Radium Engineering Fuel Rails, GM Vortec 8100 L18 Big Block

Radium Fuel Rails, GM Vortec 8100 L18 Big Block

Application: GM Vortec 8100 (L18) 8.1L big block
Part Type: Billet aluminium fuel rails (pair)
Part Number: 20-0862

The Radium 20-0862 Fuel Rails replace the factory rails on the GM Vortec 8100 (L18) 8.1L big block. They are CNC machined from 6061 aluminium, black anodised and laser etched, and each rail has six 8AN ORB ports – twelve in all – for flexible feed, return, regulator, damper and gauge plumbing.

These are upgrade rails for OEM or OEM-equivalent injectors. Matching Radium plumbing kits turn them into a plug-and-play installation: 20-1062 for 2001-2003 return-style systems and 20-1162 for 2004-2010 returnless systems.

Key Features

• 12 Ports: Six 8AN ORB (3/4in-16) ports per rail
• Billet Construction: CNC machined 6061 aluminium, black anodised and laser etched
• OEM Injectors: Suits OEM GM injectors and equivalents with 14mm upper O-rings
• Stainless Mounting: Stainless steel mounting feet and hardware
• Plug-and-Play Kits: Matching year-specific plumbing kits available

What's Included

• Anodised billet aluminium fuel rail (x2)
• Stainless steel mounting feet (x4)
• Stainless steel mounting hardware

Optional Parts

• Radium Fuel Rail Plumbing Kit, GM Vortec 8100 L18 Big Block (2001-2003) (20-1062) – 2001-2003 return-style plumbing kit with adjustable regulator and gauge
• Radium Fuel Rail Plumbing Kit, GM Vortec 8100 L18 Big Block (2004-2010) (20-1162) – 2004-2010 returnless plumbing kit with direct-mount pulse damper

Important Notes

• This is an upgrade rail – OEM or OEM-equivalent injectors must be used (same height and the same upper and lower O-ring diameters and styles)
• Radium does not make injector recommendations – consult your tuner and the injector manufacturer
• The rails do not come with adapter fittings – fittings, regulators, pulse dampers and gauges are sold separately
• Allow ample clearance around the ports for larger accessories such as regulators, gauges and pulse dampers
• The rails' injector clip features suit smaller Bosch-style clips, not GM clips (the clips are optional for operation)
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Chevrolet / GMC C3500HD (2001-2002)
• Chevrolet Suburban XL 2500 / GMC Yukon XL 2500 (2001-2006)
• Chevrolet Silverado / GMC Sierra 2500HD and 3500HD (2001-2007)
• Chevrolet Kodiak / GMC TopKick (2001-2010)
• Chevrolet Avalanche 2500 (2002-2006)
• Workhorse Class A motorhomes W20, W22, W24, W25
• T-98 Kombat armoured vehicle
• Malibu Wakesetter 23 LSV, 25 LSV and 247 LSV boats
• Mastercraft X-45, ProStar 197 and ProStar 214 boats

If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.

Installation

We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.

Note

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.