{"title":"Hoses and Fittings","description":"","products":[{"product_id":"ls-swap-heater-bypass-block","title":"LS Swap Heater Bypass Block - 3\/4\" and 5\/8\" Ports","description":"\u003cp\u003eHere is an important product from LOJ Conversions: The \u003cstrong data-mce-fragment=\"1\"\u003eLS Swap Heater Bypass Block\u003c\/strong\u003e. \u003cspan\u003e\u003cem\u003eUS Patent Pending...\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis version of the LOJ Conversions Heater Bypass Block is manufactured with a 5\/8\" and 3\/4\" Hose Nipples on each end of the heater block. It is supplied with a 3\/8\" NPT port plug and a 3\/8\" NPT to 1\/8\" NPT bushing for the installation of an aftermarket coolant temp sensor. It also includes a 3\/8\"NPT to M12x1.25 bushing to suit the installation of a factory Nissan 300ZX or 240SX Gauge coolant temp sensor. A set screw for grounding the block is also included, and often required when installing single wire temperature sensors. Two mounting holes are integrated as well, for mounting to the vehicle chassis if desired. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a heater block with 5\/8\" ports at all 4 positions, \u003ca href=\"https:\/\/www.lojkits.com\/collections\/cooling-system-1\/products\/copy-of-ls-swap-heater-bypass-block-3-4-and-5-8-ports\"\u003eCLICK HERE\u003c\/a\u003e\u003ca href=\"https:\/\/bnx6h05omzv05scr-9893576.shopifypreview.com\/collections\/cooling-system-1\/products\/copy-of-ls-swap-heater-bypass-block-3-4-and-5-8-ports\"\u003e!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a heater block with 8AN ORB ports, \u003ca href=\"https:\/\/www.lojkits.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block-all-female-8an-orb-ports\"\u003eCLICK HERE\u003c\/a\u003e\u003ca href=\"https:\/\/bnx6h05omzv05scr-9893576.shopifypreview.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block-all-female-8an-orb-ports\"\u003e!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhy is this important, and why does it exist?\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThat answer is simple and complicated. This block installs in-line with your heater hoses. You will notice in this cross section picture, that the coolant passages form an \"H\".\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/LSSWP-HTRB-4_medium.JPG?17990157811435841407\" style=\"float: none;\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe heater circuit on some Nissan vehicles (300ZX, 240SX) as well as many classic muscle cars utilize a heater control valve that blocks flow to the heater core when the heat is off. This completely stops flow through the heater core hoses.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe heater circuits on Chevy LS powered vehicles utilize a heater control valve that has an internal bypass. When the heat is off in a Chevy LS powered vehicle, coolant still flows through the heater hoses.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\"So what?\" - Well, it is a well known fact in the LS community that you can not block the heater ports on your water pump, they must be looped to always allow flow. If flow is blocked in these ports, you will cause a pressure differential on your water pump impeller creating cavitation, resulting in aeration of your coolant and an overheating condition.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003eThis product is intended to solve this issue, while also adding a convenient place to mount your stock gauge coolant temp sensor, as well as an aftermarket CTS if desired. The block is available with or without a new factory style CTS, and with both a bushing and plug for the aftermarket CTS port. There is also a mounting screw for a grounding wire for proper gauge operation.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe coolant will always take the path of least resistance, which is a straight shot to and from your heater core, but will pass through the \"H\" when the heat is off. We have tested this product in 20* ambient temps and the heat works flawlessly.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"No \/ No","offer_id":8438041411,"sku":"LSSWP-HTRB","price":119.95,"currency_code":"USD","in_stock":true},{"title":"No \/ Yes","offer_id":8438041475,"sku":"LSSWP-HTRB, LSSWP-HTRB-Z32TS","price":134.95,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No","offer_id":40379997159526,"sku":"LSSWP-HTRB, ADP","price":129.95,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Yes","offer_id":40379997192294,"sku":"LSSWP-HTRB, LSSWP-HTRB-Z32TS, ADP","price":144.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/LSSWP-HTRBLOJConversionsLsLSXSwapHeaterBlockHoseBilletZ32300zx.png?v=1756742849"},{"product_id":"heater-core-outlets-z32-300zx-engine-swap","title":"Heater Core Outlets - Z32 300ZX Engine Swap","description":"\u003cp\u003e\u003cspan\u003eThe LOJ Conversions heater core outlets are used to redirect the factory heater core outlets allowing engines to be placed closer to the firewall. These also change the outlet sizes from the factory 1\/2” inlet and outlet to 5\/8” and 3\/4”, which is the same as the ports on Gen III\/IV Small Block Engines. For a complete How-To installation video, please visit the support section of our website.