{"product_id":"bourne-hpp-k20-block-coolant-diverter-replaces-honda-11103-rac-003","title":"Bourne HPP K20 Block Coolant Diverter | Partition Plate","description":"\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eThe essential K20 component that is becoming impossible to find, now engineered and manufactured in-house by Bourne HPP.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003eIf you are building a Honda K20 engine, the \u003cb data-path-to-node=\"10\" data-index-in-node=\"44\"\u003eCoolant Diverter (Genuine Honda 11103-RAC-003 Partition Plate)\u003c\/b\u003e is not optional. With Genuine Honda stocks dwindling and lead times increasing, engine builders are often left stalled. We solved the supply chain issue by reverse-engineering the OEM design to create a precise, 3D-printed motorsport replacement.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eWhy You Need This Part\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp data-path-to-node=\"12\"\u003eThis component inserts directly into the K20 block’s water jacket. Its job is to manipulate the flow of coolant, forcing it to travel the full length of the block to cool \u003cb data-path-to-node=\"12\" data-index-in-node=\"171\"\u003eCylinders 3 and 4\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003eWithout this diverter in place, coolant follows the path of least resistance, bypassing the rear cylinders. This results in:\u003c\/p\u003e\n\u003cul data-path-to-node=\"14\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,0,0\"\u003e\u003cb data-path-to-node=\"14,0,0\" data-index-in-node=\"0\"\u003eThermal Instability:\u003c\/b\u003e Dangerous \"hot spots\" at the rear of the block.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,1,0\"\u003e\u003cb data-path-to-node=\"14,1,0\" data-index-in-node=\"0\"\u003eDetonation Risk:\u003c\/b\u003e Increased likelihood of knock in high-load scenarios.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,2,0\"\u003e\u003cb data-path-to-node=\"14,2,0\" data-index-in-node=\"0\"\u003eWarping:\u003c\/b\u003e Uneven thermal expansion can lead to head gasket failure or warped heads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"15\"\u003e\u003cb data-path-to-node=\"15\" data-index-in-node=\"0\"\u003eThe Bourne HPP Advantage\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp data-path-to-node=\"16\"\u003eWe don't just sell parts; we build \u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/bournehpp.com\/pages\/engine-design-development\" title=\"https:\/\/bournehpp.com\/pages\/engine-design-development\" rel=\"noopener\" style=\"color: rgb(255, 42, 0);\" target=\"_blank\"\u003echampionship-winning engines\u003c\/a\u003e\u003c\/strong\u003e\u003c\/span\u003e. When we couldn't source these plates fast enough for our own race builds, we manufactured our own.\u003c\/p\u003e\n\u003cul data-path-to-node=\"17\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,0,0\"\u003e\u003cb data-path-to-node=\"17,0,0\" data-index-in-node=\"0\"\u003eReverse Engineered Precision:\u003c\/b\u003e Scanned and modelled directly from a brand-new Genuine Honda 11103-RAC-003 unit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,1,0\"\u003e\u003cb data-path-to-node=\"17,1,0\" data-index-in-node=\"0\"\u003eHigh-Grade Manufacturing:\u003c\/b\u003e 3D printed using heat-resistant, durable polymers designed to withstand the harsh environment of a race engine's water jacket.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,2,0\"\u003e\u003cb data-path-to-node=\"17,2,0\" data-index-in-node=\"0\"\u003eDirect Fitment:\u003c\/b\u003e A drop-in replacement that requires no modification to the block.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"18\"\u003e\u003cb data-path-to-node=\"18\" data-index-in-node=\"0\"\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"19\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,0,0\"\u003e\u003cb data-path-to-node=\"19,0,0\" data-index-in-node=\"0\"\u003eBourne Part Number:\u003c\/b\u003e BHP-K20-11103\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,1,0\"\u003e\u003cb data-path-to-node=\"19,1,0\" data-index-in-node=\"0\"\u003eReplaces OEM Part:\u003c\/b\u003e 11103-RAC-003 (Plate, Partition)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,2,0\"\u003e\u003cb data-path-to-node=\"19,2,0\" data-index-in-node=\"0\"\u003eMaterial:\u003c\/b\u003e High-Temp Motorsport Polymer (3D Printed)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"19,3,0\"\u003e\u003cb data-path-to-node=\"19,3,0\" data-index-in-node=\"0\"\u003eFitment:\u003c\/b\u003e All Honda K20 Engine Blocks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bourne HPP","offers":[{"title":"Default Title","offer_id":56764878651767,"sku":"BHP-K20-11103","price":18.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/5592\/4087\/files\/Coolant_Diverter_Partition_Plate_K20_Honda_Bourne_HPP.png?v=1771518248","url":"https:\/\/bournehpp.com\/products\/bourne-hpp-k20-block-coolant-diverter-replaces-honda-11103-rac-003","provider":"Bourne HPP LTD","version":"1.0","type":"link"}