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Not sure which one? Ask us to confirm fitment first →Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.
| Manufacturer | Funk Motorsport |
|---|---|
| Product Type | Turbo Blanket / Turbo Heat Shield |
| Vehicle Fitment | BMW 420i (B48 engine) |
| Available Finishes | Titanium, Carbon Fibre |
| Construction | Multi-layer removable design |
| Application | Turbocharger thermal insulation for BMW 4 Series B48 |
The Funk Motorsport turbo blanket is engineered for the BMW 420i with the B48 engine, addressing the specific heat management challenges faced by modern turbocharged 4 Series models. By insulating the turbocharger, it helps reduce engine bay temperatures, supporting more stable turbo operation and protecting sensitive engine components from heat exposure. This is especially valuable for owners who demand reliable performance in daily driving, spirited road use, or on track.
Turbochargers generate intense heat that can radiate into the engine bay, risking heat soak and potential damage to wiring, hoses, and intake components. The Funk Motorsport turbo blanket is designed to contain this heat within the turbo housing, helping to maintain lower underbonnet temperatures and more consistent intake air temperatures. This supports overall engine reliability and can help preserve power output during demanding conditions.
This turbo blanket is ideal for BMW 420i owners who:
For those building a reliable daily driver, a performance-focused street car, or a track-ready 4 Series, this turbo blanket helps manage thermal load and supports long-term engine health.
The Funk Motorsport turbo blanket for the BMW 420i B48 engine is available in both Titanium and Carbon Fibre finishes. Each blanket utilises a robust multi-layer construction, engineered to provide advanced thermal insulation compared to standard alternatives. The removable design is a unique feature, allowing for easy access during turbo maintenance while preserving the integrity of the blanket. This product is developed with input from motorsport and performance applications, ensuring suitability for demanding environments.
This turbo blanket is designed specifically for the BMW 420i equipped with the B48 engine and factory turbocharger. Installation can be performed by experienced enthusiasts with basic engine bay knowledge, but professional fitting is recommended to ensure correct placement and maximum effectiveness. Always verify compatibility with your specific model year and turbo configuration before purchase. If your vehicle features a non-standard or aftermarket turbo, confirm fitment before ordering.
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
By containing turbo heat, the blanket helps maintain lower engine bay temperatures, supporting more consistent turbo operation and reducing the risk of heat-related component damage.
This product is designed for the BMW 420i fitted with the B48 turbocharged engine and factory turbo. Compatibility with other models or aftermarket turbo setups should be verified before purchase.
Both finishes offer the same level of thermal protection. The choice is primarily aesthetic, allowing you to match your engine bay style preferences.
Yes, Funk Motorsport's design allows the blanket to be removed and refitted during routine turbo servicing, unlike many competitor products.
While installation can be performed by experienced enthusiasts, professional fitting is recommended to ensure correct placement and maximum effectiveness.
This blanket is tailored for the factory B48 turbo. If you have a non-standard or aftermarket turbo, please confirm dimensions and fitment before ordering.
Check dimensions, mounting points, clearance and any wiring or hose requirements against your setup before ordering.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