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/youtu.be\/fFWrGhoanN4\"\u003eWatch Instructional Video Here \u003c\/a\u003e(YouTube Link)\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"Default Title","offer_id":11157550086,"sku":"Z32LS-HOUT","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/products\/Z32LS-HOUTNissan300ZXZ32LSLSXSwapHeaterCoreOutlets.png?v=1756742816"},{"product_id":"350z-and-g35-lsx-swap-radiator-hoses","title":"350Z and G35 LSx Swap Radiator Hoses for LOJ Swap Radiators","description":"\u003cp\u003eThe LOJ Conversions LSx Swap Radiator Hoses are OEM Quality Hoses that will make the installation of your \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eLOJ 350Z and G35 LS Swap Radiator\u003c\/strong\u003e\u003c\/span\u003e a breeze! This kit includes upper and lower radiator hoses, a steam vent hose, and required hose clamps. The radiator hoses are intended to be used with an LSA style Water Pump with it's downward angled thermostat housing and drivers side upper hose outlet. The Steam Vent Hose is intended to be used with a coolant crossover tube with a LH (US Driver Side) outlet. \u003cspan style=\"text-decoration: underline;\"\u003eThese will ONLY WORK with the LOJ Swap Radiator. They will NOT WORK with the stock Z\/G radiator!!!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease note that the hoses are intended to be cut to fit. Every vehicle is slightly different, and sufficient length is provided for trimming to a precise fit.\u003c\/em\u003e\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"Default Title","offer_id":54083205013,"sku":"Z33LS-RADI-HOSES","price":129.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/Screenshot2024-01-17132915.png?v=1756742585"},{"product_id":"350z-and-g35-lsx-swap-heater-hoses","title":"350Z and G35 LSx Swap Heater Hoses","description":"\u003cp\u003eThe LOJ Conversions LSx Swap Heater Hoses are OEM Quality Hoses that will make the installation of an LS Engine into your 350Z and G35 a breeze! This kit includes 4 molded heater hoses, a heater hose union fitting, and required hose clamps. \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease note that the hoses are intended to be cut to fit. Every vehicle is slightly different, and sufficient length is provided for trimming to a precise fit.\u003c\/em\u003e\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"Default Title","offer_id":54083242197,"sku":"Z33LS-HTRH","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/Screenshot2024-01-17132902.png?v=1756742584"},{"product_id":"copy-of-ls-swap-heater-bypass-block-3-4-and-5-8-ports","title":"LS Swap Heater Bypass Block - All 5\/8\" Ports","description":"\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cspan\u003eHere is an important product from LOJ Conversions: The \u003cstrong\u003eLS Swap Heater Bypass Block\u003c\/strong\u003e.  \u003c\/span\u003e\u003cspan\u003e\u003cem\u003eUS Patent Pending...\u003c\/em\u003e\u003c\/span\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis version of the LOJ Conversions Heater Bypass Block is manufactured with 5\/8\" Hose Nipples on all 4 ports of the heater block. It is supplied with a 3\/8\" NPT port plug and a 3\/8\" NPT to 1\/8\" NPT bushing for the installation of an aftermarket coolant temp sensor. A set screw for grounding the block is also included, and often required when installing single wire temperature sensors. Two mounting holes are integrated as well, for mounting to the vehicle chassis if desired. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a heater block with 3\/4\" and 5\/8\" ports,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.lojkits.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block\"\u003eCLICK HERE\u003c\/a\u003e\u003ca href=\"https:\/\/bnx6h05omzv05scr-9893576.shopifypreview.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block\"\u003e!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a heater block with 8AN ORB ports,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.lojkits.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block-all-female-8an-orb-ports\"\u003eCLICK HERE\u003c\/a\u003e\u003ca href=\"https:\/\/bnx6h05omzv05scr-9893576.shopifypreview.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block-all-female-8an-orb-ports\"\u003e!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhy is this important, and why does it exist?\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThat answer is simple and complicated. This block installs in-line with your heater hoses. You will notice in this cross section picture, that the coolant passages form an \"H\".\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/LSSWP-HTRB-4_medium.JPG?17990157811435841407\" alt=\"\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe heater circuit on some Nissan vehicles (300ZX, 240SX) as well as many classic muscle cars utilize a heater control valve that blocks flow to the heater core when the heat is off. This completely stops flow through the heater core hoses.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe heater circuits on Chevy LS powered vehicles utilize a heater control valve that has an internal bypass. When the heat is off in a Chevy LS powered vehicle, coolant still flows through the heater hoses.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\"So what?\" - Well, it is a well known fact in the LS community that you can not block the heater ports on your water pump, they must be looped to always allow flow. If flow is blocked in these ports, you will cause a pressure differential on your water pump impeller creating cavitation, resulting in aeration of your coolant and an overheating condition.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003eThis product is intended to solve this issue, while also adding a convenient place to mount your stock gauge coolant temp sensor, as well as an aftermarket CTS if desired. The block is available with or without a new factory style CTS, and with both a bushing and plug for the aftermarket CTS port. There is also a mounting screw for a grounding wire for proper gauge operation.