{"product_id":"bull-boost-performance-cylinder-4-cooling-mod-subaru-ej20-ej25-wrx-sti-lgt-fxt-02-14-wrx-04-21-sti","title":"Bull Boost Performance Cylinder 4 Cooling Mod – Subaru EJ20 \/ EJ25 WRX STI LGT FXT (02–14 WRX \/ 04–21 STI)","description":"\u003ch3 data-section-id=\"ad89hv\" data-start=\"0\" data-end=\"114\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"4\" data-end=\"114\"\u003eBull Boost Performance Cylinder 4 Cooling Mod – Subaru EJ20 \/ EJ25 WRX STI LGT FXT (02–14 WRX \/ 04–21 STI)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"116\" data-end=\"147\"\u003e\u003cstrong data-start=\"116\" data-end=\"132\"\u003ePart Number:\u003c\/strong\u003e 720053572384\u003c\/p\u003e\n\u003chr data-start=\"149\" data-end=\"152\"\u003e\n\u003ch3 data-section-id=\"1dvqnf5\" data-start=\"154\" data-end=\"184\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"158\" data-end=\"182\"\u003eProduct Description:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"185\" data-end=\"471\"\u003eImprove engine reliability and cooling efficiency with the \u003cstrong data-start=\"244\" data-end=\"293\"\u003eBull Boost Performance Cylinder 4 Cooling Mod\u003c\/strong\u003e, engineered specifically for Subaru EJ-series engines. This upgrade is designed to increase coolant flow to cylinder #4, the hottest and most failure-prone area in EJ platforms.\u003c\/p\u003e\n\u003cp data-start=\"473\" data-end=\"808\"\u003eBy improving coolant distribution to the rear of the engine, this modification helps balance overall cylinder temperatures, reducing the risk of detonation and lowering the likelihood of ringland failure. Ideal for both street-driven and performance-built Subaru applications, this is a simple yet highly effective reliability upgrade.\u003c\/p\u003e\n\u003chr data-start=\"810\" data-end=\"813\"\u003e\n\u003ch3 data-section-id=\"37mg0c\" data-start=\"815\" data-end=\"838\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"819\" data-end=\"836\"\u003eKey Features:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"839\" data-end=\"1207\"\u003e\n\u003cli data-section-id=\"5npv43\" data-start=\"839\" data-end=\"900\"\u003ePremium \u003cstrong data-start=\"849\" data-end=\"875\"\u003eBull Boost Performance\u003c\/strong\u003e cooling system upgrade\u003c\/li\u003e\n\u003cli data-section-id=\"q88d7s\" data-start=\"901\" data-end=\"952\"\u003eIncreases coolant flow to cylinder #4 head area\u003c\/li\u003e\n\u003cli data-section-id=\"la1mpn\" data-start=\"953\" data-end=\"1003\"\u003eHelps balance engine-wide coolant temperatures\u003c\/li\u003e\n\u003cli data-section-id=\"u3jy0z\" data-start=\"1004\" data-end=\"1059\"\u003eReduces risk of knock and detonation in cylinder #4\u003c\/li\u003e\n\u003cli data-section-id=\"15s727a\" data-start=\"1060\" data-end=\"1117\"\u003eDesigned to improve EJ engine reliability under boost\u003c\/li\u003e\n\u003cli data-section-id=\"u9v28h\" data-start=\"1118\" data-end=\"1156\"\u003eSimple bolt-on installation design\u003c\/li\u003e\n\u003cli data-section-id=\"p17zj5\" data-start=\"1157\" data-end=\"1207\"\u003eIncludes all necessary installation components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1209\" data-end=\"1212\"\u003e\n\u003ch3 data-section-id=\"267exh\" data-start=\"1214\" data-end=\"1232\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1218\" data-end=\"1230\"\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1233\" data-end=\"1377\"\u003e\n\u003cli data-section-id=\"3jaewt\" data-start=\"1233\" data-end=\"1263\"\u003eSubaru EJ20 \/ EJ25 engines\u003c\/li\u003e\n\u003cli data-section-id=\"1jn9h1f\" data-start=\"1264\" data-end=\"1288\"\u003e2002–2014 Subaru WRX\u003c\/li\u003e\n\u003cli data-section-id=\"7exkog\" data-start=\"1289\" data-end=\"1313\"\u003e2004–2021 Subaru STI\u003c\/li\u003e\n\u003cli data-section-id=\"7ucmfr\" data-start=\"1314\" data-end=\"1346\"\u003e2004–2008 Subaru Forester XT\u003c\/li\u003e\n\u003cli data-section-id=\"1kpt6r7\" data-start=\"1347\" data-end=\"1377\"\u003e2005–2009 Subaru Legacy GT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1379\" data-end=\"1382\"\u003e\n\u003ch3 data-section-id=\"1y29rd0\" data-start=\"1384\" data-end=\"1403\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1388\" data-end=\"1401\"\u003eIncluded:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1404\" data-end=\"1464\"\u003e\n\u003cli data-section-id=\"wc4sou\" data-start=\"1404\" data-end=\"1433\"\u003e1x Cylinder 4 Cooling Mod\u003c\/li\u003e\n\u003cli data-section-id=\"h9wt07\" data-start=\"1434\" data-end=\"1450\"\u003e1x T-Fitting\u003c\/li\u003e\n\u003cli data-section-id=\"1wtgwbm\" data-start=\"1451\" data-end=\"1464\"\u003e2x Clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1466\" data-end=\"1469\"\u003e\n\u003ch3 data-section-id=\"46wmff\" data-start=\"1471\" data-end=\"1501\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1475\" data-end=\"1499\"\u003eWarranty Disclaimer:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1502\" data-end=\"1613\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eAll warranties, claims, and product-related issues must be handled directly through \u003cstrong data-start=\"1586\" data-end=\"1612\"\u003eBULL BOOST PERFORMANCE\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Racing Precision Motorsports","offers":[{"title":"Default Title","offer_id":44986798538812,"sku":"720053572384","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5934\/4956\/files\/ej20no_735x763_85e51f6e-514e-49c5-ab41-6c1372fd51b9.webp?v=1777923347","url":"https:\/\/rpm-racing.com\/products\/bull-boost-performance-cylinder-4-cooling-mod-subaru-ej20-ej25-wrx-sti-lgt-fxt-02-14-wrx-04-21-sti","provider":"Racing Precision Motorsports","version":"1.0","type":"link"}