{"product_id":"arp-main-bearing-cap-bolt-kit-4age-4agze-ae86-aw11-ae92","title":"ARP Main Bearing Cap Bolt Kit | 4A-GE \/ 4A-GZE (AE86 Corolla \/ AW11 MR2 \/ AE92 Corolla)","description":"\u003ch2\u003eARP Main Bearing Cap Bolt Kit\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1983–1987 Toyota Corolla AE86, 1984–1989 Toyota MR2 AW11, and 1987–1991 Toyota Corolla AE92 coupe equipped with 4A-GE \/ 4A-GZE 16V engines.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis ARP main bearing cap bolt kit is an alternative to a stud conversion for a planned 4A-GE or 4A-GZE engine build. It supplies the bolts that secure the crankshaft's main bearing caps, with washers and ARP Ultra-Torque assembly lubricant.\u003c\/p\u003e\n\u003cp\u003eApplications include 1983–1987 AE86 Corolla in Japan and 1985–1987 AE86 Corolla GT-S in the U.S.; 1984–1989 AW11 MR2 in Japan and 1985–1989 AW11 MR2 in the U.S.; and 1987–1991 Corolla AE92 coupes in Japan and 1988–1991 AE92 Corolla GT-S coupes in the U.S. Engine and supercharged-model year restrictions apply.\u003c\/p\u003e\n\u003cp\u003eIt is intended for engine-building work with factory-style main caps, not routine bolt-on maintenance. Changing main fasteners can affect main-bearing bore dimensions, so additional machine work may be necessary.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTen main-cap bolts\u003c\/strong\u003e for one engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM10 x 1.25 threads\u003c\/strong\u003e for the supported Toyota 4A-GE \/ 4A-GZE applications.\u003c\/li\u003e\n\u003cli\u003eWashers and ARP Ultra-Torque assembly lubricant included.\u003c\/li\u003e\n\u003cli\u003eA lower-cost alternative to main studs when the build does not require the stud configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla — AE86\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1983–1987:\u003c\/strong\u003e Trueno (JDM) \/ 4A-GE 16V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1983–1987:\u003c\/strong\u003e Levin (JDM) \/ 4A-GE 16V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1985–1987:\u003c\/strong\u003e GT-S (U.S.-Market) \/ 4A-GE 16V.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eToyota MR2 — AW11 \/ MK1\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1984–1989:\u003c\/strong\u003e JDM \/ naturally aspirated 4A-GE 16V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1985–1989:\u003c\/strong\u003e U.S.-Market \/ naturally aspirated 4A-GE 16V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1986–1989:\u003c\/strong\u003e JDM Supercharged \/ 4A-GZE.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e U.S.-Market Supercharged \/ 4A-GZE.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla \/ Sprinter — AE92 — Coupe\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1991:\u003c\/strong\u003e Trueno \/ Levin GT or GT APEX (JDM) \/ 4A-GE 16V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1989:\u003c\/strong\u003e Trueno \/ Levin GTV (JDM) \/ 4A-GE 16V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1987–1991:\u003c\/strong\u003e Trueno \/ Levin GT-Z (JDM) \/ 4A-GZE.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1991:\u003c\/strong\u003e GT-S coupe (U.S.-Market) \/ 4A-GE 16V.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor the specified 4A-GE and 4A-GZE engines with factory-style main bearing caps.\u003c\/strong\u003e The listed chassis years do not cover every engine offered in those vehicles.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFactory AE86 SR5 models with 4A-C engines are outside this application.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eThe kit also supports 4A-GE 20V engines. \u003cstrong\u003eEngine-swapped cars must be matched by their actual engine and main-cap arrangement, not chassis year alone.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAftermarket main caps, reinforcement caps and girdles require their own hardware selection; compatibility is not automatic.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain-bearing bore inspection and possible align-honing are part of the engine-build considerations when changing main fasteners.\u003c\/strong\u003e This kit is not a guarantee of a machining-free rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ARP\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Main bearing cap bolt kit\u003cbr\u003e\u003cstrong\u003eEngine Application:\u003c\/strong\u003e 4A-GE 16V \/ 20V and 4A-GZE\u003cbr\u003e\u003cstrong\u003eThread:\u003c\/strong\u003e M10 x 1.25\u003cbr\u003e\u003cstrong\u003eFastener Quantity:\u003c\/strong\u003e 10 bolts\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eShould You Choose Main Bolts or Main Studs?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eARP Main Bolts — Best for Keeping a Planned Performance Rebuild More Affordable\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose the bolt kit if your engine build calls for upgraded main fasteners but does not require studs or reinforcement-cap hardware. It costs less than the stud kit while retaining a bolt-style arrangement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/preserverad.com\/products\/arp-4age-main-stud-kit-ae86-aw11\"\u003e\u003cstrong\u003eARP Main Stud Kit\u003c\/strong\u003e\u003c\/a\u003e — Best for High-Load 4A-GE \/ 4A-GZE Builds\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose the stud kit for a 4A-GE \/ 4A-GZE build facing extreme engine loads, where more consistent clamping is the priority. Check the linked kit's application and any reinforcement-cap requirements rather than treating bolts and studs as interchangeable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur Recommendation:\u003c\/strong\u003e Do not replace sound factory main bolts solely for normal naturally aspirated street use. For a planned performance build, choose bolts when cost matters and studs are not required; choose studs when the engine's load or reinforcement hardware calls for them.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e(10) main bearing cap bolts.\u003c\/li\u003e\n\u003cli\u003eWashers.\u003c\/li\u003e\n\u003cli\u003eARP Ultra-Torque assembly lubricant.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":67742400184629,"sku":"1466","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/arp-main-bearing-cap-bolt-kit-01.png?v=1792551115","url":"https:\/\/preserverad.com\/products\/arp-main-bearing-cap-bolt-kit-4age-4agze-ae86-aw11-ae92","provider":"Preserve Rad","version":"1.0","type":"link"}