strong\u003e are complete four-piece replacement sets for compatible Mercury\/MerCruiser MR and Alpha One Gen I drives. Zinc, aluminium and magnesium options are available, with every kit containing matched alloy-specific anodes for the gimbal housing or driveshaft plate, trim tab and two gimbal nuts. Fixing hardware is included.\u003c\/p\u003e\n\n\u003ch4\u003eWhich Drive Is This Kit For?\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfirmed serial-number application:\u003c\/strong\u003e Mercury\/MerCruiser MR and Alpha One Generation I sterndrives with serial numbers from \u003cstrong\u003e6225577 to 0D469828\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eMercury currently describes this serial range as 1984–1990 on some product pages and 1984–1991 on others. The serial number and physical anode arrangement should therefore be treated as the primary compatibility checks.\u003c\/p\u003e\n\n\u003cp\u003eThis kit is not suitable for Alpha One Generation II drives. Gen II drives normally begin at serial number \u003cstrong\u003e0D469829\u003c\/strong\u003e and use the different Tecnoseal KITALPHAONE configuration.\u003c\/p\u003e\n\n\u003ch4\u003eWhat Is Included?\u003c\/h4\u003e\n\n\u003cp\u003eEvery alloy option contains four sacrificial-anode pieces manufactured from the selected material:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 × gimbal-housing\/driveshaft-plate anode:\u003c\/strong\u003e 00806BIS zinc, 00806BISAL aluminium or 00806BISMG magnesium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 × trim-tab fin anode:\u003c\/strong\u003e 00800 zinc, 00800AL aluminium or 00800MG magnesium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2 × gimbal nut anodes:\u003c\/strong\u003e 00807 zinc, 00807AL aluminium or 00807MG magnesium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFixing hardware:\u003c\/strong\u003e Included with every kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAll components supplied in a selected kit are manufactured from the same alloy. The kit does not contain a mixture of zinc, aluminium and magnesium anodes.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Tecnoseal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct category:\u003c\/strong\u003e Sterndrive sacrificial-anode kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer kit numbers:\u003c\/strong\u003e KITALPHAONEGEN1, KITALPHAONEGEN1AL and KITALPHAONEGEN1MG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive compatibility:\u003c\/strong\u003e Mercury\/MerCruiser MR and Alpha One Generation I\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfirmed serial range:\u003c\/strong\u003e 6225577–0D469828\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel-year guide:\u003c\/strong\u003e Commonly catalogued as 1984–1990; some current Mercury listings state 1984–1991 for the same serial range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of sacrificial-anode pieces:\u003c\/strong\u003e Four\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable alloys:\u003c\/strong\u003e Zinc, aluminium and magnesium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFixing hardware:\u003c\/strong\u003e Included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Multi-position cathodic protection for the sterndrive assembly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoat type:\u003c\/strong\u003e Motorboats fitted with a compatible MR or Alpha One Gen I sterndrive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacture:\u003c\/strong\u003e Made in Italy by Tecnoseal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhich Anode Alloy Should I Choose?\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZinc:\u003c\/strong\u003e A conventional selection for salt-water operation where zinc is specified by the vessel or drive manufacturer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminium:\u003c\/strong\u003e A lower-mass option suitable for fresh or salt water according to Mercury's current MR and Alpha One aluminium-kit guidance. It is also commonly selected for brackish-water use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnesium:\u003c\/strong\u003e Intended for fresh-water operation only. Magnesium is normally unsuitable for prolonged salt-water use because it can be consumed too quickly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUse the alloy specified by Mercury, the vessel manufacturer or the existing cathodic-protection design. Keep all replacement anodes on the sterndrive consistent unless a qualified marine-corrosion specialist specifies otherwise.\u003c\/p\u003e\n\n\u003cp\u003eWater salinity, connected metals, shore-power arrangements, bonding condition and stray-current activity can affect the correct alloy selection.\u003c\/p\u003e\n\n\u003ch4\u003eHow Do I Confirm Compatibility?\u003c\/h4\u003e\n\n\u003cp\u003eBefore ordering, check:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe drive is a Mercury\/MerCruiser \u003cstrong\u003eMR or Alpha One Generation I\u003c\/strong\u003e, not Alpha One Gen II.\u003c\/li\u003e\n  \u003cli\u003eThe serial number is within \u003cstrong\u003e6225577–0D469828\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eThe existing installation uses one trim-tab anode, one gimbal-housing or driveshaft-plate anode and two gimbal nut anodes.\u003c\/li\u003e\n  \u003cli\u003eThe selected alloy is appropriate for the operating water and existing cathodic-protection system.\u003c\/li\u003e\n  \u003cli\u003eThe drive has not been modified with non-standard housings, trim components or anode positions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDo not select the kit solely from the boat manufacturer, engine horsepower, approximate model year or the words “Alpha One”.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation and Maintenance\u003c\/h4\u003e\n\n\u003cp\u003eRemove the existing anodes and clean each anode seat, fixing point and required electrical-contact surface. Paint, corrosion deposits, grease and sealant can interrupt the direct metal-to-metal contact required for sacrificial protection.\u003c\/p\u003e\n\n\u003cp\u003eFit all four anode pieces using the supplied hardware and the Mercury\/MerCruiser installation and tightening procedure. Confirm that each anode is secure and electrically connected to the drive component it protects.\u003c\/p\u003e\n\n\u003cp\u003eDo not paint the sacrificial anodes or their contact surfaces. Inspect them during scheduled servicing and replace them when substantially consumed, damaged, loose or heavily pitted. Unusually rapid, uneven or localised consumption can indicate incorrect alloy selection, poor electrical continuity, bonding faults or stray-current activity.\u003c\/p\u003e\n\n\u003ch4\u003eAlloy Standards and Manufacture\u003c\/h4\u003e\n\n\u003cp\u003eTecnoseal manufactures zinc, aluminium and magnesium sacrificial anodes at its foundry in Grosseto, Tuscany. Alloy composition is checked using spectrometric measurements against the applicable material specification:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZinc alloy:\u003c\/strong\u003e US Mil Spec A-18001K\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminium alloy:\u003c\/strong\u003e US Mil Spec A24779 SH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnesium alloy:\u003c\/strong\u003e US Mil Spec A21412 SH\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eTecnoseal states that its catalogue anodes are manufactured in Italy and checked for compliance with the applicable alloy specifications.\u003c\/p\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIs fixing hardware included?\u003c\/strong\u003e Yes. Tecnoseal lists fixing hardware as included with all three alloy variants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHow many anodes are included?