{"product_id":"arp-4age-main-stud-kit-ae86-aw11","title":"ARP 8740 Chromoly Main Stud Kit | 4A-GE (AE86\/AW11)","description":"\u003ch2\u003e\u003cspan\u003eARP 8740 Chromoly 4A-GE Main Stud Kit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFor Toyota 4A-GE DOHC 16V Engines – AE86 Corolla \u0026amp; AW11 MR2\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eOverview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe ARP Main Stud Kit is a high-strength bottom-end fastener upgrade for Toyota 1.6L 4A-GE DOHC 16-valve engines. It replaces the factory main-cap bolts with precision-manufactured studs designed to provide more consistent main-bearing-cap clamping during engine assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMain studs are particularly useful in performance, high-RPM, and rebuilt 4A-GE engines where maintaining accurate crankshaft main-cap alignment is important. Unlike a conventional bolt that rotates into the block while being tightened, a stud remains stationary while the nut is torqued, helping provide more consistent fastener loading.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe studs are manufactured from heat-treated 8740 chromoly steel with a black oxide finish and a tensile-strength rating of approximately 190,000 psi. Hardened washers and high-strength hex nuts are included to complete the main-cap fastening system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for Toyota 1.6L 4A-GE DOHC 16V engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePerformance replacement for factory main-cap bolts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e8740 chromoly steel construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApproximately 190,000 psi tensile-strength rating\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeat-treated fastener construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision thread-rolled stud design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBlack oxide finish\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps reduce main-cap walk and fretting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProvides consistent main-bearing-cap clamping\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncludes hardened parallel-ground washers and high-strength nuts\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eMain Stud Design\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe stud-style fastening system separates block-thread engagement from final clamping torque. Each stud threads into the engine block first, while the main cap is secured by tightening the nut over the washer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis arrangement reduces the twisting load placed on the fastener during final tightening and helps maintain more consistent clamping across the main-bearing caps. It is well suited to 4A-GE engine rebuilds, naturally aspirated performance builds, and other applications where increased bottom-end fastener strength is desired.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eVehicle Fitment\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eToyota Corolla Levin AE86\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1983–1987 Toyota Corolla Levin – AE86 – 1.6L 4A-GE \/ 4A-GEU DOHC 16V\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eToyota Sprinter Trueno AE86\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1983–1987 Toyota Sprinter Trueno – AE86 – 1.6L 4A-GE \/ 4A-GEU DOHC 16V\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eToyota Corolla Sport GT-S AE86\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1985–1987 Toyota Corolla Sport GT-S –  AE86 – 1.6L 4A-GE DOHC 16V\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eToyota MR2 AW11\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1984–1989 Toyota MR2 – AW11 – 1.6L 4A-GE DOHC 16V\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eFitment Notes\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eFor Toyota 4A-GE DOHC 16-valve engines\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eDoes not fit the factory AE86 SR5 4A-C SOHC engine\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAE86 SR5 fitment requires a properly completed 4A-GE engine conversion\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for a 2-bolt main-cap configuration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNot designed for windage-tray mounting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine disassembly is required for main-stud installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMain-bearing clearances and crankshaft alignment should be checked during engine assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFollow the supplied fastener installation and torque procedure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProfessional engine assembly or machine-shop inspection is recommended for performance engine builds\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ARP\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eProduct Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Engine Main Stud Kit\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eEngine Family:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Toyota 4A-GE\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eEngine Displacement:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1.6L\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCylinder Head Configuration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e DOHC 16V\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eMain Configuration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 2-Bolt Main\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eFastener Style:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Stud\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eNut Style:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Standard Hex\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eMaterial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8740 Chromoly Steel\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eFinish:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Black Oxide\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eTensile Strength:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 190,000 psi\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eWashers Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eNuts Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eWindage Tray Provision:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e No\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Crankshaft Main Bearing Cap Fastening\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eManufacturer Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Aftermarket Performance\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eWhat's Included\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eARP 4A-GE main studs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh-strength hex fastening nuts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHardened parallel-ground washers\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":53537731051829,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/ChatGPT_Image_Sep_15_2026_02_07_36_PM.png?v=1789495674","url":"https:\/\/preserverad.com\/products\/arp-4age-main-stud-kit-ae86-aw11","provider":"Preserve Rad","version":"1.0","type":"link"}