{"title":"Cooling","description":null,"products":[{"product_id":"csf-hx-b58","title":"CSF High-Performance Heat Exchanger — B58 (G2x \/ G4x \/ Z4)","description":"\u003cp\u003e\u003cstrong\u003eCSF front-mount heat exchanger for the Gen-2 B58 — the radiator side of the water-to-air charge-cooling system.\u003c\/strong\u003e On these cars the intake charge is cooled by a coolant loop, and this front exchanger is what pulls heat back out of that coolant. The factory unit is a single-row, ~25mm core; once boost goes up it can't shed heat fast enough and intake temps climb pull after pull.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eA 2-row, 42mm core using CSF's B-Tube internal geometry — far more cooling capacity than the OEM single-row piece. All-aluminum and TIG-welded, with an included rock guard and OEM transmission-cooler mounting points built in. Drop-in fit using the factory locations and quick-connect lines.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eGen-2 B58 — G20\/G21 330i \u0026amp; M340i, G22\/G23\/G26 430i \u0026amp; M440i, G42 M240i, and G29 Z4. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the heat-exchanger-side core of a B58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280696999997,"sku":"CSF 8154","price":1105.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280697032765,"sku":"CSF 8154","price":905.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280697065533,"sku":"CSF 8154","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/csf-f3x-f2x-b58-b48-triple-pass-02.webp?v=1781742886"},{"product_id":"airtec-chargecooler-radiator-s55","title":"AIRTEC Chargecooler Radiator Upgrade — S55","description":"\u003cp\u003e\u003cstrong\u003eAIRTEC chargecooler radiator (pre-rad) for the S55 — F80 M3, F82\/F83 M4, F87 M2 Competition.\u003c\/strong\u003e The front heat exchanger that feeds the S55's air-to-water charge-cooling loop. A bigger, cooler-running pre-rad keeps coolant temps down so the chargecooler can keep doing its job on long pulls.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eTwin-pass design, 540mm × 410mm × 45mm — 9.9 litres, more than double the OEM 4.5 litres, with roughly 40% more frontal area. Uses OEM mounts and coolant connectors; includes a removable stone guard and full fitting kit. Black powder-coat.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW S55 — F80 M3, F82\/F83 M4, F87 M2 Competition. Confirm your chassis.\u003c\/p\u003e\n\u003cp\u003ePart no. ATRADBMW1. Pairs with the AIRTEC billet chargecooler. Heat-exchanger-side core of an S55 Stage 2 build — the \u003ca href=\"\/products\/stage-2-kit-s55\"\u003eStage 2 Kit — S55\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"AIRTEC Motorsport","offers":[{"title":"Default Title","offer_id":43280713613373,"sku":"ATINT-S55-RAD","price":1695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/airtec-billet-chargecooler-s55-02.webp?v=1781742886"},{"product_id":"airtec-chargecooler-radiator-b58","title":"AIRTEC Chargecooler Radiator — B58","description":"\u003cp\u003e\u003cstrong\u003eAIRTEC chargecooler radiator for the B58 — the front heat exchanger for the air-to-water charge-cooling loop.\u003c\/strong\u003e A larger, deeper pre-rad holds coolant temps down so charge cooling holds up under sustained boost.\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eTriple-pass core, 550mm × 470mm × 90mm — 23.3 litres against the OEM 7.7 litres (a 203% increase), nearly 60mm thicker. OEM mounts and coolant connectors; includes a stone guard and full fitting kit. Black powder-coat.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW B58 (F-chassis LCI) — 120i\/125i\/M140i (F20\/F21), 220i\/230i\/M240i (F22\/F23), 320i\/330i\/340i (F30\/F31\/F34), 420i\/430i\/440i (F32\/F33\/F36), 2014–2019. Confirm your chassis.\u003c\/p\u003e\n\u003cp\u003ePart no. ATRADBMW2. Heat-exchanger-side core of a B58 Stage 2 build — the \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e bundles parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"AIRTEC Motorsport","offers":[{"title":"Default Title","offer_id":43280713646141,"sku":"ATRADBMW2","price":1375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/airtec_b58_chargecooler_BLK01.jpg?v=1781742738"},{"product_id":"csf-hx-s55","title":"CSF Front-Mount Heat Exchanger — S55 (F80 M3 \/ F82 M4 \/ F87 M2 Competition)","description":"\u003cp\u003e\u003cstrong\u003eCSF front-mount heat exchanger for the S55 — F80 M3, F82\/F83 M4, and F87 M2 Competition.\u003c\/strong\u003e The S55 runs an air-to-water charge-cooling system, and heat rejection at the front exchanger is the bigger of its two weak points. The factory unit gives up once boost and ambient climb, letting intake temps creep across back-to-back pulls.