do88 BMW B58 Fuel Rail for Charge Cooler Manifold

do88's B58 Charge Cooler Manifold (Gen 1 or Gen 2) is pre-configured to accommodate auxiliary port fuel injection, and this custom-made fuel rail is the component that makes that possible. Featuring female AN-8 threads, it installs directly to the manifold's outlet tank, engineered specifically for compatibility with Injector Dynamics ID1050x-34-14 or Bosch EV14 Compact (K) fuel injectors.

If you're not using port fuel injection, do88's manifold already includes injector blanking plugs as standard, so this rail is genuinely optional rather than a required companion purchase. It's aimed specifically at high-power builds or ethanol-based fuel setups where the factory direct injection system becomes a limiting factor, without resorting to port injection spacers, which position injectors at unfavourable angles and risk fuel puddling on the intake runner walls.

Works with: do88's B58 Charge Cooler Manifold (Gen 1 or Gen 2, standard or MERA), sold separately. Compatible with Injector Dynamics ID1050x-34-14 or Bosch EV14 Compact (K) injectors only.

Important: fitment alongside the OE engine cover, when running this auxiliary fuel rail, has only been confirmed on the BMW 340i F30/F31. For other applications, some modification to the sound-dampening material and engine cover mounting pins (longer pins included in the manifold kit) may be required, confirm exact fitment for your specific model before ordering.

Why Choose This Fuel Rail

• Purpose-built to install directly to do88's Charge Cooler Manifold outlet tank
• Genuine AN-8 threaded connections for a proper high-flow fuel line setup
• Engineered specifically for ID1050x-34-14 or Bosch EV14 Compact (K) injectors
• Avoids the fuel puddling and angle issues caused by generic port injection spacers
• Only needed if you're running auxiliary port fuel injection, not required otherwise

Compatibility

• do88 B58 Charge Cooler Manifold, Gen 1 (F-Series) or Gen 2 (G-Series/Supra), standard or MERA

Note: requires compatible injectors (ID1050x-34-14 or Bosch EV14 Compact/K). Engine cover fitment with this rail installed has only been confirmed on the BMW 340i F30/F31, other models may require modification.