{"product_id":"katech-lt4-intake-extreme-duty-h13-tool-steel-valve-spring-replacement-retainer","title":"Katech LT4 Intake Extreme Duty H13 Tool Steel Valve Spring Replacement Retainer","description":"\u003ch2\u003eKatech LT4 Intake Extreme Duty H13 Tool Steel Valve Spring Replacement Retainer\u003c\/h2\u003e \u003cp\u003e\u003cstrong\u003e\u003cem\u003eHardened H13 Tool Steel for Compatible LT4 Intake Valve Spring Packages.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThe Katech LT4 Intake Extreme Duty H13 Tool Steel Valve Spring Replacement Retainer provides an individual service component for compatible LT4 intake valvetrain packages. Its hardened tool steel construction addresses spring-contact wear that can develop when steel valve springs contact titanium retainers over time.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReplacement Component for Compatible LT4 Intake Valvetrain Packages\u003c\/li\u003e \u003cli\u003eHardened H13 Tool Steel Construction\u003c\/li\u003e \u003cli\u003eIncreased Long-Term Wear Resistance Compared with Titanium Retainers in Evaluated Katech Camshaft Packages\u003c\/li\u003e \u003cli\u003eLighter Than the Referenced OEM Retainer\u003c\/li\u003e \u003cli\u003eProudly Engineered and Manufactured by Katech Engineering in Clinton Township, Michigan, USA\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cimg src=\"..\/files\/images\/katech-made-in-america.png\" alt=\"Proudly Made in America\" width=\"300\" height=\"64\"\u003e\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Replacement Intake Valve Spring Retainer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e LT4\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e Intake\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Hardened H13 Tool Steel\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpring Compatibility:\u003c\/strong\u003e Compatible PSI Valve Spring Packages; Confirm Specific Spring Model Before Ordering\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch3\u003eWhat's Included\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eOne Replacement Intake Valve Spring Retainer — Sold Individually\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eValve springs and valve locks are not included.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eInstallation Quantity:\u003c\/strong\u003e Eight retainers are required for a complete compatible LT4 intake valve installation.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eRetainer Weight Comparison\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReferenced OEM Retainer:\u003c\/strong\u003e 11.4 Grams\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReferenced Katech Titanium Retainer:\u003c\/strong\u003e 5.0 Grams\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eKatech H13 Tool Steel Retainer:\u003c\/strong\u003e 9.1 Grams\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch3\u003eDevelopment \u0026amp; Validation\u003c\/h3\u003e \u003cp\u003eKatech developed this design on its Spintron valvetrain dynamics test cell. Stability was validated up to 8,100 RPM in tested combinations, and durability was evaluated using Katech's 24 Hours of Daytona course simulation.\u003c\/p\u003e \u003cp\u003eThese results apply to the evaluated valvetrain packages. The operating range of a completed engine depends on its camshaft, valves, springs, lifters, pushrods, and rocker configuration.\u003c\/p\u003e \u003chr\u003e \u003ch3\u003eFitment \u0026amp; Installation Notes\u003c\/h3\u003e \u003cp\u003eConfirm that the replacement matches the existing LT4 intake valvetrain package before ordering.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eConfirm the Specific PSI Valve Spring Model\u003c\/li\u003e \u003cli\u003eVerify Valve Stem and Valve Lock Compatibility\u003c\/li\u003e \u003cli\u003eInspect Springs and Locks for Wear or Damage\u003c\/li\u003e \u003cli\u003eCheck Spring Installed Height and Spring Pressures\u003c\/li\u003e \u003cli\u003eVerify Coil Bind Clearance at Maximum Valve Lift\u003c\/li\u003e \u003cli\u003eCheck Retainer-to-Seal and Retainer-to-Guide Clearance\u003c\/li\u003e \u003cli\u003eFollow Appropriate Valvetrain Inspection and Service Intervals\u003c\/li\u003e \u003c\/ul\u003e \u003chr\u003e \u003ch3\u003eWhy Choose Katech\u003c\/h3\u003e \u003cp\u003eKatech's in-house manufacturing and valvetrain development support component selection for demanding engine builds. This replacement retainer allows a compatible LT4 intake package to be serviced one component at a time.\u003c\/p\u003e \u003chr\u003e \u003cp\u003eFor LT4 intake retainer and PSI valve spring compatibility questions, contact .\u003c\/p\u003e \u003cp\u003e\u003cimg src=\"..\/files\/prop-65-warning.jpg\" alt=\"Prop 65 Warning\"\u003e\u003c\/p\u003e","brand":"Katech","offers":[{"title":"Default Title","offer_id":47875099361436,"sku":"KAT-7119","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/3206\/5436\/files\/M198643194.jpg?v=1791938597","url":"https:\/\/daroracing.com\/products\/katech-lt4-intake-extreme-duty-h13-tool-steel-valve-spring-replacement-retainer","provider":"Daro Racing","version":"1.0","type":"link"}