{"product_id":"bmw-m340i-m440i-330i-b48-b58-heat-exchanger-upgrade-g-series","title":"BMW M340i \/ M440i \/ 330i B48 \/ B58 Heat Exchanger Upgrade (G-Series)","description":"\u003cp\u003eUpgraded heat exchanger for G-series B48\/B58 cars — the water-to-air charge cooler that actually controls your intake temps. Note: this is the water-to-air unit, not a front-mount air-to-air intercooler. 30% reorder rate from a TUV-verified cooling specialist.\u003c\/p\u003e\u003cp\u003eWater-to-air heat exchanger \/ charge cooler upgrade — it improves the factory water-to-air circuit rather than replacing it with a front-mount. CE certified (model NA-HE-1005-SM-BK), engineered for B58 Gen 2 G20 fitment. If your tuned B58 pulls timing on hot days, this is why.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e BMW G-Series M340i, M440i, 330i with B48\/B58 engines (B58 Gen 2 G20 confirmed). Confirm your year, model, trim and VIN before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSafety:\u003c\/strong\u003e Cooling upgrades require draining and refilling coolant — the system must be properly bled of air afterward to avoid overheating. Professional installation is recommended. Verify hose routing and clamp torque before driving.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFactory-direct from China:\u003c\/strong\u003e Made in China and sourced straight from the vetted factory — no middleman markup. Ships from our factory partner with tracking provided. Delivery times vary by destination.\u003c\/p\u003e","brand":"StealthTorque","offers":[{"title":"Default Title","offer_id":52214264529191,"sku":"ST-CLG-001","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/8533\/2263\/files\/Hf95df1ccac9a4fa386faec33b88c45aeP.jpg?v=1790966700","url":"https:\/\/stealthtorque.store\/products\/bmw-m340i-m440i-330i-b48-b58-heat-exchanger-upgrade-g-series","provider":"StealthTorque","version":"1.0","type":"link"}