VTT BMW B58 Gen1 Silicone Coolant Hose Kit - 6-Ply Radiator/Expansion/Vent Lines with Black Billet Quick-Connects | F20 F21 F22 F23 F30 F31 F32 F33 F36 (F2x/F3x) | M140i M240i 340i 440i | Radiator Hose Set/Water Hose/Cooling Pipe Upgrade Replacement

B58 Gen1 Cooling Hose Set with Billet Alloy Quick‑Connects for F2x and F3x

Say goodbye to brittle plastic clips and tired rubber plumbing on your Gen1 B58. This premium silicone cooling hose set replaces the factory water hoses and couplers on F20 F21 F22 F23 F30 F31 F32 F33 F36 models, delivering rock‑solid reliability, OE‑style fit and a clean, factory look. Each moulded hose uses thick 6‑ply silicone for heat and pressure resilience, paired with black anodised 6061‑T6 billet aluminium ends for a secure, leak‑free connection.

At MJ Modifications we have installed these on multiple M140i, M240i, 340i and 440i builds. Feedback has been excellent, with customers praising the quality of the alloy connectors, the precise routing and the confidence of ditching the common B58 coolant weak points. Ideal for daily drivers, tuned street cars and track toys that demand dependable cooling system hardware.

Why upgrade your B58 cooling lines

• Billet alloy quick‑connect fittings anodised black for corrosion resistance and strength
• 6‑ply moulded silicone tubing for superior heat tolerance and pressure stability
• OE‑shape routing for straightforward installation and proper clearance
• Direct swap for fragile plastic ends and ageing rubber coolant pipes
• Reduces the risk of coolant leaks, overheating and roadside failures
• Perfect for preventative maintenance when refreshing the radiator, thermostat or header tank

What you can order

Select a complete package or individual pieces to suit your maintenance plan. All pieces feature billet connectors and 6‑ply silicone construction.

Full Set

• Upper radiator hose — OEM cross‑ref 17 12 8 616 548
• Lower radiator hose — OEM cross‑ref 17 12 8 633 482
• Expansion or header tank hose — OEM cross‑ref 17 12 8 620 944
• Upper vent or bleed hose — OEM cross‑ref 17 12 8 616 555

Radiator Pair

• Upper radiator hose — OEM cross‑ref 17 12 8 616 548
• Lower radiator hose — OEM cross‑ref 17 12 8 633 482

Individual Pieces

• Upper radiator hose — OEM cross‑ref 17 12 8 616 548
• Lower radiator hose — OEM cross‑ref 17 12 8 633 482
• Expansion or header tank hose — OEM cross‑ref 17 12 8 620 944
• Upper vent or bleed hose — OEM cross‑ref 17 12 8 616 555

Vehicle compatibility — Gen1 B58 on F‑series

Designed for most F2x and F3x applications with the first‑generation B58 engine.

1 Series

• F20 LCI 09/2015 to 06/2019 — M140i and xDrive
• F21 LCI 09/2015 to 06/2019 — M140i and xDrive

2 Series

• F22 09/2015 to 06/2017 — M240i and xDrive
• F22 LCI 09/2016 to 12/2019 — M240i and xDrive
• F23 09/2015 to 06/2017 — M240i and xDrive
• F23 LCI 10/2016 to 12/2019 — M240i and xDrive

3 Series

• F30 LCI 10/2014 to 10/2018 — 340i and xDrive
• F31 LCI 10/2014 to 06/2019 — 340i and xDrive
• F34 GT LCI 09/2015 to 12/2019 — 340i and xDrive

4 Series

• F32 04/2015 to 02/2017 — 440i and xDrive
• F32 LCI 05/2016 to 12/2019 — 440i and xDrive
• F33 03/2015 to 02/2017 — 440i and xDrive
• F33 LCI 05/2016 to 12/2019 — 440i and xDrive
• F36 Gran Coupé 03/2015 to 02/2017 — 440i and xDrive
• F36 Gran Coupé LCI 05/2016 to 12/2019 — 440i and xDrive

Note: Not test‑fitted on every variant. Access can be tight on some models and surrounding components may need to be moved for installation.

Installation and support

Professional fitting recommended. MJ Modifications in Warwickshire can supply, install, pressure test and bleed your cooling system for a hassle‑free experience. Request a fitting quote at info@mjmodifications.co.uk.

Fitment check before dispatch

Add your UK registration or the last 7 digits of your VIN at checkout and we will verify compatibility before shipping.

Part number

VTT-B58-COOLANT

Brand

VTT — Vargas Turbocharger Technologies

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