Ford Sierra Sapphire Cosworth 4WD (without Dump Valve) Silicone Boost Hose Kit

Turbo performance depends on more than just the turbocharger itself. Maintaining a sealed, efficient boost system is vital for consistent performance and long-term engine reliability. Developed specifically for Ford Sierra Sapphire Cosworth 4WD models without a dump valve, this PAFCLASSIC® Silicone Boost Hose Kit replaces ageing factory hoses with premium reinforced silicone components.

The kit includes 3 silicone boost hoses manufactured from high-quality 3-ply silicone reinforced with polyester textile fibres. Designed to cope with the demanding environment of a turbocharged engine, these hoses provide excellent resistance to elevated temperatures, boost pressure, and long-term material fatigue while retaining their flexibility and shape over years of use.

Designed as a direct replacement, the kit fits seamlessly into the original boost system without requiring modifications. Whether you're carrying out a faithful restoration, maintaining a cherished Cosworth, or building a reliable Fast Road car, these hoses deliver dependable performance together with a clean, premium engine bay finish.

Manufactured in England, PAFCLASSIC® silicone hoses are available in a choice of colours, allowing you to personalise your vehicle while benefiting from components engineered for exceptional durability.

Technical Specifications

• Compatibility: Ford Sierra Sapphire Cosworth 4WD (without dump valve)
• Type: Silicone Boost Hose Kit
• Contents: 3 silicone hoses
• Construction: 3-ply silicone reinforced with polyester textile fibres
• Operating Temperature: -50°C to +180°C
• Installation: Direct replacement
• Manufactured in: England

Customisation

AVAILABLE COLOURS

• Black
• Blue
• Red
• Green
• Orange
• White

Please specify your preferred colour when placing your order.

PAFCLASSIC® Logo

The kit is available in two finish options:

• With PAFCLASSIC® Logo for a more exclusive finish.
• Without PAFCLASSIC® Logo for a more discreet, OEM-inspired appearance.

STAINLESS STEEL CLIP KIT

You can choose to have these hoses supplied:

• With Stainless Steel Clip Kit
• Without Clip Kit

Complementary Products

Matching silicone radiator hose kits and silicone ancillary hose kits for the Ford Sierra Sapphire Cosworth 4WD are also available to complete the refurbishment of your engine bay. See references PAFSIECOS4WDRAD and PAFSIECOSAWD.

Manufacturing & Lead Time

Each kit is manufactured exclusively to order.

• Manufactured in: England
• Average production time: 10 working days

Why Choose PAFCLASSIC®?

Turbocharged engines generate continuous heat, pressure, and vibration, placing considerable strain on every component within the boost system. PAFCLASSIC® silicone hoses are engineered with reinforced multi-layer construction to withstand these demanding conditions, providing superior durability and long-term sealing performance compared to ageing factory rubber hoses.

Developed specifically for the Ford Sierra Sapphire Cosworth 4WD without a dump valve, this boost hose kit combines precise OEM-style fitment, premium British manufacturing, and customisation options for enthusiasts who expect lasting quality. Whether preserving an original Cosworth or enhancing a regularly driven classic, PAFCLASSIC® products are built to deliver dependable performance while respecting the heritage of these iconic performance cars.