{"product_id":"fleece-allison-transmission-cooler-lines-fpe-tl-lb7-lly-2001-2005-6-6l-duramax-lb7-lly","title":"FLEECE ALLISON TRANSMISSION COOLER LINES FPE-TL-LB7-LLY | 2001-2005 6.6L Duramax LB7\/LLY","description":"\u003cp\u003eReplace the leaking or damaged factory transmission cooler lines on your 2001–2005 GM 6.6L Duramax LB7 or LLY with the Fleece FPE-TL-LB7-LLY Allison Transmission Cooler Line Kit. Designed for improved durability and reliability, these heavy-duty high-flow transmission lines provide a dependable solution for maintaining proper fluid flow and cooling performance.\u003c\/p\u003e\n\u003cp\u003eEngineered with flexibility and serviceability in mind, this kit includes all the necessary fittings for installation on trucks equipped with either the factory radiator or a Setrab-style aftermarket radiator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReplaces leaking, damaged, or deteriorated factory cooler lines\u003c\/li\u003e\n\u003cli\u003eImproves durability and reliability over stock components\u003c\/li\u003e\n\u003cli\u003eHigh-flow design supports proper transmission cooling\u003c\/li\u003e\n\u003cli\u003eCompatible with stock and Setrab-equipped radiator systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-duty transmission cooler line kit\u003c\/li\u003e\n\u003cli\u003eHigh-flow and flexible hose design\u003c\/li\u003e\n\u003cli\u003eIncludes all required installation fittings\u003c\/li\u003e\n\u003cli\u003eWorks with factory radiator or Setrab-equipped radiator setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5\/8\" ID transmission lines\u003c\/li\u003e\n\u003cli\u003e(6) 7\/8\"-14 O-ring to -10AN fittings\u003c\/li\u003e\n\u003cli\u003e(2) 3\/4\"-16 O-ring to -10AN fittings\u003c\/li\u003e\n\u003cli\u003e(2) 1\/2\" NPT to -10AN fittings\u003c\/li\u003e\n\u003cli\u003e(2) M22x1.5 to -10AN Setrab fittings\u003c\/li\u003e\n\u003cli\u003e(2) Large OD washers\u003c\/li\u003e\n\u003cli\u003e(1) Double hose clamp\u003c\/li\u003e\n\u003cli\u003e(2) Locking cable ties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2001–2004 GM Silverado\/Sierra 2500HD \u0026amp; 3500HD 6.6L Duramax LB7\u003c\/li\u003e\n\u003cli\u003e2004.5–2005 GM Silverado\/Sierra 2500HD \u0026amp; 3500HD 6.6L Duramax LLY\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSetrab fittings are included for trucks equipped with aftermarket radiators.\u003c\/li\u003e\n\u003cli\u003eDue to the wide variety of aftermarket cooling system combinations, fitment cannot be guaranteed on non-stock components.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance Engineering","offers":[{"title":"Default Title","offer_id":52327116308763,"sku":"FPE-TL-LB7-LLY","price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-06-10at10.52.46AM.png?v=1781110396","url":"https:\/\/wwmperformance.com\/products\/fleece-allison-transmission-cooler-lines-fpe-tl-lb7-lly-2001-2005-6-6l-duramax-lb7-lly","provider":"WWM Performance","version":"1.0","type":"link"}