\u003c\/strong\u003e Four pieces: one gimbal-housing or driveshaft-plate anode, one trim-tab anode and two gimbal nut anodes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWill this fit an Alpha One Generation II drive?\u003c\/strong\u003e No. Alpha One Gen II uses a different six-piece kit configuration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhy do some listings say 1984–1990 and others say 1984–1991?\u003c\/strong\u003e Mercury currently uses both date ranges for products covering serial 6225577–0D469828. Check the serial number rather than relying on model year alone.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAre all components made from the selected alloy?\u003c\/strong\u003e Yes. Selecting zinc, aluminium or magnesium provides a complete matched kit in that alloy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan different anode alloys be mixed on the drive?\u003c\/strong\u003e Use a consistent alloy strategy unless the drive manufacturer or a qualified marine-corrosion specialist specifies otherwise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes this kit include every anode required for the boat?\u003c\/strong\u003e No. It covers the stated sterndrive configuration. Separate hull, shaft, propeller or other equipment anodes may still be required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan the new anodes be painted?\u003c\/strong\u003e No. Keep all sacrificial surfaces and required electrical-contact faces free from paint, grease and sealant.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhy do the kit weights differ?\u003c\/strong\u003e Zinc, aluminium and magnesium have different densities, so equivalent anode shapes have different weights.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\n\u003cdiv style=\"width: 100%; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch;\"\u003e\n  \u003ctable class=\"spec-table\" style=\"width: 100%; min-width: 1150px; border-collapse: collapse; font-family: Roboto, Arial, sans-serif; background: #ffffff; text-align: center; white-space: nowrap;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background: #f5f5f5;\"\u003e\n        \u003cth rowspan=\"2\" style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eSpecification\u003c\/th\u003e\n        \u003cth colspan=\"1\" style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eZinc Variant\u003c\/th\u003e\n        \u003cth colspan=\"1\" style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eAluminium Variant\u003c\/th\u003e\n        \u003cth colspan=\"1\" style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eMagnesium Variant\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f5f5f5;\"\u003e\n        \u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eKITALPHAONEGEN1\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eKITALPHAONEGEN1AL\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eKITALPHAONEGEN1MG\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eManufacturer part number\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eKITALPHAONEGEN1\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eKITALPHAONEGEN1AL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eKITALPHAONEGEN1MG\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eGTIN\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e8059617814502\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e8059617814519\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e8059617814526\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eAnode alloy\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eZinc\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eAluminium\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eMagnesium\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eTypical water-selection guide\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eSalt water where specified\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eFresh, salt or brackish water where specified\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eFresh water only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eDrive family\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eMercury\/MerCruiser MR \u0026amp; Alpha One Generation I\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eMercury\/MerCruiser MR \u0026amp; Alpha One Generation I\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eMercury\/MerCruiser MR \u0026amp; Alpha One Generation I\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eConfirmed serial-number range\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e6225577–0D469828\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e6225577–0D469828\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e6225577–0D469828\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eModel-year guide\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1984–1990; some Mercury listings state 1984–1991\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1984–1990; some Mercury listings state 1984–1991\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1984–1990; some Mercury listings state 1984–1991\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eNumber of sacrificial-anode pieces\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e4 pieces\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e4 pieces\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e4 pieces\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eFixing hardware\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eIncluded\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eIncluded\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eIncluded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eApprox. kit weight\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1.691kg \/ 3.73lb\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e0.760kg \/ 1.68lb\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e0.580kg \/ 1.28lb\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eGimbal-housing\/driveshaft-plate anode\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1 × 00806BIS\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1 × 00806BISAL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1 × 00806BISMG\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eTrim-tab fin anode\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1 × 00800\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1 × 00800AL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e1 × 00800MG\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eGimbal nut anodes\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e2 × 00807\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e2 × 00807AL\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003e2 × 00807MG\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eAlloy specification\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eUS Mil Spec A-18001K\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eUS Mil Spec A24779 SH\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\"\u003eUS Mil Spec A21412 SH\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Tecnoseal","offers":[{"title":"Zinc","offer_id":64570885407097,"sku":"TS-KITALPHAONEGEN1","price":38.98,"currency_code":"GBP","in_stock":true},{"title":"Aluminium","offer_id":64570885439865,"sku":"TS-KITALPHAONEGEN1AL","price":24.98,"currency_code":"GBP","in_stock":true},{"title":"Magnesium","offer_id":64570885472633,"sku":"TS-KITALPHAONEGEN1MG","price":28.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/6151\/2725\/files\/0016852_kitalphaonegen1.png?v=1789393563","url":"https:\/\/marinescene.co.uk\/products\/tecnoseal-mercury-mercruiser-alpha-one-generation-i-anode-engine-kit","provider":"Marine Scene","version":"1.0","type":"link"}