Blow Off Valve for Volkswagen and Audi 1.8T 2.7T Recirculation Diverter Aluminium BOV1173
Upgrade your VW or Audi turbo setup with the VOLM VW Audi 1.8T 2.7T Turbo Blow Off Valve (BOV1173). Built from hard anodized T6 aviation aluminum and designed as a recirculation diverter, this valve replaces the OEM plastic diverter to deliver faster throttle response, reduced turbo lag, and longer life under boost. Unlike a wastegate that vents boost to the atmosphere, this BOV redirects charged air back into the intake, helping prevent turbo stall and maintaining stable boost during shifts and aggressive driving. It’s engineered for durability in hot under-hood conditions and easy installation, with multiple springs and spacers to tailor pressure and feel. Vehicle compatibility charts are for reference only—please verify fitment with your OEM specifications. All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty. Since 2002, intercyprus.com has stood for dependable quality and reliable service.
Benefits & Tips
- Sharper throttle response and smoother boost control by recirculating air back into the intake, reducing lag on 1.8T and 2.7T engines.
- Customizable boost feel with color-coded springs (GREEN 5-15 PSI, Yellow 15-23 PSI, BLUE 23-30 PSI, RED +30 PSI) and 2mm spacers included to fine-tune small pressure changes.
- Durable, corrosion-resistant build thanks to Hard Anodized surface and aerospace-grade aluminum, designed to handle repeated boost and heat cycles.
Product specifications
- Brand: VOLM
- Model Name: BOV1173
- Item Type: Turbo, turbocharger
- Material: Aluminium (T6 aviation aluminum), Hard anodized
- Surface treatment: Hard anodized
- Displacement: universal
- Spring options: GREEN (5-15 PSI), Yellow (15-23 PSI), BLUE (23-30 PSI), RED (+30 PSI); 2mm spacers provided
- Included spacers: 2mm spacers for small spring pressure adjustments
- Compatibility notes: For 99-06 Audi TT; 00-06 Audi TT Quattro; Audi A4 98-05; A4 Quattro 98-05; 01-05 Audi Allroad Quattro; 00-04 Audi A6 Quattro; 00-02 Audi S4; Volkswagen Beetle 99-05; Volkswagen Golf 00-05; Volkswagen Jetta 00-05; requires 2 sets for 2.7L bi-turbo models
- OEM reference: Designed to replace OEM diverter valve on VW/Audi 1.8T, 2.2T, 2.7T and 4.2T
- Origin: Mainland China
- Certification: ISO9000
- Important note: Vehicle Compatibility Charts are FOR REFERENCE ONLY. Check your OEM part to match your needs.
Package includes:
- 1 x Turbo Blow Off Valve (BOV1173)
- 2 x 2mm spacers
Warnings/Reminders
- For 2.7L bi-turbo models, you will need two valve units to achieve proper functionality.
- Charts are reference tools—confirm fit with your vehicle’s OEM specifications before installation.
- Recirculation valve design is intended for performance with OEM or upgraded turbo setups; ensure compatibility with your specific engine configuration.
Language support: Not specified in the product data.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Since 2002, intercyprus.com has been a trusted source for reliable automotive parts and service.