{"product_id":"1jz-2jz-rear-main-seal-installer","title":"MK1 Motorsport Toyota \u0026 Lexus 1JZ \/ 2JZ Rear Main Seal Installer","description":"\u003cp\u003e\u003cspan\u003eThe MK1 Motorsport 1JZ \/ 2JZ Rear Main Seal Installer is a purpose-built service tool designed to make rear crankshaft seal installation on Toyota JZ engines more controlled and repeatable. Designed for JZ enthusiasts, mechanics, and engine builders, the tool helps properly seat the rear main seal after accessing the rear of the crankshaft.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured using FDM 3D printing from high-infill ASA plastic, the installer is designed for repeated workshop use. It supports compatible 1JZ and 2JZ engine applications and can be used with the flywheel bolts or carefully driven into position using a rubber mallet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDesigned for Toyota JZ Engines:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Purpose-built for rear main seal installation on compatible Toyota 1JZ and 2JZ engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eControlled Seal Installation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Helps seat the rear main crankshaft seal in a simple and repeatable manner.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTwo Installation Methods:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Can be installed using compatible flywheel bolts or carefully seated using a rubber mallet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDesigned Installation Depth:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The tool is designed to bottom against the flywheel end of the crankshaft during installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimulated Flywheel Thickness:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed to simulate approximately 19 mm of flywheel thickness during the installation process.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHigh-Infill ASA Construction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e FDM 3D printed from high-infill ASA plastic for durability and repeated workshop use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDesigned \u0026amp; Fabricated in the USA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e All components are designed and fabricated in the United States.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWhat's Included\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e(1) MK1 Motorsport 1JZ \/ 2JZ Rear Main Seal Installer\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eVehicle Fitment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eToyota 1JZ engine applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eToyota 2JZ engine applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible Toyota and Lexus vehicles equipped with an applicable 1JZ or 2JZ engine\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible engine swap and standalone engine applications using an applicable 1JZ or 2JZ engine\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: MK1 Motorsport\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProduct Type: Rear Main Seal Installer\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine Family: Toyota JZ\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine Compatibility: 1JZ \/ 2JZ\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaterial: ASA Plastic\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConstruction: High-Infill\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eManufacturing Process: FDM 3D Printed\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSimulated Flywheel Thickness: Approximately 19 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaximum Recommended Installer Torque: Less than 14 ft-lbs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesign \u0026amp; Fabrication Location: USA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntended Use: Rear Main Crankshaft Seal Installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eQuantity: 1\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInstallation Method 1: Recommended\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eLubricate the inner lip of the rear main seal.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePosition the seal at the rear main seal housing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlace the MK1 Motorsport Rear Main Seal Installer over the seal.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInsert the applicable flywheel bolts through the installer.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCarefully and evenly tighten the bolts to begin seating the seal.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eContinue until the installer bottoms against the flywheel end of the crankshaft.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not over-tighten the installer. MK1 Motorsport recommends less than 14 ft-lbs. A firm fit is all that is required.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInstallation Method 2\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003ePosition the rear main seal at the rear main seal housing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlace the installer over the seal and lightly press it into position by hand.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse a rubber mallet to lightly and evenly tap the installer.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eContinue until the installer bottoms against the flywheel end of the crankshaft.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eImportant Notes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePlease allow approximately 1–2 weeks of production time before shipment due to high demand.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRear main seal is not included.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for compatible Toyota 1JZ and 2JZ engine applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe installer is designed to simulate approximately 19 mm of flywheel thickness.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMK1 Motorsport recommends using Method 2 when using a stock flywheel bolt with an automatic transmission or shortened ARP bolts with certain twin-disc flywheel configurations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not exceed the manufacturer's recommended installer torque of less than 14 ft-lbs when using Method 1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe less-than-14-ft-lbs value applies to use of the seal installer and is not the final flywheel bolt torque specification.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse a rubber or other appropriate non-marring mallet when following Method 2.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep the seal properly centered during installation to reduce the risk of damage or improper seating.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInspect the installer for cracks, deformation, or other damage before each use.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRefer to the appropriate Toyota or Lexus service information for engine disassembly, reassembly, and final fastener torque specifications.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWhy Choose MK1 Motorsport?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MK1 Motorsport 1JZ \/ 2JZ Rear Main Seal Installer provides an application-specific alternative to improvised rear main seal installation methods. Its approximately 19 mm simulated flywheel thickness and application-specific design help provide a controlled and repeatable approach to seating the rear crankshaft seal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor enthusiasts, mechanics, and engine builders regularly servicing Toyota JZ engines, it provides a reusable tool for simplifying a common 1JZ and 2JZ maintenance procedure.\u003c\/span\u003e\u003c\/p\u003e","brand":"MK1 Motorsport","offers":[{"title":"Grey","offer_id":67819436310849,"sku":"8","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":67819436343617,"sku":"8","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0835\/9362\/5921\/files\/IMG_E2415.jpg?v=1791173030","url":"https:\/\/lunaticsco.com\/products\/1jz-2jz-rear-main-seal-installer","provider":"LunaticsCo","version":"1.0","type":"link"}