1 1

Darkside Developments

BMW N47N/N47S1 Intake Manifold Blanking Plug - Swirl Flap/Swirl Valve Delete Block-Off Bung, Runner Butterfly Inlet Seal Cap for 2.0d Diesel, CNC Billet Aluminium

BMW N47N/N47S1 Intake Manifold Blanking Plug - Swirl Flap/Swirl Valve Delete Block-Off Bung, Runner Butterfly Inlet Seal Cap for 2.0d Diesel, CNC Billet Aluminium

£18.00
£18.00
Sale Sold out
Shipping calculated at checkout.

Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Intake Manifold Blanking Bung for BMW N47N / N47S1

Protect your BMW diesel from costly damage with this precision block-off plug that seals the aperture left in the inlet manifold once the factory intake runner flap mechanism has been removed. Engineered from billet aluminium and finished to an exceptionally high standard, it delivers a secure, leak-tight seal and long-term reliability for N47N and N47S1 engines.

Why choose this reliability upgrade

  • Safeguards the engine by preventing fragments from worn runner flap components entering the cylinders
  • Direct fit for the inlet seal carrier on BMW N47N / N47S1 diesel engines
  • Precision CNC machined from billet aluminium for strength, accuracy and consistency
  • Dual O-rings included for a positive seal and confidence against boost and vacuum leaks
  • Corrosion resistant and heat tolerant for dependable performance in harsh conditions
  • A proven preventative mod for daily drivers and enthusiast builds alike

What you receive

  • 1 x Intake manifold blanking plug
  • 2 x O-rings

Tried and trusted by MJ Modifications

We have fitted this blanking bung on numerous N47 variants in-house and it has been a rock-solid solution. Customers consistently report peace of mind, a tidy install and a clean, leak-free seal after removing the intake flap assembly.

Fitting and support

Professional installation is available at MJ Modifications in Warwickshire. For a fitting quote or technical advice, email info@mjmodifications.co.uk.

Engine compatibility

Designed for BMW N47N and N47S1 diesel engines that have had the intake runner flap system removed.

Search-friendly terms

BMW N47 intake manifold blank, inlet manifold bung, manifold runner flap removal plug, swirl valve delete bung, runner butterfly block-off cap, diesel intake port blanking plug, BMW 2.0d manifold seal plug, billet aluminium manifold plug, N47N inlet blank, N47S1 intake block-off, manifold aperture bung, EGR soot-safe manifold plug.

View full details