{"product_id":"sierra-18-2588-marine-transmission-oil-cooler-1-1-4-water-3-8-npt-oil-chrysler-inboard","title":"Sierra Transmission Oil Cooler 18-2588 for Chrysler Inboard Engines, 1 1\/4 Inch Water Inlet","description":"\u003cp\u003eThe Sierra 18-2588 Transmission Oil Cooler is a bare metal marine transmission oil cooler built for Chrysler Inboard applications. It uses a 1 1\/4 inch water hose connection and a 10 inch tube bundle with an overall length of 12 inches, giving it the cooling surface needed to keep transmission oil temperature under control during sustained inboard operation.\u003c\/p\u003e\u003cp\u003eOil enters and exits through a 9 inch x 2 inch fitting with a 3\/8 inch NPT inlet\/outlet, and the unit is rated for up to 6 GPM of oil flow and up to 25 GPM of water flow. It ships bare metal, ready for primer and factory paint finish, so it can be finished to match the engine compartment or left as-is for service use. The stainless steel construction is built to hold up in the marine environment where the cooler is mounted in the raw water cooling circuit.\u003c\/p\u003e\u003cp\u003eThis oil cooler is designed as a direct-fit replacement for the transmission cooling system on Chrysler Inboard engines, giving boat owners a straightforward way to restore proper transmission oil temperature control without modifying existing hose and fitting connections.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-2588\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Chrysler Inboard Transmission Cooler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Hose Connection:\u003c\/strong\u003e 1 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Fitting:\u003c\/strong\u003e 9 inch x 2 inch, 3\/8 inch NPT inlet\/outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Flow Rate:\u003c\/strong\u003e 6 GPM maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Flow Rate:\u003c\/strong\u003e 25 GPM maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Bundle Length:\u003c\/strong\u003e 10 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Inlet and Outlet:\u003c\/strong\u003e 1 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Bare metal, ready for primer and factory paint finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.83 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eChrysler Inboard engines using a transmission oil cooler with a 1 1\/4 inch water hose connection.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2588 transmission oil cooler fit?\u003c\/strong\u003e The Sierra 18-2588 is built as a transmission oil cooler for Chrysler Inboard engines, using a 1 1\/4 inch water hose connection to tie into the existing raw water cooling circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the water hose connection?\u003c\/strong\u003e The 18-2588 uses a 1 1\/4 inch water hose connection on both the inlet and outlet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow large is the cooler's tube bundle?\u003c\/strong\u003e The tube bundle measures 10 inches, with an overall unit length of 12 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size are the oil fittings?\u003c\/strong\u003e Oil fittings on the 18-2588 measure 9 inch x 2 inch with a 3\/8 inch NPT inlet and outlet connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum oil and water flow rating?\u003c\/strong\u003e The Sierra 18-2588 is rated for up to 6 GPM of oil flow and up to 25 GPM of water flow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2588 come painted?\u003c\/strong\u003e No, it ships bare metal and is ready for primer and factory paint finish, so it can be painted to match the engine before or after installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the cooler made from?\u003c\/strong\u003e The Sierra 18-2588 transmission oil cooler is constructed from stainless steel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2588 weigh?\u003c\/strong\u003e This transmission oil cooler weighs 2.83 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2588 a direct replacement for the factory Chrysler Inboard transmission cooler?\u003c\/strong\u003e Yes, the 18-2588 is designed to replace the Chrysler Inboard transmission oil cooler using the same 1 1\/4 inch water hose connection and NPT oil fitting sizing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order part number 18-2588?\u003c\/strong\u003e Ordering 18-2588 gets you the complete transmission oil cooler unit, ready for installation once primed and painted as needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this cooler be installed without additional plumbing modifications?\u003c\/strong\u003e Because the 18-2588 uses the standard 1 1\/4 inch water connection and 3\/8 inch NPT oil fitting, it is intended to connect using the same hose and fitting sizes as the original Chrysler Inboard transmission cooler.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107505883,"sku":"SIE-18-2588","price":282.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__06593.1753840675.500.750.jpg?v=1785188585","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2588-marine-transmission-oil-cooler-1-1-4-water-3-8-npt-oil-chrysler-inboard","provider":"Good Vibes Marina","version":"1.0","type":"link"}