Airtec Motorsport Two-Piece Breather System for Ford Focus Mk2 ST & RS
Tuning levels on the Mk2 Ford Focus RS and ST push the standard Ford oil filter housing to its limit — the fragile clip-on diaphragm inside is prone to splitting or leaking. Airtec's two-piece breather kit addresses this directly.
The kit includes a modified and baffled Ford oil filter housing (with a new oil filter element and seals for straightforward fitting), an Airtec oil separator with a billet mounting block and laser-cut fitting washer that doubles as a drilling template for the battery tray, and custom-made Pro Hoses oil-resistant fluoro silicone hoses shaped to fit the engine bay far better than straight hoses, complete with stainless steel jubilee clips.
Unlike the factory system, which recirculates fumes back into the intake, this kit vents them to atmosphere for genuinely improved engine breathing. Two purchase options are available: Exchange, where your old oil filter housing is required before a kit is sent; or Outright, where you receive the full kit and can optionally return your old housing for a partial refund — useful for international customers or those who want to fit first and return the old part after.
Key Features
- Modified, baffled Ford oil filter housing with new filter element and seals
- Airtec oil separator with billet mounting block
- Laser-cut fitting washer doubles as a drilling template
- Custom-shaped Pro Hoses fluoro silicone hoses with stainless jubilee clips
- Vents fumes to atmosphere rather than recirculating them
Please Note
- Available as Exchange (old housing required first) or Outright (full kit, optional partial refund on return of old housing)
- Increasing the engine's breathing capacity can reveal pre-existing wear or health issues previously masked by the restrictive factory system — some owners have reported a noticeable increase in fumes or smoke after fitting, which usually points to an underlying engine condition rather than a fault with the kit
Compatible With
- Ford Ford Focus ST (MK2)
- Ford Ford Focus RS (MK2)