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eA 2-row, 42mm dual core with B-Tube geometry run as a dual-pass design — the coolant crosses the core twice before it leaves. CNC quick-connect fittings, a removable aluminum rock guard, and an aluminum drain plug. Drop-in fit in the factory location.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS55 — F80 M3, F82 M4, F83 M4 Convertible, F87 M2 Competition. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the heat-exchanger-side core of an S55 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s55\"\u003eStage 2 Kit — S55\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280714793021,"sku":"CSF 8075","price":1105.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280714825789,"sku":"CSF 8075","price":905.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280714858557,"sku":"CSF 8075V","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/csf-hx-s55.webp?v=1781742886"},{"product_id":"csf-hx-s58","title":"CSF Front-Mount Heat Exchanger — S58 (G80 M3 \/ G82 M4 \/ G87 M2)","description":"\u003cp\u003e\u003cstrong\u003eCSF front-mount heat exchanger for the S58 — the heat-rejection side of the charge-air cooling system in the G8x M3\/M4 and G87 M2.\u003c\/strong\u003e The S58 cools its intake charge through a coolant loop; this front radiator is what removes that heat. The factory exchanger is a single-row, 35mm core with plastic tanks — fine stock, the limiter once the car is making more and seeing repeat pulls or track time.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eA 2-row, 42mm all-aluminum core with B-Tube geometry and TIG-welded aluminum tanks in place of the OEM plastic\/crimp construction. Ships with upper and lower rock guards and a transmission-cooler mounting kit, and drops into the factory location. CSF developed it over 100+ track hours.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eS58 — G80\/G81 M3 (incl. Competition, CS), G82\/G83 M4 (incl. Competition, CSL), and G87 M2 \/ M2 CS. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the heat-exchanger-side core of an S58 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-s58\"\u003eStage 2 Kit — S58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280714891325,"sku":"CSF 8215","price":1105.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280714924093,"sku":"CSF 8215","price":905.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280714956861,"sku":"CSF 8215","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/csf-hx-s58.webp?v=1781742886"},{"product_id":"csf-hx-b58-b48-fchassis","title":"CSF Triple-Pass Heat Exchanger — B58 \/ B48 (F2x \/ F3x BMW)","description":"\u003cp\u003e\u003cstrong\u003eCSF Triple-Pass heat exchanger for F2x\/F3x B58 and B48 — the radiator side of the charge-cooling loop.\u003c\/strong\u003e On these F-chassis cars the intake charge is cooled by a coolant circuit; this front exchanger cools the coolant that feeds the manifold's charge cooler. The factory unit is a single-row, ~27mm single-pass core that saturates under sustained load.\u003c\/p\u003e\n\u003ch3\u003eWhat CSF changes\u003c\/h3\u003e\n\u003cp\u003eA 68mm 2-row core — CSF calls it the largest 2-row they build — run as a triple-pass design, so the coolant crosses the core three times before returning to the manifold (the OEM unit and most aftermarket designs are single-pass). All-aluminum with B-Tube geometry, a detachable rock guard, and CNC quick-connect fittings. Installs with no modifications.\u003c\/p\u003e\n\u003ch3\u003eFinishes\u003c\/h3\u003e\n\u003cp\u003eWe spec these with a \u003cstrong\u003eThermal Heat Dispersion coating by default\u003c\/strong\u003e — an emissivity coating that helps the core radiate heat away, which is exactly what you want on a cooler. Prefer to skip it? Raw or Black are available for less. Choose above.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eBMW F2x\/F3x — 230i (B48), 330i \/ 330e (B48), 340i (B58), 430i (B48), 440i (B58), and M240i (B58), 2016–2021. BMW applications only. Confirm your chassis in the selector.\u003c\/p\u003e\n\u003cp\u003eThis is the heat-exchanger-side core of a B58\/B48 Stage 2 build. The \u003ca href=\"\/products\/stage-2-kit-b58\"\u003eStage 2 Kit — B58\u003c\/a\u003e packages the matched parts + calibration for 8% under à la carte.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Thermal Heat Dispersion","offer_id":43280714989629,"sku":"CSF 8131","price":985.0,"currency_code":"USD","in_stock":true},{"title":"Raw","offer_id":43280715022397,"sku":"CSF 8131","price":785.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43280715055165,"sku":"CSF 8131B","price":785.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/files\/CSF-f3x-f2x-b58-b48-triple-pass.jpg?v=1781742887"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/2553\/8109\/collections\/airtec_b58_chargecooler_BLK01.jpg?v=1781758266","url":"https:\/\/essewerks.com\/collections\/cooling.oembed","provider":"Esse Werks","version":"1.0","type":"link"}