2-Piece Silicone Boost Hose Kit REDOX Alfa Romeo 147 GT 1.9 JTDM 150hp

High-Performance Silicone Turbo Hoses for Alfa Romeo 147 and GT

The REDOX kit includes 2 reinforced boost system silicone hoses, specifically designed to replace factory rubber hoses on Alfa Romeo 147 and GT equipped with the 1.9 JTDM 150hp diesel engine (engine code 937A5000). These hoses ensure the connection between the turbocharger and the air-to-air intercooler, a circuit subject to extreme thermal and mechanical stress.

Advanced Technical Specifications

REDOX hoses are manufactured from VMQ silicone (polysiloxane) with a specially formulated inner layer resistant to diesel engine hydrocarbons. The 4-ply construction with 5mm wall thickness guarantees exceptional mechanical strength against boost pressure whilst maintaining the flexibility required for installation. These hoses withstand a temperature range of -50°C to +180°C, vastly superior to factory rubber hoses which degrade rapidly under engine bay heat.

Verified Vehicle Compatibility

This kit fits perfectly on the following models:

Alfa Romeo 147 (937):

• 1.9 JTD 115hp (937A2000) - 2001-2010
• 1.9 JTDM 8V 120hp (937A3000) - 2005-2010
• 1.9 JTDM 16V 150hp (937A5000) - 2004-2010

Alfa Romeo GT (937):

• 1.9 JTD 16V 150hp - 2003-2010
• 1.9 JTDM 16V 150hp (937A5000) - 2004-2010

The hoses are also compatible with the Ducati Corse and Q2 sport versions.

Replaced OEM Part Numbers

These REDOX hoses replace the following Alfa Romeo factory part numbers:

• 51709470 (lower turbo-intercooler hose)
• 50508080 / 50508081 (complete boost system)
• 51702364 / 60689788 (variants depending on year)

Why Replace Factory Hoses?

Factory rubber hoses on JTD/JTDM engines are a well-known weak point. Natural rubber ages prematurely due to the combined effect of turbo heat, pressure fluctuations and hydrocarbon vapours. Classic symptoms include: characteristic whistling during acceleration, progressive power loss, excessive black smoke, and in severe cases, complete hose failure resulting in breakdown.

REDOX silicone permanently eliminates these issues through exceptional molecular stability and superior chemical resistance.

Permanent Stock and Express Delivery

Unlike typical market lead times, REDOX maintains permanent stock of this popular kit in our French warehouse. Order before 5pm for same-day dispatch. Fast GLS delivery in 24-48h throughout mainland UK and Europe. Available in three colours: blue, black or red to customise your engine bay according to your aesthetic preferences.

Installation and Hose Clamps

This kit includes only the 2 silicone hoses. Hose clamps are not supplied - we recommend using high-quality stainless steel full-band clamps for optimal clamping. Installation requires no modifications and is performed as direct replacement of factory hoses.

REDOX Lifetime Warranty

Every REDOX silicone hose kit comes with our unconditional lifetime warranty, testament to our absolute confidence in the quality and durability of our products. This warranty covers the entire vehicle lifespan with no mileage limitation.

FREQUENTLY ASKED QUESTIONS

Which hoses are included in this kit for Alfa Romeo 147 GT 1.9 JTDM?
The kit comprises 2 hoses: the lower hose from turbo to intercooler and the upper hose from intercooler to intake. These two hoses form the complete compressed air boost system on 1.9 JTD/JTDM engines.

Do these silicone hoses also fit 115hp and 120hp versions?
Yes, this kit is compatible with all 1.9 JTD and JTDM engines of the 937 family, whether they develop 115hp, 120hp, 140hp or 150hp. The boost system remains identical across the entire range.

Are hose clamps supplied with the hoses?
No, clamps are not included in the kit. We advise using aviation-type stainless steel clamps (T-bolt) or full-band clamps to guarantee uniform and durable clamping around the entire circumference.

What's the difference between REDOX silicone and factory rubber hoses?
VMQ silicone resists extreme temperatures far better (-50°C to +180°C versus -40°C to +100°C for rubber). It doesn't expand under pressure, doesn't crack over time and resists diesel hydrocarbons perfectly thanks to its special inner layer.

Can these hoses be fitted to Alfa Romeo 156 1.9 JTD?
Hoses for Alfa 156 use a slightly different routing. We offer a specific kit for 156 models. Please check compatibility before ordering or contact our technical service for confirmation.

Does installation require special tools?
No, replacement is performed with standard tools: screwdriver or spanner to loosen/tighten clamps. It's recommended to lubricate ends slightly with soap or silicone lubricant to facilitate fitting.

Why choose silicone rather than keeping factory hoses?
Rubber hoses on JTD/JTDM are known for poor durability (often replaced every 60-80,000 km). REDOX silicone eliminates this problem permanently with lifetime warranty, whilst also improving engine response through absence of expansion under pressure.

Are the hoses available immediately?
Yes, this kit is part of our permanent stock. Order before 5pm = same-day dispatch. GLS delivery in 24-48h in UK and Europe.