Kit 3 Silicone Oil Breather Hoses REDOX for Citroën BX GTi 16 Valve XU9J4

Silicone Oil Breather Hoses for BX GTi 16 Valve

This REDOX 3-hose silicone kit is specifically designed for the crankcase breather system of the Citroën BX GTi 16 Valve equipped with the XU9J4 1.9L 16-valve engine developing 160 horsepower. Manufactured from multi-layer VMQ silicone with a specially treated inner layer to resist hydrocarbons and oil vapours, these hoses offer exceptional durability under demanding operating conditions.

The 3-ply 4mm wall thickness structure guarantees superior mechanical strength compared to original rubber hoses, which deteriorate rapidly under engine heat, oil vapours and thermal variations. VMQ silicone maintains its flexibility and sealing between -50°C and +200°C, where natural rubber becomes brittle or expands.

Vehicle Applications and Compatibility

This kit is compatible with all Citroën BX GTi 16 Valve models produced between July 1987 and December 1993, whether phase 1 (1987-1989, 7,427 units) or phase 2 (1989-1993, 8,013 units). The XU9J4 engine fitted to these models features a DOHC cylinder head derived from the Peugeot 205 T16, with hydraulic tappets and Bosch Motronic injection.

The crankcase breather system is essential on this high-performance 16-valve engine. It evacuates oil vapours and crankcase gases to the intake system to maintain optimal crankcase pressure and preserve seal longevity. Faulty hoses cause crankcase overpressure, oil leaks at cylinder head gaskets and rocker covers, and increased engine oil consumption.

Benefits of REDOX Permanent Stock

REDOX maintains permanent stock of this hose kit to ensure immediate availability. Unlike made-to-order parts requiring several weeks delivery time, your kit is dispatched the same day for orders placed before 5pm. Delivery is provided by GLS within 24 to 48 hours throughout the UK, enabling you to quickly restore your BX 16 Valve to optimal operating condition.

This immediate availability is particularly appreciated by youngtimer owners who cannot afford to have their vehicle immobilised for weeks awaiting parts. Permanent stock also avoids frustrating shortages on these collector vehicles for which original parts are no longer available from Citroën.

Key Technical Specifications

• Material: Automotive-grade VMQ silicone with special hydrocarbon inner layer
• Wall thickness: 4mm with reinforced 3-ply structure
• Temperature range: -50°C to +200°C continuous operation
• Nominal pressure: 3 bar
• Resistance: Hydrocarbons, oil vapours, ozone, UV, thermal aging
• Stainless steel clips included in kit
• Available colours: Blue, Black, Red
• Warranty: Lifetime on REDOX hoses
• Service life: Minimum 15 years under normal use

The VMQ silicone selected by REDOX comes from the family of high-performance silicone elastomers, offering exceptional mechanical properties maintained over time. Unlike the economical natural rubber used in original equipment, this silicone does not harden, crack or lose elasticity even after thousands of hours of exposure to engine heat.

Frequently Asked Questions

Why replace original rubber hoses with silicone?

The natural rubber hoses originally fitted to the BX GTi 16 Valve are designed for a maximum service life of 5 to 7 years. After 30 to 35 years, these hoses are systematically degraded: hardened, cracked, swollen or completely perforated. Natural rubber tolerates high engine bay temperatures poorly and degrades on contact with oil vapours. VMQ silicone offers 3 times the service life and maintains its mechanical properties over time.

Is this kit compatible with all BX 16 Valve models?

Yes, this kit suits all Citroën BX GTi 16 Valve and BX 16 Valve (without GTi badge after 1989) equipped with the 160 horsepower XU9J4 engine, produced between 1987 and 1993. All 15,440 units produced share the same engine oil breather system. The kit comprises the 3 hoses of the crankcase breather circuit as exact replacement for original hoses.

Are clips supplied with the kit?

Yes, all stainless steel clips required for installation are included in the kit. We recommend systematically replacing the original clips which lose their clamping tension over time. The supplied clips are precisely sized to ensure perfect sealing without crushing the silicone hoses.

Which colour should I choose for my hoses?

The colour choice is purely aesthetic and does not affect performance. Black offers a discreet original appearance, red corresponds to motorsport colour codes, and blue brings a distinctive touch to the engine bay. All three colours use exactly the same VMQ silicone composition with identical mechanical properties and the same lifetime warranty.

Does fitting require specialist tools?

No, replacing the breather hoses on the BX GTi 16 Valve requires no special tools. A standard set of spanners and screwdrivers suffices to loosen existing clips, remove old hoses, install new ones and tighten the new clips. The operation takes approximately 30 to 45 minutes for a competent DIY mechanic. We recommend replacing hoses when the engine is cold for greater working comfort.

Is the lifetime warranty truly unlimited in duration?

Yes, REDOX provides a lifetime warranty on its silicone hoses against any material or manufacturing defect. This warranty covers the entire vehicle service life, without mileage or time limitation. If a REDOX hose fails under normal use (excluding external mechanical damage), it will be replaced free of charge. This warranty demonstrates our absolute confidence in the quality and durability of the selected VMQ silicone.

Can I use these hoses on track or in competition?

Absolutely, REDOX silicone hoses are used in motorsport, rally, drift and circuit racing. The thermal resistance up to 200°C and mechanical strength of the 3-ply VMQ silicone enable use under the most demanding conditions. Many tuners and racing teams trust REDOX hoses to equip their competition vehicles. The lifetime warranty remains valid even under intensive use.

How long until I receive my hose kit?

For orders placed before 5pm, the kit is dispatched the same day from our French warehouse. GLS delivery occurs within 24 to 48 hours to the UK. You receive a tracking number by email as soon as the shipment is dispatched. Permanent stock enables us to guarantee this immediate availability year-round, unlike made-to-order parts requiring several weeks waiting time.