Intake manifold swirl flap removal kit for OPEL VAUXHALL / FIAT / ALFA / SAAB + EGR blanking plate
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How to: Fix swirl flaps & save your engine (Ford Duratec HE, Mondeo/Focus/et al) - YouTube
For Opel 1.9 CDTI Signum Vectra Zafira Swirl Flap Kit Caps Delete Kit|Intake Manifold| - AliExpress
What are diesel BMW swirl flaps? Let us explain
Swirl flap - Wikipedia
Swirl Flap Repair and EGR Blanking on Astra H 1.9 CDTI : 5 Steps - Instructables
Inlet manifold swirl flap removal kit for Opel, Vauxhall 1.6 16V Z16XE, Z16XEP petrol engines