{"product_id":"mercury-47397a1-forward-gear-shim-assembly","title":"Mercury 47397A1 Forward Gear Shim Set 15-47397A1","description":"\u003ch2\u003eMercury 47397A1 Forward Gear Shim Set 15-47397A1\u003c\/h2\u003e\n\n\u003cp\u003eThe Mercury 47397A1 Forward Gear Shim Set is used for bearing outer race adjustment in compatible Mercury, Mariner, and MerCruiser gear housing applications. Also referenced as 15-47397A1, this shim set is designed for forward gear setup during gearcase service, lower unit repair, and stern drive gear housing maintenance where this exact part number is specified.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine Mercury forward gear shim set\u003c\/li\u003e\n  \u003cli\u003ePart number: 47397A1\u003c\/li\u003e\n  \u003cli\u003eMercury part reference: 15-47397A1\u003c\/li\u003e\n  \u003cli\u003eProduct type: Forward gear bearing outer race shim set\u003c\/li\u003e\n  \u003cli\u003eUsed for forward gear bearing outer race adjustment\u003c\/li\u003e\n  \u003cli\u003eShim sizes include .002, .003, .005, and .010\u003c\/li\u003e\n  \u003cli\u003eFits select Mercury and Mariner outboard gear housing applications\u003c\/li\u003e\n  \u003cli\u003eFits select MerCruiser Alpha, MR, SS, and Alpha One Gen II stern drive applications\u003c\/li\u003e\n  \u003cli\u003eSupports proper gear setup during service, repair, or rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment \/ Product Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 47397A1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury Part Reference:\u003c\/strong\u003e 15-47397A1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Shim set \/ bearing outer race shim set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Forward gear bearing outer race shim adjustment for compatible outboard and stern drive gear housings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngine Types:\u003c\/strong\u003e Select Mercury and Mariner 2-stroke, carbureted, EFI, DFI, Pro Max, Pro XS, Sport XS, XRI, XR2, XR6, Magnum III, Jet, and MerCruiser stern drive applications where specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHP Range:\u003c\/strong\u003e Select 105 Jet through 300HP outboard applications, plus compatible MerCruiser stern drive applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAssembly Location:\u003c\/strong\u003e Forward gear \/ bearing outer race \/ gear housing assembly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShim Sizes:\u003c\/strong\u003e .002, .003, .005, and .010\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 35931A1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Match part number 47397A1 or 15-47397A1 to your gear housing parts diagram, outboard model, drive model, serial number, and service manual before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpanded Outboard Fitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury \/ Mariner 105 Jet:\u003c\/strong\u003e Select gear housing applications where 15-47397A1 is specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury \/ Mariner 140 Jet:\u003c\/strong\u003e Select gear housing applications where 15-47397A1 is specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury \/ Mariner 135HP:\u003c\/strong\u003e Select V6 2-stroke gear housing applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury \/ Mariner 150HP:\u003c\/strong\u003e Select 2.4L and 2.5L carbureted, EFI, XR2, XR6, and Magnum III applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury \/ Mariner 175HP:\u003c\/strong\u003e Select 2.4L and 2.5L carbureted, EFI, XRI, Magnum, and Pro XS applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury \/ Mariner 200HP:\u003c\/strong\u003e Select 2.4L, 2.5L, EFI, XRI, Pro Max, Super Magnum, DFI, and Pro XS applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury 225HP:\u003c\/strong\u003e Select 3.0L EFI, DFI, Pro Max, 225X, 225XS, and Sport XS applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury 250HP:\u003c\/strong\u003e Select 3.0L EFI, DFI, Pro XS, 250XS, Sport XS, and related performance applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury 300HP:\u003c\/strong\u003e Select 3.0L EFI, 300X, 300XS, and Pro Max applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGearcase Applications:\u003c\/strong\u003e Select standard rotation and performance gear housing applications where 47397A1 is specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpanded Sterndrive Fitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser IA \/ IB \/ IC \u0026amp; EZ Shift:\u003c\/strong\u003e 1964-1966, serial range 1684188 through 2065186\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser 120 \/ 140:\u003c\/strong\u003e 1967, serial range 2062141 through 2187468\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser MR \/ Alpha One:\u003c\/strong\u003e 1984-1990, serial range 6225577 and up\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser MR \/ Alpha One Counter Rotation:\u003c\/strong\u003e 1983-1990, serial range 6225577 and up\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser Alpha One SS:\u003c\/strong\u003e 1986-1989, serial range 0A545004 and up\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser Alpha One Gen II:\u003c\/strong\u003e 1991-1995, serial range 0D469859 through 0F679999\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMerCruiser Alpha One Gen II Counter Rotation:\u003c\/strong\u003e 1991-1995, serial range 0D469859 through 0F679999\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy You Should Buy\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrect shim set for applications requiring Mercury 47397A1 or 15-47397A1\u003c\/li\u003e\n  \u003cli\u003eDesigned for forward gear bearing outer race adjustment\u003c\/li\u003e\n  \u003cli\u003eUseful for gear housing service, lower unit repair, and forward gear setup\u003c\/li\u003e\n  \u003cli\u003eFits select Mercury outboard and MerCruiser stern drive applications\u003c\/li\u003e\n  \u003cli\u003eHelps support accurate gear setup when installed according to service specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMercury and Mariner outboard gear housing service\u003c\/li\u003e\n  \u003cli\u003eForward gear bearing outer race adjustment\u003c\/li\u003e\n  \u003cli\u003eLower unit repair and rebuilds\u003c\/li\u003e\n  \u003cli\u003eMercury 105 Jet through 300HP outboard applications where specified\u003c\/li\u003e\n  \u003cli\u003eMercury Pro Max, Pro XS, XRI, XR2, XR6, Magnum III, and performance gearcase applications where specified\u003c\/li\u003e\n  \u003cli\u003eMerCruiser MR \/ Alpha One gear housing service\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Alpha One SS gear housing service\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Alpha One Gen II and Gen II counter rotation gear housing service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat is Mercury 47397A1?\u003c\/strong\u003e Mercury 47397A1 is a forward gear bearing outer race shim set used in compatible Mercury, Mariner, and MerCruiser gear housing applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIs 15-47397A1 the same part?\u003c\/strong\u003e Yes. 15-47397A1 is the Mercury part reference for this shim set.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat does this shim set adjust?\u003c\/strong\u003e This shim set is used to adjust the forward gear bearing outer race in compatible gear housing assemblies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat shim sizes are included?\u003c\/strong\u003e The shim set includes .002, .003, .005, and .010 shim sizes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat horsepower range does this fit?\u003c\/strong\u003e This shim set fits select Mercury and Mariner 105 Jet through 300HP outboard applications where 47397A1 is specified.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat engine types does this fit?\u003c\/strong\u003e This part fits select 2-stroke, carbureted, EFI, DFI, Pro Max, Pro XS, Sport XS, XRI, XR2, XR6, Magnum III, Jet, and related Mercury \/ Mariner gear housing applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes this fit MerCruiser Alpha One Gen II?\u003c\/strong\u003e Yes. This shim set fits select Alpha One Gen II and Alpha One Gen II counter rotation applications from 1991-1995 with serial range 0D469859 through 0F679999.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat part number does this supersede?\u003c\/strong\u003e Mercury 47397A1 supersedes 35931A1.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHow should I confirm fitment?\u003c\/strong\u003e Match part number 47397A1 or 15-47397A1 to your gear housing parts diagram, outboard model, drive model, serial number, and service manual before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":48417123369192,"sku":"47397A1","price":14.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9927\/6776\/files\/47397A1.webp?v=1778104831","url":"https:\/\/wakeboss.com\/products\/mercury-47397a1-forward-gear-shim-assembly","provider":"Wakeboss","version":"1.0","type":"link"}