What it is
This is a complete side-mount intercooler (SMIC) upgrade kit for the VW Mk4 BEW 1.9L TDI, manufactured by Darkside Development (a third-party UK performance brand, not a KermaTDI-branded product).
What's included
Key compatibility fact
This kit retains the factory EGR and ASV (auxiliary shut-off valve) systems — it's not an emissions-delete product. It's a direct upgrade to the charge-air piping and intercooler, not a system that requires removing emissions components.
Fitment
2004–2006 VW Mk4 Golf, Jetta, and Jetta Wagon, BEW engine.
Availability
Limited supply.
Installation resource
KermaTDI provides a separate pipework fitting tips PDF for this kit.
Common questions
Does installing this kit require removing my EGR system? No — it's designed to retain both the factory EGR and ASV systems intact.
Is this a KermaTDI-branded intercooler, or a different manufacturer? Manufactured by Darkside Development, a UK-based brand; KermaTDI sells it, but it's not a Kerma in-house product.
Does this kit include a MAP sensor? It includes a MAP sensor boss (mounting provision) on the intercooler itself, not a MAP sensor. Check separately whether your MAP sensor is included or needs to be reused/purchased.
Does this kit fit a 2003 BEW Golf? No — fitment starts at 2004, consistent with BEW engine production, which began in 2004.
