SKU: 5800 / UPC: 9328022009568
GFB VAG MK5/6 Boost Gauge Tap for VW Golf GTI – Clean Manifold Pressure Port for Accurate Boost Monitoring
Discover the GFB VAG MK5/6 Boost Gauge Tap (Part #5800), the direct solution for adding a reliable manifold pressure reference port to your 2.0 TSI/FSI engine. This boost gauge tap installs in seconds without tools, delivering precise boost readings that keep your turbo setup responsive and your drive data trustworthy. Unlike makeshift adapters that clutter the engine bay or risk leaks, this tap clips directly into the existing manifold port, ensuring a secure fit that withstands daily commutes and track days alike.
Engineers at Go Fast Bits designed this tap to eliminate common issues with aftermarket boost monitoring. The forward-facing 1/4" hose barb simplifies routing and prevents oil from collecting in the line, which means cleaner signals to your gauge and fewer maintenance headaches. Built from billet 6061-T6 aluminum with a brass barb and oil-resistant Viton O-rings, it resists corrosion and holds up under high-pressure conditions. The black anodized finish and laser-engraved GFB logo blend seamlessly into your VW's engine bay for a factory-fresh look.
Key Specifications
- Material: Billet 6061-T6 aluminum body, brass hose barb
- Connections: 1/4" hose barb (forward-facing for optimal routing)
- Seals: Two Viton O-rings (oil-impervious for long-term reliability)
- Finish: Black anodized with laser-engraved GFB logo
- Manufacturing: CNC machined in Australia under ISO 9001 quality standards
- Part Number: 5800
- UPC: 9328022009568
- Weight: 0.09 lbs (0.04 kg)
- Shipping Details: Compact packaging measures approximately 4" x 3" x 1" (fits standard small parcel shipping exact dimensions may vary by retailer)
What's Included in Your Purchase
- One GFB Boost Gauge Tap (pre-assembled and ready to install)
- Two Viton O-rings for secure sealing
- Installation instructions (simple 10-second, tool-free process fully reversible with no residue left behind)
No additional hardware required everything you need arrives in one package, so you can mount it right away and get back to tuning.
Vehicle Fitment
This GFB Boost Gauge Tap fits select Volkswagen models with 2.0 TFSI/TSI engines (EA113 and EA888 Gen 1/2). Confirm compatibility with your setup:
- VW Golf GTI Mk5 (2004-2009): 2.0 TFSI (147 kW / 200 hp)
- VW Golf GTI Mk5 (2004-2009): 2.0 TFSI (169 kW / 230 hp)
- VW Golf GTI Mk6 (2008-2013): 2.0 TSI (various outputs)
Not compatible with later EA888 Gen 3 engines or non-GTI variants without manifold modifications. Always verify your engine code (e.g., CCTA, CBFA) for exact match.
For VW Golf GTI owners seeking a straightforward way to integrate a boost gauge without compromising manifold integrity, the GFB 5800 stands out as the practical pick. Add it to your cart today and experience the difference in boost accuracy and engine bay organization.
Gauge Components
Automotive gauge components are the hardware foundation that makes every aftermarket gauge installation work reliably, including sending units, fittings, tubing, wiring harnesses, electrical connectors, and mounting hardware that connects the gauge head to the sensor point on the vehicle. A gauge is only as accurate and reliable as its supporting components, and using quality sending units from brands like Autometer, VDO, and Speedhut ensures the electrical signal reaching the gauge accurately represents the actual oil pressure, coolant temperature, fuel level, or boost reading. Gauge components range from simple weld-in bung fittings for oil temperature probes to complete electrical harness kits that handle all the wiring for a multi-gauge cluster installation. Understanding the correct sender type and wiring configuration for your specific gauge brand is essential for accurate readings and long-term reliability. Popular Upgrades Autometer 1/8-inch NPT sending units for oil pressur...
View Gauge Components Products
Gauges & Pods
Performance gauges and gauge pods form a complete driver information system for any modified or performance vehicle, combining accurate instrument measurement with a mounting solution that keeps critical engine data visible without cluttering the interior. Gauge kits that bundle the gauge head with a compatible pod create a finished, coordinated installation that looks intentional rather than improvised. Whether monitoring boost on a turbocharged build, oil pressure on a high-revving naturally aspirated engine, or exhaust gas temperature on a diesel truck that tows near its limit, the combination of a quality gauge and a proper pod mount is the correct approach. Both A-pillar and dash pod solutions are available for the most popular domestic and import performance vehicles. Popular Upgrades Autometer Sport-Comp and Ultra-Lite gauge and pod bundles for the Mustang, Camaro, WRX/STI, and F-150 are the most popular combination purchases, providing a matched gauge and vehicle-specific A-...
View Gauges & Pods Products
Go Fast Bits
Go Fast Bits (GFB) is an Australian performance engineering company specializing in blow-off valves, bypass valves, and boost management components for turbocharged performance vehicles. The brand is particularly well-known for its TMS, T9H, and Respons adjustable blow-off valves that allow drivers to tune the valve's response characteristics between full atmosphere venting (traditional BOV sound) and full recirculation (OEM-style operation), giving owners control over both the performance and sound character of the boost control system. GFB components are manufactured to precision engineering tolerances and designed to outperform both stock bypass valves and lower-quality BOV alternatives, maintaining consistent boost pressure control at elevated boost levels where factory valves begin to leak. The catalog covers direct-fit applications for popular turbocharged platforms from Subaru WRX and STI to Volkswagen Golf R, Audi S3, and Ford Focus ST. Popular Upgrades The GFB TMS Respons b...
View Go Fast Bits Products
Interior Parts & Accessories
Enhance your driving experience with our extensive collection of Interior Parts & Accessories. Auto interior repair goes beyond aesthetics; it plays a crucial role in ensuring safety and comfort. Explore our variety of products designed to protect, organize, and personalize your vehicle's interior. Why Choose Our Interior Parts & Accessories? Durable Protection: Floor mats shield your car from dirt and mud, keeping it clean. Essential Safety Components: Gear shift knobs, ignition lock cylinders, and rearview mirrors are vital for safe driving. Affordable Upgrades: Car seat covers add comfort and style while protecting your upholstery. Featured Products Upgrade your car's interior effortlessly with our Car Seat Covers. They provide: Comfort and cushioning Stylish colors and patterns Pet-friendly options like bench seat covers Steering Wheel Covers & Floor Mats Customize your vehicle further with our Steering Wheel Covers and Floor Mats: Protect original upholste...
View Interior Parts & Accessories Products