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe coolant will always take the path of least resistance, which is a straight shot to and from your heater core, but will pass through the \"H\" when the heat is off. We have tested this product in 20* ambient temps and the heat works flawlessly.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"Default Title","offer_id":32260197613670,"sku":"LSSWP-HTRB-5\/8","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/LSSWP-HTRB-58LSLSXEngineSwapHeaterBlockBillet.png?v=1756742302"},{"product_id":"ls-swap-heater-bypass-block-all-female-8an-orb-ports","title":"LS Swap Heater Bypass Block - All Female 8AN ORB Ports","description":"\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cspan\u003eHere is an important product from LOJ Conversions: The \u003cstrong\u003eLS Swap Heater Bypass Block\u003c\/strong\u003e.  \u003c\/span\u003e\u003cspan\u003e\u003cem\u003eUS Patent Pending...\u003c\/em\u003e\u003c\/span\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis version of the LOJ Conversions Heater Bypass Block is manufactured with 5\/8\" Hose Nipples on all 4 ports of the heater block. It is supplied with a 3\/8\" NPT port plug and a 3\/8\" NPT to 1\/8\" NPT bushing for the installation of an aftermarket coolant temp sensor. A set screw for grounding the block is also included, and often required when installing single wire temperature sensors. Two mounting holes are integrated as well, for mounting to the vehicle chassis if desired. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a heater block with 3\/4\" and 5\/8\" ports,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.lojkits.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block\"\u003eCLICK HERE\u003c\/a\u003e\u003ca href=\"https:\/\/bnx6h05omzv05scr-9893576.shopifypreview.com\/collections\/cooling-system-1\/products\/ls-swap-heater-bypass-block\"\u003e!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor a heater block with 5\/8\" ports at all 4 locations,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.lojkits.com\/collections\/cooling-system-1\/products\/copy-of-ls-swap-heater-bypass-block-3-4-and-5-8-ports\"\u003eCLICK HERE\u003c\/a\u003e\u003ca href=\"https:\/\/bnx6h05omzv05scr-9893576.shopifypreview.com\/collections\/cooling-system-1\/products\/copy-of-ls-swap-heater-bypass-block-3-4-and-5-8-ports\"\u003e!\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhy is this important, and why does it exist?\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThat answer is simple and complicated. This block installs in-line with your heater hoses. You will notice in this cross section picture, that the coolant passages form an \"H\".\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/LSSWP-HTRB-4_medium.JPG?17990157811435841407\" style=\"float: none;\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe heater circuit on some Nissan vehicles (300ZX, 240SX) as well as many classic muscle cars utilize a heater control valve that blocks flow to the heater core when the heat is off. This completely stops flow through the heater core hoses.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe heater circuits on Chevy LS powered vehicles utilize a heater control valve that has an internal bypass. When the heat is off in a Chevy LS powered vehicle, coolant still flows through the heater hoses.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\"So what?\" - Well, it is a well known fact in the LS community that you can not block the heater ports on your water pump, they must be looped to always allow flow. If flow is blocked in these ports, you will cause a pressure differential on your water pump impeller creating cavitation, resulting in aeration of your coolant and an overheating condition.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003eThis product is intended to solve this issue, while also adding a convenient place to mount your stock gauge coolant temp sensor, as well as an aftermarket CTS if desired. The block is available with or without a new factory style CTS, and with both a bushing and plug for the aftermarket CTS port. There is also a mounting screw for a grounding wire for proper gauge operation.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe coolant will always take the path of least resistance, which is a straight shot to and from your heater core, but will pass through the \"H\" when the heat is off. We have tested this product in 20* ambient temps and the heat works flawlessly.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"No Thanks","offer_id":32260203053158,"sku":"LSSWP-HTRB-8AN","price":99.95,"currency_code":"USD","in_stock":true},{"title":"Yes Please (Qty. 4 8AN ORB to 8AN Flare Fittings) +$30","offer_id":32260203085926,"sku":"LSSWP-HTRB-8AN, Include Fittings","price":129.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/LSSWP-HTRB-8ANLSSwapHeaterBlock8ANPortEngineCoolantBypass.png?v=1756742301"},{"product_id":"3-8-npt-to-m12-x-1-25-adapter-fitting","title":"3\/8 NPT to M12 x 1.25 Adapter Fitting","description":"\u003cp\u003eBrass 3\/8 NPT to M12 x 1.25 thread adapter fitting for Nissan Coolant Temp Sensors (300zx and 240sx). This fitting is intended for use in the side of the \u003ca href=\"https:\/\/www.lojkits.com\/products\/ls-swap-heater-bypass-block\"\u003eHeater Bypass Block\u003c\/a\u003e on a swapped car using the OEM cluster utilizing the Factory Coolant Temp Sensor.\u003c\/p\u003e","brand":"LOJ Conversions","offers":[{"title":"Default Title","offer_id":42755323658342,"sku":null,"price":23.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3576\/files\/NPTtoM121.25Adapterfittingheaterblockbrass.png?v=1756741846"}],"url":"https:\/\/lojkits.com\/collections\/cooling-system\/240sx-s13-s14-s15-chassis.oembed","provider":"LOJ Conversions","version":"1.0","type":"link"}